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Articles indexed Friday May 21 2010

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  • Django | passing form values

    - by MMRUser
    I want to create a user sign up process that requires two different forms with the same data one (1st form) is for filling out the data and other one (2nd form) is for displaying the filled data as a summery (before actually saving the data) so then user can view what he/she has filled up... my problem is that how do I pass 1st form's data in to the 2nd one .. I have used the basic Django form manipulation mechanism and passed the form field values to the next form using Django template tags.. if request.method == 'POST': form = Users(request.POST) if form.is_valid(): cd = form.cleaned_data try: name = cd['fullName'] email = cd['emailAdd'] password1 = cd['password'] password2 = cd['password2'] phoneNumber = cd['phoneNumber'] return render_to_response('signup2.html', {'name': name, 'email': email, 'password1': password1, 'password2': password2, 'phone': phone, 'pt': phoneType}) except Exception, ex: return HttpResponse("Error %s" % str(ex)) and from the second from I just displayed those field values using tags and also used hidden fields in order to submit the form with values, like this: <label for="">Email:</label> {{ email }} <input type="hidden" id="" name="email" class="width250" value="{{ email }}" readonly /> It works nicely from the out look, but the real problem is that if someone view the source of the html he can simply get the password even hackers can get through this easily. So how do I avoid this issue.. and I don't want to use Django session since this is just a simple sign up process and no other interactions involved. Thanks.

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  • Accommodating null values in a list?

    - by h259bws
    Hi, I'm new to Java and Groovy and am running into trouble with the following Groovy script. I created this whittled down version of a larger script to facilitate debugging. The script is iterating through a list trying to calc a running total of the values of all objects in the list. Some or all of these objects' values may be null. Script import org.apache.commons.lang.math.NumberUtils class Field { def name def value } def fields = [ new Field(name:'Annuities %', value:75), new Field(name:'Other %', value:null), ] //def totalFunding = fields.inject(0) {int total, Field myField - // total + NumberUtils.toInt(myField.value,0) as Integer def totalFunding = fields.inject(0) {int total, Field myField - total + myField?.value as Integer } It gets this error: Exception thrown: java.lang.NullPointerException java.lang.NullPointerException at Script3$_run_closure1.doCall(Script3:15) at Script3.run(Script3:14) What is the correct way to accomodate null values? Thanks, Betsy

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  • Using LINQ to fetch result from nested SQL queries

    - by Shantanu Gupta
    This is my first question and first day in Linq so bit difficult day for me to understand. I want to fetch some records from database i.e. select * from tblDepartment where department_id in ( select department_id from tblMap where Guest_Id = @GuestId ) I have taken two DataTable. i.e. tblDepartment, tblMap Now I want to fetch this result and want to store it in third DataTable. How can I do this. I have been able to construct this query up till now after googling. var query = from myrow in _dtDepartment.AsEnumerable() where myrow.Field<int>("Department_Id") == _departmentId select myrow; Please provide me some link for learning Linq mainly for DataTables and DataSets. EDIT: I have got a very similar example here but i m still not able to understand how it is working. Please put some torch on it.

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  • Twitter API + OAuth - 401 error developing locally using reverse SSH tunnel

    - by oliland
    I'm developing a django application which lets users connect their Twitter account. As I'm developing locally, I have set up a reverse SSH tunnel so that the Twitter API has a valid callback url (myserver.net): ssh -nNTR :6969:localhost:8000 myserver.net On successful authentication, Twitter passes back its OAuth access tokens to myserver.net, which in turn attempts to access Twitter's API, which returns a 401 error. I assume that because the callback is different to the address which is accessing the API (myserver.net / localhost), Twitter denies me access. I have tried this: export http_proxy="http://myserver.net:3128" Where myserver.net:3128 is running a Squid Proxy server to tunnel Twitter's API requests from my development machine so they appear to be coming from myserver, but receive the same 401 error. When I deploy to a server with a proper hostname / static IP address it works fine. What else do I need to do?

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  • how to Clean up(destructor) a dynamic Array of pointers??

    - by Ahmed Sharara
    Is that Destructor is enough or do I have to iterate to delete the new nodes?? #include "stdafx.h" #include<iostream> using namespace std; struct node{ int row; int col; int value; node* next_in_row; node* next_in_col; }; class MultiLinkedListSparseArray { private: char *logfile; node** rowPtr; node** colPtr; // used in constructor node* find_node(node* out); node* ins_node(node* ins,int col); node* in_node(node* ins,node* z); node* get(node* in,int row,int col); bool exist(node* so,int row,int col); //add anything you need public: MultiLinkedListSparseArray(int rows, int cols); ~MultiLinkedListSparseArray(); void setCell(int row, int col, int value); int getCell(int row, int col); void display(); void log(char *s); void dump(); }; MultiLinkedListSparseArray::MultiLinkedListSparseArray(int rows,int cols){ rowPtr=new node* [rows+1]; colPtr=new node* [cols+1]; for(int n=0;n<=rows;n++) rowPtr[n]=NULL; for(int i=0;i<=cols;i++) colPtr[i]=NULL; } MultiLinkedListSparseArray::~MultiLinkedListSparseArray(){ // is that destructor enough?? cout<<"array is deleted"<<endl; delete [] rowPtr; delete [] colPtr; }

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  • Alert user when their session is about to expire

    - by budugu
    Note: Cross posted from Vijay Kodali's Blog. Permalink Here is a quick and dirty trick to alert users on session timeout. This is not a perfect solution. But it will give reader an idea to work on... Some facts before we start: Session doesn't end When the user closes his browser When the user navigates away from your page When user connection lost. Session ends, when the server hasn't gotten a request from the user in a specific time (Session timeout value)....Permalink

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  • Windows Server 2008 Static IP Address

    - by Gauls
    I have Win 2008 Server VM and want to set static IP address so that i can RDP into instead of using VM player (mouse gets out of focus as the size of the VM increases). Now while making the changes i see two TC/IPv6 and TC/IPv4 i try changing the IPaddress from obtain autimatically, but it always goes to "Unidentified Network". If i leave it to automatically obtain IP,i still cannot RDP into it. I have tired disabling TC/IPv6 from reistry. Any other suggestions? BTW the same setting works fine with WIN XP and i can RDP into all Win XP VM's Cheers Gauls

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  • Need help with MS Access 07 & Reports

    - by Moe
    Hey there, I'm finding it difficult to get MS reporting working to what I'd like to show. What I'm trying to do is: a) In my database store a URL file (HTTP external file), that is a .jpeg. I'd like to use that URL to call the image on the report sheet. I have tried to use 'Control source' on the data panel, but with no success. Any way I can get Dynamic Images to show up on each database. Also, I have a couple of Relational Databases. One Defines Values: For Example: DefinePets('petID','Name of Pet') The other one links the Main DB with the 'DefinePets' database. Eg: connect('petID','mainID','extraFeild') I'd like my report to Go into the "connect" Table, where the the currently viewed Record Value = mainID, then find petID and return Name of Pet. There is a many to many link between definePets and the main Table. (Therefore connect is joining them up) Or is that too much to ask from a simple package like Access? Thanks.

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  • How do I redirect to another page with ASP.NET?

    - by Sanctus2099
    I know it's a simple question but I really can't find anything on Google. Sorry if I'm not searching right. I created 2 pages and in the first one I have a button. What should I write in the C# code to change to redirect me on the second page? I usually know my way around C# but I'm totally new in ASP.

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  • SqlException: Login failed for user

    - by Younes
    I use a dbml for my Data Access Layer to provide the data that i need in my app. When i connect from the server explorer everything seems fine. I choose to use my windows authentication and the connection test shows everything works just fine. When i Build my solution and run it on my IIS it says that i'm using a login that is not working. How to solve this issue?

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  • How to display full documentation of a method as you type in VS?

    - by drasto
    The title is pretty descriptive... Is there any extension that let me see FULL documentation of the method I'm typing ? I would like to see the documentation as I can see it in Object Browser with description of parameters and everything not just some "summary". So what I'd like to see when I type String.Format is: Of cause with an option to see all overrides. It may be part of intelisence or I don't know what it does not really matter.

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  • Observer pattern and violation of Single Responsibility Principle

    - by Devil Jin
    I have an applet which repaints itself once the text has changed Design 1: //MyApplet.java public class MyApplet extends Applet implements Listener{ private DynamicText text = null; public void init(){ text = new DynamicText("Welcome"); } public void paint(Graphics g){ g.drawString(text.getText(), 50, 30); } //implement Listener update() method public void update(){ repaint(); } } //DynamicText.java public class DynamicText implements Publisher{ // implements Publisher interface methods //notify listeners whenever text changes } Isn't this a violation of Single Responsibility Principle where my Applet not only acts as Applet but also has to do Listener job. Same way DynamicText class not only generates the dynamic text but updates the registered listeners. Design 2: //MyApplet.java public class MyApplet extends Applet{ private AppletListener appLstnr = null; public void init(){ appLstnr = new AppletListener(this); // applet stuff } } // AppletListener.java public class AppletListener implements Listener{ private Applet applet = null; public AppletListener(Applet applet){ this.applet = applet; } public void update(){ this.applet.repaint(); } } // DynamicText public class DynamicText{ private TextPublisher textPblshr = null; public DynamicText(TextPublisher txtPblshr){ this.textPblshr = txtPblshr; } // call textPblshr.notifyListeners whenever text changes } public class TextPublisher implments Publisher{ // implements publisher interface methods } Q1. Is design 1 a SPR violation? Q2. Is composition a better choice here to remove SPR violation as in design 2.

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  • How can I provide property-level string formatting?

    - by jhubsharp
    Not sure if the question wording is accurate, but here's what I want to do: I want to databind a class with some strings in it: class MyClass { public string MyProperty { get; set; } public string MyProperty2 { get; set; } } When databinding, everything behaves normally. On the back end, I'm writing to a file and I want MyProperty2 to always be encrypted using some encryption algorithm. I want my back-end code to write each string without needing to know that encryption is required (I want the class to know it should be encrypted, not the consumer). Can I do this with a type converter, or something similar? EDIT: There are other scenarios as well. Some booleans I want to format as "Y" or "N", other booleans I want formatted as "Enabled" / "Disabled", etc. I can write (and have written) helper methods and let the file writer call the helper methods as appropriate, I'm just wondering if there's a way to do this without the file writer needing to know which objects need which kind of formatting and let the objects tell that to the file writer.

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  • Dumping an ADODB recordset to XML, then back to a recordset, then saving to the db

    - by Mark Biek
    I've created an XML file using the .Save() method of an ADODB recordset in the following manner. dim res dim objXML: Set objXML = Server.CreateObject("MSXML2.DOMDocument") 'This returns an ADODB recordset set res = ExecuteReader("SELECT * from some_table) With res Call .Save(objXML, 1) Call .Close() End With Set res = nothing Let's assume that the XML generated above then gets saved to a file. I'm able to read the XML back into a recordset like this: dim res : set res = Server.CreateObject("ADODB.recordset") res.open server.mappath("/admin/tbl_some_table.xml") And I can loop over the records without any problem. However what I really want to do is save all of the data in res to a table in a completely different database. We can assume that some_table already exists in this other database and has the exact same structure as the table I originally queried to make the XML. I started by creating a new recordset and using AddNew to add all of the rows from res to the new recordset dim outRes : set outRes = Server.CreateObject("ADODB.recordset") dim outConn : set outConn = Server.CreateObject("ADODB.Connection") dim testConnStr : testConnStr = "DRIVER={SQL Server};SERVER=dev-windows\sql2000;UID=myuser;PWD=mypass;DATABASE=Testing" outConn.open testConnStr outRes.activeconnection = outConn outRes.cursortype = adOpenDynamic outRes.locktype = adLockOptimistic outRes.source = "product_accessories" outRes.open while not res.eof outRes.addnew for i=0 to res.fields.count-1 outRes(res.fields(i).name) = res(res.fields(i).name) next outRes.movefirst res.movenext wend outRes.updatebatch But this bombs the first time I try to assign the value from res to outRes. Microsoft OLE DB Provider for ODBC Drivers error '80040e21' Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. Can someone tell me what I'm doing wrong or suggest a better way for me to copy the data loaded from XML to a different database?

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  • How to use web camera in android emulator to capture a live image?

    - by Kumar
    Hi,As far as i know, Android emulator doesn't have a camera .To capture a live image we have to use web camera.I have seen code in this web site "http://www.tomgibara.com/android/camera-source" to use web camera in android emulator to capture a image but, i don't how to use this code.I am new to this field , can any one help me how to do it. regards, s.kumaran.

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  • What are jQuery best practices regarding Ajax convenience methods and error handling?

    - by JonathanHayward
    Let's suppose, for an example, that I want to partly clone Gmail's interface with jQuery Ajax and implement periodic auto-saving as well as sending. And in particular, let us suppose that I care about error handling, expecting network and other errors, and instead of just being optimistic I want sensible handling of different errors. If I use the "low-level" feature of $.ajax() then it's clear how to specify an error callback, but the convenience methods of $.get(), $.post(), and .load() do not allow an error callback to be specified. What are the best practices for pessimistic error handling? Is it by registering a .ajaxError() with certain wrapped sets, or an introspection-style global error handler in $.ajaxSetup()? What would the relevant portions of code look like to initiate an autosave so that a "could not autosave" type warning is displayed if an attempted autosave fails, and perhaps a message that is customized to the type of error? Thanks,

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  • Do I have to have an 'unregister' button on my users on an email altering application?

    - by Glycerine
    Hey guys - I know this is not a strictly programming question but I'm building an application where users sign up to traffic alerts. I have the whole thing dusted but I haven't got an 'unregister button' I know its good UI to have one, but I was hoping if someone knew the legalities of the topic? The user can sign in and uncheck what alerts to receive, but not scrub their details - On the email sent I have an unsubscribe button. Seeing as this is going to the public, can I turn round to my boss and say "by law we need one" else he might just turn around and try and charge the client, and I don't agree with that for something so rudimentary

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  • Video For Windows disable FILE_FLAG_NO_BUFFERING

    - by cunzlow
    I am using Video For Window's AVIFile functions. When I use AVIFileOpen I notice that it uses the flag FILE_FLAG_NO_BUFFERING when creating the .avi file. ProcessMonitor shows the that file was created with "no buffering". This flag is causing performance issues and I was wondering if there is a way to use this function without that flag.

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  • Deploying an MVC 2.0 .Net 4.0 application to Windows Server 2003

    - by Brett Rigby
    I've spent the past couple of nights on this, and have come to the conclusions that I'm doing something wrong! Basically, I have my .Net 4.0 MVC 2.0 application deployed to my 2003 Server and it's constantly giving me the following error: The value for the 'compilerVersion' attribute in the provider options must be 'v4.0' or later if you are compiling for version 4.0 or later of the .NET Framework. To compile this Web application for version 3.5 or earlier of the .NET Framework, remove the 'targetFramework' attribute from the element of the Web.config file. I also have the .Net 3.5 MVC 1.0 application also deployed to the same server (from before the upgrade to .Net 4.0), and it works absolutely fine. I have re-run through Phil Haack's post on IIS6, making the necessary changes for .Net 4.0, but no luck. I have been through the steps in the British Developer's post too, but no joy. I have also tried the steps outlined in Johan's blog post, but the settings he mentions were already enabled. Obviously, I can't simply upgrade to a 2008 box, nor do I want to downgrade my software back to < 4.0 - any other ideas?

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  • Custom BindAttribute

    - by Chao
    Is there a way to implement your own BindAttribute. Preferably by deriving from BindAttribute, but if you need to impliment it in your own ModelBinder how would you go about doing this?

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  • How can I improve the performance of LinqToSql queries that use EntitySet properties?

    - by DanM
    I'm using LinqToSql to query a small, simple SQL Server CE database. I've noticed that any operations involving sub-properties are disappointingly slow. For example, if I have a Customer table that is referenced by an Order table, LinqToSql will automatically create an EntitySet<Order> property. This is a nice convenience, allowing me to do things like Customer.Order.Where(o => o.ProductName = "Stopwatch"), but for some reason, SQL Server CE hangs up pretty bad when I try to do stuff like this. One of my queries, which isn't really that complicated takes 3-4 seconds to complete. I can get the speed up to acceptable, even fast, if I just grab the two tables individually and convert them to List<Customer> and List<Order>, then join then manually with my own query, but this is throwing out a lot of what makes LinqToSql so appealing. So, I'm wondering if I can somehow get the whole database into RAM and just query that way, then occasionally save it. Is this possible? How? If not, is there anything else I can do to boost the performance besides resorting to doing all the joins manually? Note: My database in its initial state is about 250K and I don't expect it to grow to more than 1-2Mb. So, loading the data into RAM certainly wouldn't be a problem from a memory point of view. Update Here are the table definitions for the example I used in my question: create table Order ( Id int identity(1, 1) primary key, ProductName ntext null ) create table Customer ( Id int identity(1, 1) primary key, OrderId int null references Order (Id) )

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