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Articles indexed Sunday May 23 2010

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  • How do I insert an input's value into a separate form?

    - by ryan
    I'm making a tool for my university that allows students to create a list of classes by doing the following: Searching by course title for their course via an autocomplete input field. Adding that course to a separate form that upon being submitted creates a course list. I am trying to link the autocomplete and the course list form with an 'add to course list' button that inserts a hidden input field into the course list form which can subsequently be submitted by a 'create course list' button. My question is this: How do I take the value of the autocomplete input and insert it into the course list form without using AJAX? So far I have something like the following: <%= text_field_with_auto_complete :course, :title, :size => 40 %> <%= link_to_function "Add to Course List" do |page| page.insert_html :top, :course_list, hidden_field(:courses, :course, {:value => "$('course_title').value"}) %> <% form_for(@course_list) do |f|%> <div id="course_list">Insert selected courses here.</div> <% end %>

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  • PHP: Detect encoding and make everything UTF-8

    - by marco92w
    Hello! I'm reading out lots of texts from various RSS feeds and inserting them into my database. Of course, there are several different character encodings used in the feeds, e.g. UTF-8 and ISO-8859-1. Unfortunately, there are sometimes problems with the encodings of the texts. Example: 1) The "ß" in "Fußball" should look like this in my database: "Ÿ". If it is a "Ÿ", it is displayed correctly. 2) Sometimes, the "ß" in "Fußball" looks like this in my database: "ß". Then it is displayed wrongly, of course. 3) In other cases, the "ß" is saved as a "ß" - so without any change. Then it is also displayed wrongly. What can I do to avoid the cases 2 and 3? How can I make everything the same encoding, preferably UTF-8? When must I use utf8_encode(), when must I use utf8_decode() (it's clear what the effect is but when must I use the functions?) and when must I do nothing with the input? Can you help me and tell me how to make everything the same encoding? Perhaps with the function mb-detect-encoding()? Can I write a function for this? So my problems are: 1) How to find out what encoding the text uses 2) How to convert it to UTF-8 - whatever the old encoding is Thanks in advance! EDIT: Would a function like this work? function correct_encoding($text) { $current_encoding = mb_detect_encoding($text, 'auto'); $text = iconv($current_encoding, 'UTF-8', $text); return $text; } I've tested it but it doesn't work. What's wrong with it?

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  • I want to use OpenVPN to access the web and email from China. How?

    - by gaoshan88
    My question: How do I use my already existing OpenVPN setup to enable secure, remote web surfing and email checking from open wireless hotspots? Some long winded details: I am running Ubuntu and have OpenVPN up and working fine as a server. My client machine connects fine as well. However, that just gets me a secure connection to my home network. What I want is to be able to access my VPN server and surf the web or check email securely from anywhere with an open wireless connection. I am frequently in China and having secure, unblocked access would be a boon (especially since I like to work from tea houses and coffee shops and I've already had a password sniffed and hacked once). I already know how to tunnel over SSH via a SOCKS proxy using something like: ssh -ND 8887 -p 22 [email protected] but since I have OpenVPN I figure why not try it? So... what are the steps involved in making it so I can connect to my VPN and the surf and check mail to my hearts content (slowly to be sure but at least it wold be secure). Thx!

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  • New PC, Keyboard and OS and I can't do a Screen Image Capture

    - by Chadworthington
    I just got a new PC, Windows 7 Ultimate with a: fancy MS keyboard. I am puzzled why ALT+PRTSCN keyboard combo seems to put nothing on my keyboard. No lights are on the keybd (SCROLL LOCK, SHIFT, etc)-yet, when I paste into Word Pad or Paint or some program that should be able to hande images, no image is on the clipboard. Any idea what to try? This is embarrassing...

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  • handling large number

    - by klw
    Hello, this is actually an problem question from project euler site http://projecteuler.net/index.php?section=problems&id=3 Anyway I'm not out after the solution, but I probably guess you will know what my approach is. To my question now, how do I handle numbers exceeding unsigned int? Is there a mathematical approach for this, if so where can I read about it?

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  • AuthLogic - how to determine current user id throughout the system?

    - by sscirrus
    Hi all, I have set up AuthLogic almost exactly as per the AuthLogic example app at http://github.com/binarylogic/authlogic_example. After someone logs in as User, they can click on links that send them away into the system and away from the users controller. This is an incredibly noob question, but how can I access that User's ID and other attributes from anywhere else, such as an unrelated view or unrelated controller? An example of what I'd like to do: #matchings controller @matching = Matching.find_by_user_id(user.id)

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  • Anything wrong with this MySQL quert? takes 10 seconds+ to load

    - by user345426
    I have a search that is taking 10 seconds+ to execute! Keep in mind it is also searching over 200,000 products in the database. I posted the explain and MySQL query here. 1 SIMPLE p ref PRIMARY,products_status,prod_prodid_status,product... products_status 1 const 9048 Using where; Using temporary; Using filesort 1 SIMPLE v ref PRIMARY,vendors_id,vendors_vendorid vendors_vendorid 4 rhinomar_rhinomartnew.p.vendors_id 1 1 SIMPLE s ref products_id products_id 4 rhinomar_rhinomartnew.p.products_id 1 1 SIMPLE pd ref PRIMARY,products,prod_desc_prodid_prodname prod_desc_prodid_prodname 4 rhinomar_rhinomartnew.p.products_id 1 1 SIMPLE p2c ref PRIMARY,ptc_catidx PRIMARY 4 rhinomar_rhinomartnew.p.products_id 1 Using where; Using index 1 SIMPLE c eq_ref PRIMARY PRIMARY 4 rhinomar_rhinomartnew.p2c.categories_id 1 Using where MySQL Query: select p.products_id, p.products_image, p.products_price, p.products_weight, p.products_unit_quantity, s.specials_new_products_price, s.status, pd.products_name, pd.products_img_alt from products p left join vendors v ON v.vendors_id = p.vendors_id left join specials s on s.products_id = p.products_id left join products_description pd on pd.products_id = p.products_id left join products_to_categories p2c on p2c.products_id = p.products_id left join categories c on c.categories_id = p2c.categories_id where ( ( pd.products_name like '%apparel%' ) or p2c.categories_id IN (773, 132, 135, 136, 119, 122, 124, 125, 126, 1749, 1753, 1747, 123, 127, 130, 131, 178, 137, 140, 164, 165, 166, 167, 168, 169, 832, 2045 ) or p.products_id = 'apparel' or p.products_model = 'apparel' or CONCAT(v.vendors_prefix, '-') = 'apparel' or CONCAT( v.vendors_prefix, '-', p.products_id ) = 'apparel' ) and p.products_status = '1' and c.categories_status = '1' group by p.products_id order by pd.products_name

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  • In Ruby on Rails, why will story.votes return an empty Array object, but story.votes.create will act

    - by Jian Lin
    In Ruby on Rails, say a Story object can "has_many" Vote objects (a story is voted "hot" by many users). So when we do a s = Story.find(:first) s is a Story object, and say s.votes returns [] and s.votes.class returns Array So clearly, s.votes is an empty Array object. At this time, when s.votes.create is called, it actually invokes a method of the Vote class? How come an Array class object can invoke a Vote class method?

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  • JQUERY Ajax form, page refreshs & isn't supposed to in Safari, doesn't refresh in FF (works fine)

    - by nobosh
    I'm working on a AJAX form which lives in a JQUERY UI Dialog. It works great in FireFox, but for some reason, in safari it refreshes the page to: /? Please let me know if somethings wrong here? Thanks <div class="modal-container"> <form onsubmit="" action="" id="list-dialog-form" name="list-dialog-form"> <div id="modal-wrapper"> <br><br> <div class="modal-inputbar"> <span style="width: 100px;" class="inputbar-label"> <label>Edit List Name:</label> </span> <span style="width: 200px;" class="inputbar-input"> <input type="text" style="padding-right: 25px;" autocomplete="off" maxlength="140" id="listname" value="Untitled"> </span> </div> </div> <div id="modal-submit" class="modal-submit"> <span class="left delete-wrap"> <span onclick="deleteThisList(15);" class="delete"> </span> </span> <span style="line-height: 2em;" class="right"> <input type="hidden" value="15" id="tasklistID"> <input type="submit" value="update" id="dialogcloser"> <input type="button" onclick="$('#listeditdialog').dialog('close');" value="close" id="dialogcloser"> </span> </div> </form> </div> // Handles Updating the List Title $("#list-dialog-form").submit(function(){ // Ajax Spinner $("#listname").css("background", "url('/images/ajax-loader.gif') no-repeat scroll 98% center #FFF"); $.ajax({ url: '/ajax/listname-update/index.cfm', data: ({listname: $("#listname").val().trim(), tasklistID: $("#tasklistID").val()}), dataType: 'json', type: 'post', success: function( result ) { // Update the name in the top, project list $("#list-" + $("#tasklistID").val()).find('a').html($("#listname").val().trim()); $("#list-" + $("#tasklistID").val()).effect('highlight', {color: '#BDC1C7'}, 500); //Remove the Ajax Spinner $("#listname").css("background", "#FFF"); $("#listname").effect('highlight', {color: '#BDC1C7'}, 500); //close the dialog $('#listeditdialog').dialog('close'); } }); return false; });

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  • Best practice to pass a value from pop over control on iPad.

    - by Tattat
    It is an iPad app based on SDK 3.2. I have a MainUIView, that is subclass from UIView, it have a UIButton and a UILabel. When user press the UIButton, the pop over control will be appeared with a table view. When the user select a cell from the table view, the UILabel changes content base on the user click, and the pop up table view will disappear. The question is, how can I pass the "selected cell" to the UILabel. I am thinking making a "middle man" object. When the user click the UIButton, and the "middle man" will pass to the table. When the cell is selected, the "middle man" will store the idx, and call the UILabel change content from the value of "middle man". But I think it is pretty complex to implement, is there any easier way to implement it? thz u.

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  • TFS Changeset history using QueryHistory after branch rename

    - by bryantb
    I'm using the VersionControlServer.QueryHistory method to retrieve a list of files that have changed during a timespan that ranges from 5/1/2009 to 10/1/2009. My results unexpectedly only included items that had changed after 9/1/2009. I then realized that the path that I was using, $/Project/Reports/Main, didn't exist until 9/1/2009. Before 9/1/2009, there had been another node named $/Project/Main/Reports, which was renamed to $/Project/Reports/Main. When I query from Source Control Explorer I can see the entire history (5/1/2009 - 10/1/2009) that I expect to see. However, I can't get the same results via the API. I've tried to specify the branch that no longer exists because it was renamed, but not surprisingly I get zero results. Any ideas?

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  • What should I do that GWT use <th> instead of <td>?

    - by Paulus
    To build a HTML table I use direct DOM instead of a predefined Widget to set thead and tbody. But when I insert a cell with the insertCell() method GWT inserts an td element but should insert an th element. So TableElement table = Document.get().createTableElement(); TableSectionElement thead = table.createTHead(); TableRowElement headRow = thead.insertRow(-1); headRow.insertCell(-1).setInnerText( "header1" ); gives table/thead/tr/td but should give table/thead/tr/th Any idea how to solve this problem? Use the "old-school" DOM.createXXX()-Methods?

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  • PHP Tag Cloud System

    - by deniz
    Hi, I am implementing a tag cloud system based on this recommendation. (However, I am not using foreign keys) I am allowing up to 25 tags. My question is, how can I handle editing on the items? I have this item adding/editing page: Title: Description: Tags: (example data) computer, book, web, design If someone edits an item details, do I need to delete all the tags from Item2Tag table first, then add the new elements? For instance, someone changed the data to this: Tags: (example data) computer, book, web, newspaper Do I need to delete all the tags from Item2Tag table, and then add these elements? It seems inefficient, but I could find a more efficient way. The other problem is with this way is, if someone edits description but does not change the tags box, I still need to delete all the elements from Item2Tag table and add the same element. I am not an experienced PHP coder, so could you suggest a better way to handle this? (pure PHP/MySQL solution is preferable) Thanks in advance,

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  • Sharepoint navigation customization

    - by ifunky
    Hi, I've just started to use Sharepoint 2007, MOSS is installed but for the extranet I'm working on the publishing isn't switched on. What I need to do is customise the global navigation so that it displays all top level & subsite links, custom links and format it nicely with css for the brand. Sounds easy but it isn't for some reason! I've been reading numerous blogs and things about it but can't seem to find anything other than writing lots of code (which I don't mind) to hook into the API or use a customer provider which sounds extreme for something so simple. I was wondering what are the options for this and any good links to articles appreciated so I can finally get this simeple task done. I see the MOSS navigation has extra options for global navigation but I presume as this isn't enabled I couldn't use the same code/control in the master page? Thanks Dan

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  • Flash of a Bullet in the top left corner of the search results

    - by joneswah
    I am using a UISearchDisplayController and SearchBar initialised from a nib. when the search is being run I get a flash of a small circle what looks like a "bullet" in the top left corner of the search results. [See attached screenshot] It occurs in the simulator and on the device sporadically I have looked through my nib and I am not adding any stray views and was wondering if anyone else had this issue or knows how to get rid of it? thanks @interface SearchTabViewController : UITableViewController

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  • session fixation

    - by markiv
    Hi All, I am new to web development, and trying to get a hold on security issues. I went through this article on http://guides.rubyonrails.org/security.html these are some of the steps the author has mentioned how an attacker fixes session. 1. The attacker creates a valid session id: He loads the login page of the web application where he wants to fix the session, and takes the session id in the cookie from the response (see number 1 and 2 in the image). 2. He possibly maintains the session. Expiring sessions, for example every 20 minutes, greatly reduces the time-frame for attack. Therefore he accesses the web application from time to time in order to keep the session alive. 3. Now the attacker will force the user’s browser into using this session id (see number 3 in the image). As you may not change a cookie of another domain (because of the same origin policy), the attacker has to run a JavaScript from the domain of the target web application. Injecting the JavaScript code into the application by XSS accomplishes this attack. Here is an example: <script>?document.cookie="_session_id=16d5b78abb28e3d6206b60f22a03c8d9";?</script>. Read more about XSS and injection later on. 4. The attacker lures the victim to the infected page with the JavaScript code. By viewing the page, the victim’s browser will change the session id to the trap session id. 5. As the new trap session is unused, the web application will require the user to authenticate. 6. From now on, the victim and the attacker will co-use the web application with the same session: The session became valid and the victim didn’t notice the attack. I dont understand couple of points. i) why is user made to login in step5, since session is sent through. ii) I saw possible solutions on wiki, like user properties check and others why cant we just reset the session for the user whoever is login in when they enter username and password in step5? Thanks in advance Markiv

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  • Efficiency of purely functional programming

    - by Sid
    Does anyone know what is the worst possible asymptotic slowdown that can happen when programming purely functionally as opposed to imperatively (i.e. allowing side-effects)? Clarification from comment by itowlson: is there any problem for which the best known non-destructive algorithm is asymptotically worse than the best known destructive algorithm, and if so by how much?

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  • best php config / ini class?

    - by Bala Clark
    Hi, I'm looking for an alternave to the parse_ini_file() function in php. I want a simple way to store config settings, but want the flexibility to store unlimited levels of multiple arrays, special characters, etc. Any ideas?

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  • How to tell if you touched a CCLabel? (Cocos2d Question)

    - by RexOnRoids
    How to tell if you touched a CCLabel? The following code obviously does not work well enough because it only tests for point equality. Naturally touch point will not necessarily be equal to the position property of the CCLabel (CCNode). How to I tell if a Touch point has fallen within the "rectangle?" of the CCLabel? - (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { for( UITouch *touch in touches ) { CGPoint location = [touch locationInView: [touch view]]; location = [[CCDirector sharedDirector] convertToGL:location]; self.myGraphManager.isSliding = NO; if(CGPointEqualToPoint(location, label1.position)){ NSLog(@"Label 1 Touched"); }else if(CGPointEqualToPoint(location, label2.position)){ NSLog(@"Label 2 Touched"); }else if(CGPointEqualToPoint(location, label3.position)){ NSLog(@"Label 3 Touched"); }else if(CGPointEqualToPoint(location, label4.position)){ NSLog(@"Label 4 Touched"); }else if(CGPointEqualToPoint(location, label5.position)){ NSLog(@"Label 5 Touched"); }else if(CGPointEqualToPoint(location, label6.position)){ NSLog(@"Label 6 Touched"); } NSLog(@"Touch Made!"); } }

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  • Custom Alignment and Backgrounds Through Greasemonkey

    - by Jivec
    I'm trying to implement something in greasemonkey and it is giving me a fair bit of trouble as I can't get it to work. I frequently use Wolfram Alpha (http://wolframalpha.com) for a lot of things. They have recently updated the home page with a new style. There are settings that you can edit on this page (http://www.wolframalpha.com/homesettings.html) As you would expect when you clear cookies you loose these settings. What I would like to do is have a greasemonky script that sets the background to what ever I like (which will stay also regardless of the state of your cookies). It would also be cool if this background was displayed the whole way through Wolfram Alpha (ie when you make queries too eg. http://www.wolframalpha.com/input/?i=stack+overflow ) The other thing I'm trying to implement but I'm struggling is to force the results pages to be left aligned so that the browser window can be smaller. If anyone could help me with this it would be appreciated, I have tried to do it my self but I'm unsure how to get it to work.

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