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  • moment.js work out time left

    - by user1503606
    I am trying to get my head around the moment.js library as it seems more stable than the jquery one and the jquery date one is output console errors. http://momentjs.com/docs/#/manipulating/ What i am trying to do is do a countdown to work out the time left from now. example i have var countDownTill = '2012-11-19 00:00:00 +0000'; document.write(moment(countDownTill).diff(moment(), 'months') + " months<br>"); document.write(moment(countDownTill).diff(moment(), 'weeks') + " weeks<br>"); document.write(moment(countDownTill).diff(moment(), 'days') + " days<br>"); which will output 0 months 1 weeks 4 days but its not working out overall its doing it individuals for each value (days,weeks,months) so if i up the date by say 12 months like below. var countDownTill = '2013-11-19 00:00:00 +0000'; document.write(moment(countDownTill).diff(moment(), 'months') + " months<br>"); document.write(moment(countDownTill).diff(moment(), 'weeks') + " weeks<br>"); document.write(moment(countDownTill).diff(moment(), 'days') + " days<br>"); it outputs. 12 months 53 weeks 369 days where as i am trying to get it to output 12 months 2 weeks 5 days example here http://jsfiddle.net/fDmWH/3/

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  • Help matching fields between two classes

    - by Michael
    I'm not too experienced with Java yet, and I'm hoping someone can steer me in the right direction because right now I feel like I'm just beating my head against a wall... The first class is called MeasuredParams, and it's got 40+ numeric fields (height, weight, waistSize, wristSize - some int, but mostly double). The second class is a statistical classifier called Classifier. It's been trained on a subset of the MeasuredParams fields. The names of the fields that the Classifier has been trained on is stored, in order, in an array called reqdFields. What I need to do is load a new array, toClassify, with the values stored in the fields from MeasuredParams that match the field list (including order) found in reqdFields. I can make any changes necessary to the MeasuredParams class, but I'm stuck with Classifier as it is. My brute-force approach was to get rid of the fields in MeasuredParams and use an arrayList instead, and store the field names in an Enum object to act as an index pointer. Then loop through the reqdFields list, one element at a time, and find the matching name in the Enum object to find the correct position in the arrayList. Load the value stored at that positon into toClassify, and then continue on to the next element in reqdFields. I'm not sure how exactly I would search through the Enum object - it would be a lot easier if the field names were stored in a second arrayList. But then the index positions between the two would have to stay matched, and I'm back to using an Enum. I think. I've been running around in circles all afternoon, and I keep thinking there must be an easier way of doing it. I'm just stuck right now and can't see past what I've started. Any help would be GREATLY appreciated. Thanks so much! Michael

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  • jeditable not working

    - by zurna
    I did not make any changes on the code. I dont receive any errors but its not working. I must be missing something very very simple here. Any suggestion appreciated... Test link. http://www.aslanyurek.com/inner.asp?Section=commentary&CommentaryID=1 $('.GameStory').editable('content/commentary/index.cs.asp?Process=EditLiveCommentary&CommentaryID=<%=Request.QueryString("CommentaryID")%>', { type : 'textarea', id : 'elementid', name : 'CommentaryDesc', cancel : 'Cancel', submit : 'OK', indicator : '<img src="img/indicator.gif">', tooltip : 'Click to edit...', cssclass : 'someclass' }); <div class="GameStory"> <p><span class="minute">36'</span>Here comes the pressure as Chelsea suddenly begin to up the tempo and Bolton can't keep the ball or clear it out of their own half.</p> <p><span class="minute">34'</span>Yuri Zhirkov, despite his head wound, is having a really good game and seems to be enjoying the freedom that he has been given to attack from his left back berth tonight.</p> <p><span class="minute">27'</span>Drogba whips in a free-kick that Jaaskelainen, for some reason, decides to punch straight into the face of Salomon Kalou who watches on as the ball rolls agonisingly of the post. Scare for Bolton.</p> <p><span class="minute">4'</span>Chelsea face Bolton at 8pm on Tuesday, April 13th.</p> <p><span class="minute">3'</span>Lively start at the Bridge with both sides looking to attack - it is by no means a defensive lineup from Owen Coyle so this could be an interesting game.</p> <p><span class="minute">0'</span>Nicolas Anelka gets the first shot of the match in on goal but its very tamely struck and Jaaskelainen gathers easily.</p> </div>

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  • DataBinding the AJAX Control Toolkit's Rating Control

    - by Nevada
    I'm attempting to use the AJAX Control Toolkit's Rating control in a DataBinding scenario. I have a ReuseRating column in my database that is a tinyint. It can hold values 1 through 5. Every record in the table has the value set to 1 currently. If I do this in my ItemTemplate everything works fine. I get 1 star filled in on my rating control. <act:Rating ID="ReuseRatingRating" runat="server" CurrentRating='<%# Convert.ToInt16(Eval("ReuseRating")) %>' MaxRating="5" StarCssClass="ratingStar" WaitingStarCssClass="savedRatingStar" FilledStarCssClass="filledRatingStar" EmptyStarCssClass="emptyRatingStar" /> Now I want to DataBind this in my EditTemplate like so. <act:Rating ID="ReuseRatingRating" runat="server" CurrentRating='<%# Convert.ToInt16(Bind("ReuseRating")) %>' MaxRating="5" StarCssClass="ratingStar" WaitingStarCssClass="savedRatingStar" FilledStarCssClass="filledRatingStar" EmptyStarCssClass="emptyRatingStar" /> Note, that I changed my Eval to a Bind in the CurrentRating property. This throws the following error. CS0103: The name 'Bind' does not exist in the current context Can anyone help me out on this one? I've been knocking my head against the wall for a couple of hours now.

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  • Best way to be able to pick multiple colors/designs of symbols dynamically from flash

    - by Cyprus106
    Sorry the title's so convoluted... I must've tried for ten minutes to get a good, descriptive title! Basically, here's the scenario. Let's say a user can pick fifty different hat colors and styles to put on an avatar. The avatar can move his head around, so we'd need the same types of movements in the symbol for when that happens. Additionally, it gets which hat should be on the 'avatar' from a database. The problem is that we can't just make 50 different frames with a different hat on each. And each hat symbol will have the same movements, it'll just be different styles, colors and sizes. So how can I make one variable that is the HAT, that way we can just put the appropriate hat symbol into the variable and always be able to call Hat.gotoAndplay('tip_hat') or any other generic functions.... Does that make sense? Hope that's not too confusing. Sorry, I'm not great at the visual Flash stuff, but it's gotta be done! Thanks!

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  • Ruby metaclass madness

    - by t6d
    I'm stuck. I'm trying to dynamically define a class method and I can't wrap my head around the ruby metaclass model. Consider the following class: class Example def self.meta; (class << self; self; end); end def self.class_instance; self; end end Example.class_instance.class # => Class Example.meta.class # => Class Example.class_instance == Example # => true Example.class_instance == Example.meta # => false Obviously both methods return an instance of Class. But these two instances are not the same. They also have different ancestors: Example.meta.ancestors # => [Class, Module, Object, Kernel] Example.class_instance.ancestors # => [Example, Object, Kernel] Whats the point in making a difference between the metaclass and the class instance? I figured out, that I can send :define_method to the metaclass to dynamically define a method, but if I try to send it to the class instance it won't work. At least I could solve my problem, but I still want to understand why it is working this way.

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  • how to solve the error in GWT ?

    - by megala
    I created one GWT project in eclipse.It contained the following codings Program 1:Creategroup package com.crimson.creategroup; import javax.persistence.Basic; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import com.google.appengine.api.datastore.Key; import com.google.appengine.api.users.User; @Entity(name="CreateGroup") public class Creategroup { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Key key; @Basic private User author; @Basic private String groupname; @Basic private String groupid; @Basic private String groupdesc; @Basic private String emailper; public Key getKey() { return key; } public void setAuthor(User author) { this.author = author; } public User getAuthor() { return author; } public void setGroupname(String groupname) { this.groupname = groupname; } public String getGroupname() { return groupname; } public void setGroupid(String groupid) { this.groupid = groupid; } public String getGroupid() { return groupid; } public void setGroupdesc(String groupdesc) { this.groupdesc = groupdesc; } public String getGroupdesc() { return groupdesc; } public void setEmailper(String emailper) { this.emailper = emailper; } public String getEmailper() { return emailper; } public Creategroup(String groupname,String groupid,String groupdesc ,String emailper) { this.groupname = groupname; this.groupid = groupid; this.groupdesc = groupdesc; this.emailper=emailper; } } Program 2:Creategroupservlet package com.crimson.creategroup; import java.io.IOException; import javax.persistence.EntityManager; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.google.appengine.api.users.User; import com.google.appengine.api.users.UserService; import com.google.appengine.api.users.UserServiceFactory; import java.util.logging.Logger; public class Creategroupservlet extends HttpServlet{ private static final long serialVersionUID = 1L; private static final Logger log = Logger.getLogger(Creategroupservlet.class.getName()); public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException { UserService userService = UserServiceFactory.getUserService(); User user = userService.getCurrentUser(); String groupname=req.getParameter("gname"); String groupid=req.getParameter("groupdesc"); String groupdesc=req.getParameter("gdesc"); String email=req.getParameter("eperm"); if (groupname == null) { System.out.println("Complete all the details"); } if (user != null) { log.info("Greeting posted by user " + user.getNickname() + "\n " + groupname+"\n" + groupid + "\n" + groupdesc + "\n" + email); final EntityManager em = EMF.get(); try { Creategroup group = new Creategroup(groupname,groupid,groupdesc,email); em.persist(group); } finally { em.close(); } } else { throw new IllegalArgumentException("anonymous posts not permitted!"); } resp.sendRedirect("/group.jsp"); } } Program 3:EMF package com.crimson.creategroup; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; public class EMF { private static final EntityManagerFactory emfInstance = Persistence.createEntityManagerFactory("transactions-optional"); private EMF() { } public static EntityManager get() { return emfInstance.createEntityManager(); } } Program 4:index.jsp <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ page import="com.google.appengine.api.users.User" %> <%@ page import="com.google.appengine.api.users.UserService" %> <%@ page import="com.google.appengine.api.users.UserServiceFactory" %> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link type="text/css" rel="stylesheet" href="Group.css"> <title>Add Group into DataStore</title> </head> <body> <div id="nav"> <% UserService userService = UserServiceFactory.getUserService(); User user = userService.getCurrentUser(); if (user != null) { response.sendRedirect("/group.jsp"); %> <% } else { %> <a href="<%= userService.createLoginURL(request.getRequestURI()) %>">Sign in</a> <% } %> </div> <h1>Create Group</h1> <table> <tr> <td colspan="2" style="font-weight:bold;"> This demo uses secured resources, so you need to be logged into your Gmail account.</td> </tr> </table> </body> </html> program 5:group.jsp <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ page import="java.util.List" %> <%@ page import="javax.persistence.EntityManager" %> <%@ page import="com.google.appengine.api.users.User" %> <%@ page import="com.google.appengine.api.users.UserService" %> <%@ page import="com.google.appengine.api.users.UserServiceFactory" %> <%@ page import="com.crimson.creategroup.Creategroup" %> <%@ page import="com.crimson.creategroup.EMF" %> <html> <body> <% UserService userService = UserServiceFactory.getUserService(); User user = userService.getCurrentUser(); if (user != null) { %> <p>Hello, <%= user.getNickname() %>! (You can <a href="<%= userService.createLogoutURL(request.getRequestURI()) %>">sign out</a>.)</p> <% } else { response.sendRedirect("/index.jsp"); } %> <% final EntityManager em = EMF.get(); try { String query = "select from " + Creategroup.class.getName(); List<Creategroup> groups = (List<Creategroup>) em.createQuery(query).getResultList(); if (groups.isEmpty()) { %> <p>This table not having any group</p> <% } else { for (Creategroup g : groups) { %> <p><b><%= g.getAuthor().getNickname() %></b> wrote:</p> <blockquote><%= g. getGroupname() %></blockquote> <blockquote><%= g. getGroupid() %></blockquote> <blockquote><%= g. getGroupdesc() %></blockquote> <blockquote><%= g. getEmailper() %></blockquote> <% } } } finally { em.close(); } %> <form action="/sign" method="post"> <input type="text" name="Groupname" size="25"> <input type="text" name="Groupid" size="25"> <input type="text" name="Groupdesc" size="250"> <input type="text" name="Emaildesc" size="25"> <div><input type="submit" value="CREATE GROUP" /></div> </form> </body> </html> Program 6:Web.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> <web-app> <!-- Servlets --> <servlet> <servlet-name>Creategroupservlet</servlet-name> <servlet-class>com.crimson.creategroup.Creategroupservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>Creategroupservlet</servlet-name> <url-pattern>sign in</url-pattern> </servlet-mapping> <!-- Default page to serve --> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app> Program 7:persistence.xml <?xml version="1.0" encoding="UTF-8" ?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="transactions-optional"> <provider>org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider</provider> <properties> <property name="datanucleus.NontransactionalRead" value="true"/> <property name="datanucleus.NontransactionalWrite" value="true"/> <property name="datanucleus.ConnectionURL" value="appengine"/> </properties> </persistence-unit> </persistence but is shows the following error Missing required argument 'module[s]' Google Web Toolkit 2.0.0 DevMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logdir directory] [-logLevel level] [-gen dir] [-codeServerPort port-number | "auto"] [-server servletContainerLauncher] [-startupUrl url] [-war dir] [-extra dir] [-workDir dir] module[s] How to solve this thanks in advance?

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  • Media Kind in iTunes COM for Windows SDK

    - by Joel Verhagen
    I recently found out about the awesomeness of the iTunes COM for Windows SDK. I am using Python with win32com to talk to my iTunes library. Needless to say, my head is in the process of exploding. This API rocks. I have one issue though, how do I access the Media Kind attribute of the track? I looked through the help file provided in the SDK and saw no sign of it. If you go into iTunes, you can modify the track's media kind. This way if you have an audiobook that is showing up in your music library, you can set the Media Kind to Audiobook and it will appear in the Books section in iTunes. Pretty nifty. The reason I ask is because I have a whole crap load of audiobooks that are showing up in my LibraryPlaylist. Here is my code thus far. import win32com.client iTunes = win32com.client.gencache.EnsureDispatch('iTunes.Application') track = win32com.client.CastTo(iTunes.LibraryPlaylist.Tracks.Item(1), 'IITFileOrCDTrack') print track.Artist, '-', track.Name print print 'Is this track an audiobook?' print 'How the hell should I know?' Thanks in advance.

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  • Synchronize DataGrid and DataForm in Silverlight 3

    - by SpiralGray
    I've been banging my head against the wall for a couple of days on this and it's time to ask for help. I've got a DataGrid and DataForm on the same UserControl. I'm using an MVVM approach so there is a single ViewModel for the UserControl. That ViewModel has a couple of properties that are relevant to this discussion: public ObservableCollection<VehicleViewModel> Vehicles { get; private set; } public VehicleViewModel SelectedVehicle { get { return selectedVehicle; } private set { selectedVehicle = value; OnPropertyChanged( "SelectedVehicle" ); } } In the XAML I've got the DataGrid and DataForm defined as follows: <data:DataGrid SelectionMode="Single" ItemsSource="{Binding Vehicles}" SelectedItem="{Binding SelectedVehicle, Mode=TwoWay}" AutoGenerateColumns="False" IsReadOnly="True"> <dataFormToolkit:DataForm CurrentItem="{Binding SelectedVehicle}" /> So as the SelectedItem changes on the DataGrid it should push that change back to the ViewModel and when the ViewModel raises the OnPropertyChanged the DataForm should refresh itself with the information for the newly-selected VehicleViewModel. However, the setter for SelectedVehicle is never being called and in the Output window of VS I'm seeing the following error: System.Windows.Data Error: ConvertBack cannot convert value 'xxxx.ViewModel.VehicleViewModel' (type 'xxxx.ViewModel.VehicleViewModel'). BindingExpression: Path='SelectedVehicle' DataItem='xxxx.ViewModel.MainViewModel' (HashCode=31664161); target element is 'System.Windows.Controls.DataGrid' (Name=''); target property is 'SelectedItem' (type 'System.Object').. System.MethodAccessException: xxxx.ViewModel.MainViewModel.set_SelectedVehicle(xxxx.ViewModel.VehicleViewModel) It sounds like it's having a problem converting from a VehicleViewModel to an object (or back again), but I'm confused as to why that would be (or even if I'm on the right track with that assumption). Each row/item in the DataGrid should be a VehicleViewModel (because the ItemsSource is bound to an ObservableCollection of that type), so when the SelectedItem changes it should be dealing with an instance of VehicleViewModel. Any insight would be appreciated.

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  • How do you unit test a method containing a LINQ expression?

    - by Phil.Wheeler
    I'm struggling to get my head around how to accommodate a mocked method that only accepts a Linq expression as its argument. Specifically, the repository I'm using has a First() method that looks like this: public T First(Expression<Func<T, bool>> expression) { return All().Where(expression).FirstOrDefault(); } The difficulty I'm encountering is with my MSpec tests, where I'm (probably incorrectly) trying to mock that call: public abstract class with_userprofile_repository { protected static Mock<IRepository<UserProfile>> repository; Establish context = () => { repository = new Mock<IRepository<UserProfile>>(); repository.Setup<UserProfile>(x => x.First(up => up.OpenID == @"http://testuser.myopenid.com")).Returns(GetDummyUser()); }; protected static UserProfile GetDummyUser() { UserProfile p = new UserProfile(); p.OpenID = @"http://testuser.myopenid.com"; p.FirstName = "Joe"; p.LastLogin = DateTime.Now.Date.AddDays(-7); p.LastName = "Bloggs"; p.Email = "[email protected]"; return p; } } I run into trouble because it's not enjoying the Linq expression: System.NotSupportedException: Expression up = (up.OpenID = "http://testuser.myopenid.com") is not supported. So how does one test these sorts of scenarios?

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  • How to enable and use HTTP PUT and DELETE with Apache2 and PHP?

    - by Andreas Jansson
    Hi, It should be so simple. I've followed every tutorial and forum I could find, yet I can't get it to work. I simply want to build a RESTful API in PHP on Apache2. In my VirtualHost directive I say: <Directory /> AllowOverride All <Limit GET HEAD POST PUT DELETE OPTIONS> Order Allow,Deny Allow from all </Limit> </Directory> Yet every PUT request I make to the server, I get 405 method not supported. Someone advocated using the Script directive, but since I use mod_php, as opposed to CGI, I don't see why that would work. People mention using WebDAV, but to me that seems like overkill. After all, I don't need DAV locking, a DAV filesystem, etc. All I want to do is pass the request on to a PHP script and handle everything myself. I only want to enable PUT and DELETE for the clean semantics. Thanks, Andreas

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  • YUI: ensuring DOM elements and scripts are ready

    - by dound
    If I put my inline script after the DOM elements it interacts with, should I still use YUI 3's domready event? I haven't noticed any problems, and it seems like I can count on the browser loading the page sequentially. (I already use YUI().use('node', ... to make sure the YUI functions I need have been loaded since the YUI script is a separate file.) Is there a way to speed up the loading of widgets like YUI 2's calendar? I load the appropriate script in <head> element of my page. I use YUI().use('yui2-calendar', ... to make sure the Calendar widget is available. Unfortunately, this causes a short but noticeable delay when I load my page with the calendar. If I omit the YUI().use('yui2-calendar', ... code then it shows up without a noticeable delay - but I guess this could cause the Calendar to not show up at all if the YUI script doesn't load in time? With regards to #2, is it possible to reduce the visual artifact of the calendar not being present and then showing up? I've made it slightly better by specifying a height and width for the parent div so that at least the space is already allocated = minimal shifting around when it does load.

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  • Why is Available Physical Memory (dwAvailPhys) > Available Virtual Memory (dwAvailVirtual) in call G

    - by Andrew
    I am playing with an MSDN sample to do memory stress testing (see: http://msdn.microsoft.com/en-us/magazine/cc163613.aspx) and an extension of that tool that specifically eats physical memory (see http://www.donationcoder.com/Forums/bb/index.php?topic=14895.0;prev_next=next). I am obviously confused though on the differences between Virtual and Physical Memory. I thought each process has 2 GB of virtual memory (although I also read 1.5 GB because of "overhead". My understanding was that some/all/none of this virtual memory could be physical memory, and the amount of physical memory used by a process could change over time (memory could be swapped out to disc, etc.)I further thought that, in general, when you allocate memory, the operating system could use physical memory or virtual memory. From this, I conclude that dwAvailVirtual should always be equal to or greater than dwAvailPhys in the call GlobalMemoryStatus. However, I often (always?) see the opposite. What am I missing. I apologize in advance if my question is not well formed. I'm still trying to get my head around the whole memory management system in Windows. Tutorials/Explanations/Book recs are most welcome! Andrew

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  • Need advice on OOP philosophy

    - by David Jenings
    I'm trying to get the wheels turning on a large project in C#. My previous experience is in Delphi, where by default every form was created at applicaton startup and form references where held in (gasp) global variables. So I'm trying to adapt my thinking to a 100% object oriented environment, and my head is spinning just a little. My app will have a large collection of classes Most of these classes will only really need one instance. So I was thinking: static classes. I'm not really sure why, but much of what I've read here says that if my class is going to hold a state, which I take to mean any property values at all, I should use a singleton structure instead. Okay. But there are people out there who for reasons that escape me, think that singletons are evil too. None of these classes is in danger of being used anywhere except in this program. So they could certainly work fine as regular objects (vs singletons or static classes) Then there's the issue of interaction between objects. I'm tempted to create a Global class full of public static properties referencing the single instances of many of these classes. I've also considered just making them properties (static or instance, not sure which) of the MainForm. Then I'd have each of my classes be aware of the MainForm as Owner. Then the various objects could refer to each other as Owner.Object1, Owner.Object2, etc. I fear I'm running out of electronic ink, or at least taxing the patience of anyone kind enough to have stuck with me this long. I hope I have clearly explained my state of utter confusion. I'm just looking for some advice on best practices in my situation. All input is welcome and appreciated. Thanks in advance, David Jennings

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  • Image "moves" when varying heightForRowAtIndexPath in UITableViewCell.

    - by Kalle
    I have a table view with varying height, as defined in the heightForRowAtIndexPath. For some very odd reason, the image is "indented" to the right based on the height; if the height is low enough, the image is stuck to the left side of the cell, but as the height increases, the image for said cell is shifted rightward compared to other rows. The result of this is a very poor looking list, with images floppily laid out in a zig-zag pattern depending on the height of each individual row. The problem is revealed by this simple example: - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return (indexPath.row+1) * 50; } Each cell is set up (simplified) as a "Subtitle" style cell with: // ... cell.textLabel.text = @"foo"; cell.detailTextLabel.text = @"bar"; cell.imageView.backgroundColor = [UIColor redColor]; // for debugging; i have images with transparent bg cell.imageView.image = anImageThatIs55x50pixelsBig; return cell; Any ideas? My head bleeds from the wall-love-affair. Edit: uploaded a screen which displays this. The "image" is just a screenshot of a tiny area of the screen which makes it look a little weird, but you get the picture I'm sure: http://img28.imageshack.us/img28/549/screenshot20100311at172.png

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  • Deriving an HTMLElement Object from jQuery Object

    - by Jasconius
    I'm doing a fairly exhaustive series of DOM manipulations where a few elements (specifically form elements) have some events. I am dynamically creating (actually cloning from a source element) several boxes and assigning a change() event to them. The change event executes, and within the context of the event, "this" is the HTML Element Object. What I need to do at this point however is determine a contact for this HTML Element Object. I have these objects stored already as jQuery entities in assorted arrays, but obviously [HTMLElement Object] != [Object Object] And the trick is that I cannot cast $(this) and make a valid comparison since that would create a new object and the pointer would be different. So... I've been banging my head against this for a while. In the past I've been able to circumvent this problem by doing an innerHTML comparison, but in this case the objects I am comparing are 100% identical, just there's lots of them. Therefore I need a solid comparison. This would be easy if I could somehow derive the HTMLElement object from my originating jQuery object. Thoughts, other ideas? Help. :(

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  • Virtual Lan on the Cloud -- Help Confirm my understanding?

    - by marfarma
    [Note: Tried to post this over at ServerFault, but I don't have enough 'points' for more than one link. Powers that be, move this question over there.] Please give this a quick read and let me know if I'm missing something before I start trying to make this work. I'm not a systems admin professional, and I'd hate to end up banging my head into the wall if I can avoid it. Goals: Create a 'road-warrior' capable star shaped virtual LAN for consultants who spend the majority of their time on client sites, and who's firm has no physical network or servers. Enable CIFS access to a cloud-server based installation of Alfresco Allow Eventual implementation of some form of single-sign-on ( OpenLDAP server ) access to Alfresco and other server applications implemented in the future Given: All Servers will live in the public internet cloud (Rackspace Cloud Servers) OpenVPN Server will be a Linux disto, probably Ubuntu 9.x, installed on same server as Alfresco (at least to start) Staff will access server applications and resources from client sites, hotels, trains, planes, coffee shops or their homes over various ISP, using their company laptops or personal home desktops. Based on my Research thus far, to accomplish this, I'll need: OpenVPN with Bridging Enabled to create a star shaped "virtual" LAN http://openvpn.net/index.php/open-source/documentation/miscellaneous/76-ethernet-bridging.html A Road Warrior Network Configuration, as described in this Shorewall article (lower down the page) http://www.shorewall.net/OPENVPN.html Configure bridge addressesing (probably DHCP) http://openvpn.net/index.php/open-source/faq.html#bridge-addressing Configure CIFS / Samba to accept VPN IP address http://serverfault.com/questions/137933/howto-access-samba-share-over-vpn-tunnel Set up Client software, with keys configured for access (potentially through a OpenVPN-Sa client portal) http://www.openvpn.net/index.php/access-server/download-openvpn-as/221-installation-overview.html

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  • Limit foreign key choices in select in an inline form in admin

    - by mightyhal
    Edited :-) Hopefully a bit clearer now. The logic is of the model is: A Building has many Rooms A Room may be inside another Room (a closet, for instance--ForeignKey on 'self') A Room can only in inside of another Room in the same building (this is the tricky part) Here's the code I have: #spaces/models.py from django.db import models class Building(models.Model): name=models.CharField(max_length=32) def __unicode__(self): return self.name class Room(models.Model): number=models.CharField(max_length=8) building=models.ForeignKey(Building) inside_room=models.ForeignKey('self',blank=True,null=True) def __unicode__(self): return self.number and: #spaces/admin.py from ex.spaces.models import Building, Room from django.contrib import admin class RoomAdmin(admin.ModelAdmin): pass class RoomInline(admin.TabularInline): model = Room extra = 2 class BuildingAdmin(admin.ModelAdmin): inlines=[RoomInline] admin.site.register(Building, BuildingAdmin) admin.site.register(Room) The inline will display only rooms in the current building (which is what I want). The problem, though, is that for the inside_room drop down, it displays all of the rooms in the Rooms table (including those in other buildings). In the inline of rooms, I need to limit the inside_room choices to only rooms which are in the current building being displayed by the main form. I can't figure out a way to do it with either a limit_choices_to in the model, nor can I figure out how exactly to override the admin's inline formset properly (I feel like I should be somehow create a custom inline form, pass the building_id of the main form to the custom inline, then limit the queryset for the field's choices based on that--but I just can't wrap my head around how to do it). Maybe this is too complex for the admin site, but it seems like something that would be generally useful... Thanks again for your help!

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  • H.264 / FLV best practices for HTML

    - by Steve Murch
    I run a website with about 700 videos (And no, it's not porn -- get your mind out of the gutter :-) ). The videos are currently in FLV format. We use the JWPlayer to render those videos. IIS6 hosted. Everything works just fine. As I understand it, H.264 (not FLV and likely not OGG) is the emerging preferred HTML5 video standard. Today, the iPad really only respects H.264 or YouTube. Presumably, soon many more important browsers will follow Apple's lead and respect only the HTML5 tag. OK, so I think I can figure out how to convert my existing videos into the proper H.264 format. There are various tools available, including ffmpeg.exe. I haven't tried it yet, but I don't think that's going to be a problem after fiddling with the codec settings. My question is more about the container itself -- that is, planning graceful transition for all users. What's the best-practice recommendation for rendering these videos? If I just use the HTML5 tag, then presumably any browser that doesn't yet support HTML5 won't see the videos. And if I render them in Flash format via the JWPlayer or some other player, then they won't be playable on the iPad. Do I have to do ugly UserAgent detection here to figure out what to render? I know the JWPlayer supports H.264 media, but isn't the player itself a Flash component and therefore not playable on the iPad? Sorry if I'm not being clear, but I'm scratching my head on a graceful transition plan that will work for current browsers, the iPad and the upcoming HTML5 wave. I'm not a video expert, so any advice would be most welcome, thanks.

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  • PHP, jQuery and Ajax Object Orientation

    - by pastylegs
    I'm a fairly experienced programmer getting my head around PHP and Ajax for the first time, and I'm having a bit of trouble figuring out how to incorperate object oriented PHP into my ajax webapp. I have an admin page (admin.php) that will load and write information (info.xml) from an XML file depending on the users selection of a form on the admin page. I have decided to use an object (ContentManager.php) to manage the loading and writing of the XML file to disk, i.e : class ContentManager{ var $xml_attribute_1 ... function __construct(){ //load the xml file from disk and save its contents into variables $xml_attribute = simplexml_load_file(/path/to/xml) } function get_xml_contents(){ return xml_attribute; } function write_xml($contents_{ } function print_xml(){ } } I create the ContentManager object in admin.php like so <?php include '../includes/CompetitionManager.php'; $cm = new CompetitionManager() ?> <script> ...all my jquery </script> <html> ... all my form elements </html> So now I want to use AJAX to allow the user to retrieve information from the XML file via the ContentManger app using an interface (ajax_handler.php) like so <?php if(_POST[]=="get_a"){ }else if() } ... ?> I understand how this would work if I wasn't using objects, i.e. the hander php file would do a certain action depending on a variable in the .post request, but with my setup, I can't see how I can get a reference to the ContentManager object I have created in admin.php in the ajax_handler.php file? Maybe my understanding of php object scope is flawed. Anyway, if anyone can make sense of what I'm trying to do, I would appreciate some help!

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  • Does anyone else get worn out using Scrum, finishing sprint after sprint?

    - by Simucal
    I'm with a pretty small startup and we started using a form of a Scrum/Agile development cycle. In many ways I enjoy Scrum. We have relatively short sprints (2 weeks) and I like the Burndown Chart to track the teams progress. I also like the Feature Board so I always know what I should be doing next. It feels good taking down a feature's card from the board, completing it and then putting it in the burn down pile. However, we are now entering in our 18th Sprint release cycle and I'm starting to feel a little burnt out. It isn't that I don't like job or my co-workers, it is just that these sprints are... well, sprints. From start to finish I literally feel like I'm racing against the clock to maintain our development velocity. When we are done with the sprint we spend one day planning the next sprints feature set and estimates and then off we go again. For people who work in a mature Agile/Scrum development process, is this normal? Or are we missing something? Is there normally time in a Scrum enviornment that is unassigned/untracked to get done some minor things and to clear your head?

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  • Help! I've learned jQuery... now I want to learn JavaScript

    - by Derek Adair
    I am a self-taught web developer/programmer. I started out about two years ago by learning how to make simple dynamic websites with HTML/CSS/PHP. Then I started dabbling with animation... Enter jQuery I've become quite proficient with jQuery over the last year and I've even started making my own plugins. I've spent most of my effort learning how to beautify websites with fancy effects and what not. Upon tackling my first full-blown application, I realized how under-developed my knowledge of JavaScript actually is. jQuery has allowed me to rely on its framework so heavily that I rarely use any interesting functions, techniques, or whatever that are 'native' to the JavaScript language. For example: I have a basic understanding of what a closure is... but I am unsure where this technique can actually benefit me. Although as I understand it, that's what my jQuery plugins do with (function ($){//plugin code here})(jQuery). I've seen many posts/blogs/whatever about memory leaks and circular references which is concerning. I'm frustrated because I can wrap my head around the basic concepts of what these are just by reading the articles, but I'm finding that the deeper I go the more I don't understand. The vocabulary alone is burdensome. Let alone how to actually use these techniques/functions/language features. I am trying to figure out what I don't know I'm looking to gather any advice, techniques, articles, books, videos, snippets, examples, potential pitfalls... really anything you have regarding application development with JavaScript/jQuery.

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  • Objective-C memory model

    - by TofuBeer
    I am attempting to wrap my head around one part of the Objective-C memory model (specifically on the iPhone, so no GC). My background is C/C++/Java, and I am having an issue with the following bit of code (also wondering if I am doing this in an "Objective-C way" or not): - (NSSet *) retrieve { NSMutableSet *set; set = [NSMutableSet new]; // would normally fill the set in here with some data return ([set autorelease]); } - (void) test { NSSet *setA; NSSet *setB; setA = [self retrieve]; setB = [[self retrieve] retain]; [setA release]; [setB release]; } start EDIT Based on comments below, the updated retrieve method: - (NSSet *) retrieve { NSMutableSet *set; set = [[[NSMutableSet alloc] initWithCapacity:100] autorelease]; // would normally fill the set in here with some data return (set); } end EDIT The above code gives a warning for [setA release] "Incorrect decrement of the reference count of an object is not owned at this point by the caller". I though that the "new" set the reference count to 1. Then the "retain" call would add 1, and the "release" call would drop it by 1. Given that wouldn't setA have a reference count of 0 at the end and setB have a reference count of 1 at the end? From what I have figured out by trial and error, setB is correct, and there is no memory leak, but I'd like to understand why that is the case (what is wrong with my understanding of "new", "autorelease", "retain", and "release").

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  • How to explain to someone that a data structure should not draw itself, explaining separation of con

    - by leeand00
    I have another programmer who I'm trying to explain why it is that a UI component should not also be a data-structure. For instance say that you get a data-structure that contains a record-set from the "database", and you wish to display that record-set in a UI component within your application. According to this programmer (who will remain nameless, he's young and I'm teaching him...), we should subclass the data-structure into a class that will draw the UI component within our application!!!!!! And thus according to this logic, the record-set should manage the drawing of the UI. **Head Desk*** I know that asking a record-set to draw itself is wrong, because, if you wish to render the same data-structure on more than one type of component on your UI, you are going to have a real mess on your hands; you'll need to extend yet another class for each and every UI component that you render from the base-class of your record-set; I am well aware of the "cleanliness" of the of the MVC pattern (and by that what I really mean is you don't confuse your data (the Model) with your UI (the view) or the actions that take place on the data (the Controller more or less...okay not really the API should really handle that...and the Controller should just make as few calls to it as it can, telling it which view to render)) But it's certainly alot cleaner than using data-structures to render UI components! Is there any other advice I could send his way other than the example above? I understand that when you first learn OOP you go through "a stage" where you where just want to extend everything. Followed by a stage when you think that Design Patterns are the solution every single problem...which isn't entirely correct either...thanks Jeff. Is there a way that I can gently nudge this kid in the right direction? Do you have any more examples that might help explain my point to him?

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  • What strategy do you use to sync your code when working from home

    - by Ben Daniel
    At my work I currently have my development environment inside a Virtual Machine. When I need to do work from home I copy my VM and any databases I need onto a laptop drive sized external USB drive. After about 10 minutes of copying I put the drive in my pocket and head home, copy back the VM and databases onto my personal computer and I'm ready to work. I follow the same steps to take the work back with me. So if I count the total amount of time I spend waiting around for files to finish copying in order for me to take work home and bring it back again, it comes to around 40 minutes! I do have a VPN connection to my work from home (providing the internet is up at both sites) and a decent internet speed (8mbits down/?up) but I find Remote Desktoping into my work machine laggy enough for me to want to work on my VM directly. So in looking at what other options I have or how I could improve my existing option I'm interested in what strategy you use or recommend to do work at home and keeping your code/environment in sync. EDIT: I'd prefer an option where I don't have to commit my changes into version control before I leave work - as I like to make meaningful descriptive comments in my commits, committing would take longer than just copying my VM onto a portable drive! lol Also I'd prefer a solution where my dev environment stays in sync too. Having said that I'm still very interested in your own solutions even if they don't exactly solve my problem as best as I'd like. :)

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