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• Validating only selected fields using ASP.NET MVC 2 and Data Annotations

  - by thinknow

  I'm using Data Annotations with ASP.NET MVC 2 as demonstrated in this post: http://weblogs.asp.net/scottgu/archive/2010/01/15/asp-net-mvc-2-model-validation.aspx Everything works fine when creating / updating an entity where all required property values are specified in the form and valid. However, what if I only want to update some of the fields? For example, let's say I have an Account entity with 20 fields, but I only want to update Username and Password? ModelState.IsValid validates against all the properties, regardless of whether they are referenced in the submitted form. How can I get it to validate only the fields that are referenced in the form?

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• Where and how to validate and map ViewModel?

  - by chobo

  Hi, I am trying to learn Domain Driven Design and recently read that lots of people advocate creating a ViewModels for your views that store all the values you want to display in a given view. My question is how should I do the form validation? should I create separate validation classes for each view, or group them together? I'm also confused on what this would look like in code. This is how I currently think validation and viewmodels fit in to the scheme of things: View (some user input) - Controller - FormValidation(of ViewModel) - (If valid map to ViewModel to Domain Model) - Domain Layer Service - Infrastructure Thanks! P.S. I use Asp.net MVC with C#

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• Compiling Scala scripts. How works scalac?

  - by Arturo Herrero

  Groovy Groovy comes with a compiler called groovyc. For each script, groovyc generates a class that extends groovy.lang.Script, which contains a main method so that Java can execute it. The name of the compiled class matches the name of the script being compiled. For example, with this HelloWorld.groovy script: println "Hello World" That becomes something like this code: class HelloWorld extends Script { public static void main(String[] args) { println "Hello World" } } Scala Scala comes with a compiler called scalac. I don't know how it works. For example, with the same HelloWorld.scala script: println("Hello World") The code is not valid for scalac, because the compiler expected class or object definition, but works in Scala REPL interpreter. How is possible? Is it wrapped in a class before execution?

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• Getting empty result within PHP when in browser I get the JSON exception

  - by Pentium10

  I have this code: $url="https://graph.facebook.com/me/friends?access_token=".$access_token."&fields=id,first_name,last_name&limit=10"; $content=file_get_contents($url); Whenever I use this on a non authenticated user I should get feedback of OAuthException, which doesn't show up in the PHP the $content is empty. While if I copy the URL to the browser I get the result and I see the exception. I want to detect if the user is logged in and the session data is valid. What might be wrong?

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• ObjectContext ConnectionString Sqlite

  - by codegarten

  I need to connect to a database in Sqlite so i downloaded and installed System.Data.SQLite and with the designer dragged all my tables. The designer created a .cs file with public class Entities : ObjectContext and 3 constructors: 1st public Entities() : base("name=Entities", "Entities") this one load the connection string from App.config and works fine. App.config <connectionStrings> <add name="Entities" connectionString="metadata=res://*/Db.TracModel.csdl|res://*/Db.TracModel.ssdl|res://*/Db.TracModel.msl;provider=System.Data.SQLite;provider connection string=&quot;data source=C:\Users\Filipe\Desktop\trac.db&quot;" providerName="System.Data.EntityClient" /> </connectionStrings> 2nd public Entities(string connectionString) : base(connectionString, "Entities") 3rd public Entities(EntityConnection connection) : base(connection, "Entities") Here is the problem, i already tried n configuration, already used EntityConnectionStringBuilder to make the connection string with no luck. Can you please point me in the right direction!? EDIT(1) How can i construct a valid connection string?!

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• IEnumerable.Cast<>

  - by Renato Person

  If I can implicitly cast an integer value to a double (and vice versa), like: int a = 4; double b = a; // now b holds 4.0 Why can I not do this: int[] intNumbers = {10, 6, 1, 9}; double[] doubleNumbers2 = intNumbers.Cast<double>().ToArray<double>(); I get an "Specified cast is not valid" error message. Doing the opposite (casting from double to int) results in the same error. What am I doing wrong?

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• SubSonic: MySqlDataReader closes connection.

  - by SchlaWiener

  I am using SubSonic 2.1 and entcountered a problem while executing a Transaction with SharedDbConnectionScope and TransactionScope. The problem is that in the obj.Save() method I get an "The connection must be valid and open" exception I tracked down the problem to this line: // Loads a SubSonic ActiveRecord object User user = new User(User.Columns.Username, "John Doe"); in this Constructor of the User class a method "LoadParam" is called which eventually does if (rdr != null) rdr.Close(); It looks like the rdr.Close() implicitly closes my connection which is fine when using the AutomaticConnection. But during a transaction it is usally not a good idea to close the connection :-) My Question is if this is by design or if it's an error in the MySqlDataReader.

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• jQuery to PHP: no input... kinda

  - by Seva Alekseyev

  Hi all, I'm using jQuery to post HTTP requests to my PHP page (Apache/Linux, if that matters). I carefully validate on the client so that empty requests are not sent. However on occasions, I'd get an empty request like this: - $_POST collection empty ($_GET collection also empty); - Content-Length is nonzero (a number below 100, consistent with a valid POST from my script) - Content-Type properly application/x-www-form-urlencoded - reading from php://input yields an empty string It's as if $_POST is somehow eaten on the way. I checked the code very carefully - I don't do anything to the contents of $_POST. Any ideas, please?

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• Reverse engineer an ORM

  - by Oren Mazor

  Given a [mysql] database with a given schema, is it possible to generate an ORM interface for it? doesn't matter if its php, python or perl. in other words, I have a database and I have to ask it a few questions. while I could just craft a bunch of SQL queries (okay, several dozen), this is way more interesting to think about. is this a valid question, even? I have no design background with ORMs, but I've used a few (django's, symfony's, etc).

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• Using Base SAS to validate Windows Password

  - by Bazil

  We have a signon script that requires a Windows password in order to access and validate against the SAS metadata server. The problem is that if the windows password is changed, and the script is run a few without being updated, then the user gets locked out and has to call IT support for a password reset. What is the simplest way of using Base SAS to validate a windows password? ie to enable a warning to the user if the password provided is not valid... EDIT: The concern is not whether or not this SHOULD be done, only HOW it could be done!

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• Authkit - deferring action for HTTP '401' response to client application

  - by jon

  Form, Redirect and Forward all send an unauthenticated user to a Form on a login page specified within an Authkit middleware application. I'd like to allow a client application to request a service via XHR and then present a custom 'client side' form if a HTTP status code of 401 is returned, which would then post to Authkit for authentication until valid authentication/authorization occured. Specifically, 1) a jquery $.get request might request a resource. 2) if an Authkit cookie check confirmed previous authorization the content would be returned. 3) if not I would like Authkit to simply return the '401 response' (and not redirect to another page, or return a form template) where a client side exception handler would notify the user and present an authentication form. Can Authkit work like this?

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• Visual Studio 2008 setup looking at wrong drive

  - by Keith G

  I'm trying to add a feature to VS 2008. However, the initial install was done with a DVD in drive D: ... I don't currently have the DVD, so I'm trying to do the updating using an .iso mounted as drive E: ... The VS setup program is not able to find the setup files. Is there a way for me to tell VS 2008 setup to look for files in E: instead of D:? Maybe a registry or ini setting? Edit: The specific error message I got was: A selected drive is no longer valid

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• Determining actual args an Excel UDF was called with.

  - by Frederick

  I'm adding a user defined function to Excel with varargs-based signature in C++: XLFUNCTIONIMP(MyFunction)(...); When Excel calls MyFunction, it passes it 30 arguments regardless of how many the user entered in the sheet. The extraneous ones are blank strings. MyFunction, however, is designed to accept empty string arguments. As a result, I cannot tell valid empty strings apart from the extraneous ones sent by Excel. A solution could be to obtain the contents of the actual cell where the user entered the function. However, I can't find a way of doing that from within the implementation of my function. Could someone please suggest a way out?

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• Dialing a command prefix on the iPhone

  - by tewha

  Our application lets users call phone numbers. Users would like to be able to block their caller ID. On other platforms, we let the user specify a custom dialing prefix. For instance, on my cell provider it's #31#. I've tried two approaches so far. First: id url = [NSURL URLWithString: @"tel:#31#0000000"] // produces nil Second: id encoder = ["#31#0000000" stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding]; // produces %2331%230000000 id url = [NSURL URLWithString: [NSString stringWithFormat: @"tel:%@", encoded]]; // produces a valid-looking NSURL which doesn't do anything I'm thinking at this point that I'm just not allowed to dial # and *, even from a Cocoa touch application. (I know it's not allowed from a web app.) Is this true, or am I missing something obvious?

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• MySQL table export to HTML

  - by countnazgul

  Hi all, I've got a little problem with exporting MySQL data to html. The problem is that in one field i have values like this: <a href="http://google.com">Google</a> and when i export the table in html format the generated html table for this fields contains: &lt;a href=&quot;http://google.com&quot;&gt;Google&lt;/a&gt; which is not a valid html link. Is there way to export the table without mysql to convert the < and > chars? Thanks!

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• Partial match in MaskFormatter for jFormattedTextField

  - by Toto

  How do I set up the MaskFormatter and the JFormattedTextField in order to allow partial matches? For example: I want the user to be able to enter numbers with this mask "## ###### ####", so if the user enters '123456789123' the formatter changes it to '12 345678 9123'. However, I also want the user to be able to enter '12346578', be converted to '12 345678' and still be a valid value (so I can get it using jFormatedTextField1.getValue()) This is part of my code (most of it generated by Netbeans): private javax.swing.JFormattedTextField jFormattedTextField1; // ... try { jFormattedTextField1.setFormatterFactory(new DefaultFormatterFactory(new MaskFormatter("## ###### ####"))); } catch (java.text.ParseException ex) { ex.printStackTrace(); } I've tried setting the focusLostBehavior to PERSIST so the value is not cleard after exiting the jFormattedTextField1, but that way I get a null when using the calling jFormattedTextField1.getValue()

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• SQL - query inside NOT IN takes longer than the complete query ??

  - by Aleksandar Tomic

  Hi every1, I'm using NOT IN inside my SQL query. For example: select columnA from table1 where columnA not in ( select columnB from table2) How is it possible that this part of the query select columnB from table2 takes 30sec to complete, but the whole query above takes 0.1sec to complete?? Shouldn't the complete query take 30sec + ? BTW, both queries return valid results. Thanks! Answers to Comments Is it because the second query hasn't actually completed but has only returned back the first 'x' rows (out of a very large table?) No, the query is completed after 30 seconds, not to many rows returned (eg. 50). But @Aleksandar wondered why the question congaing the performance killer was so fast. my point exactly Also how long does select distinct columnB from table2 take to execute? actually, the original query is "select distinct...

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• Php sessions secure log in

  - by Doodle

  My question is about creating a secure log in routine. After comparing the user name and password to the stored values I set a session variable called logged to true. Then as the user surfs around the web page I just check the logged variable for true or false to determine if the user should have access. This is my first time creating something like this. Is this secure? I feel like there is something else that I should be doing to make sure that users are valid.

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• Firefox ignoring padding

  - by iMaster

  I have this CSS code: #tweet-container{ width: 290px; height: 272px; border: 1px solid #CCC; color: #CCC; font-size: 28px; text-align: center; letter-spacing: -2px; min-height: 10px; display: table-cell; vertical-align: middle; padding: 15px; } But firefox doesn't seem to recognize the top and bottom padding. Safari and Chrome both show it normally, and even in Firebug when I add padding-top: it doesn't work. Its like its not a valid statement or something. Is there something I'm missing?

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• Simple variable assignment in Excel 2003 VBA

  - by Mike

  Hi, I am new to VBA in Excel. I'm setting up a simple macro Option Explicit Sub Macro1() Dim sheet sheet = Worksheets.Item(1) ' This line has the error End Sub On the line with the error, I get "Run-time error '438' Object doesn't support this property or method" I can use the Watch window to see that "Worksheets.Item(1)" is a valid object. I've tried changing it to "Dim sheet As Worksheet" but same result. Ok, so what am I missing? Why does this error occur? Thanks! -Mike

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• Verify mail server connection programmatically in ColdFusion

  - by Sergii

  I'm using custom SMTP servers and would like to verify the connection when user enters his own server credentials. Exactly the same type of check as Adobe CF and Railo allow to do when adding mail server. Sure, this does not guarantee that delivery will be working, but at least to check that entered server/username/pass are valid. I can see one tricky way: try to send the email with cfmail and check the mail log. But I believe that it can be done with more elegant. Is there any Java library available with standard ACF/Railo distro to help me? How would I use them? Examples are highly appreciated. Thanks in advance. EDIT: Please don't be confused with Java tag present. Solution needed in CFML. Though it can use some Java libraries, if applicable.

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• How come ftp protocol produces transmission errors sometimes if the data is using TCP, which is checksummed?

  - by Cray

  Every once in a while, downloading (especially large) files through ftp will produce errors. I am guessing that's also partly the reason why all major sites are publishing external checksums along with their downloads. How is this possible if ftp goes through TCP, which has checksum inbuilt and resends data if it is transmitted corruptly? One could argue that this is due to the short length of the CRC in the TCP protocol (which is 16bit I think, or something like that), and the collisions are simply happening too often. but 1) for this to be true, not only must there be a CRC collision, but also the random network error must modify both the CRC in the packet, and the packet itself so that the CRC will be valid for the new packet... Even with 16 bitCRC, is that so likely? 2) There are seemingly not many errors in, say, browsing the web which also goes through TCPIP.

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• Authenticating a Server with Digital Signatures

  - by TomS

  I understand how Non-repudiation and Integrity are achieved with Digital Signatures, but it's the Authentication that I don't grasp yet. I'm developing a Client-Server application in C#, that should be capable of Authentication with Digital Certificates and Digital Signatures. I know how to check the validity and integrity of a Signature (with SignedCms.CheckSignature()), but how does this authenticates any of the parts involved? For example: The client asks the Server for a Digital Signature, The client receives the signature and validates it, If the validation succeeds, continue. The client could be a victim of a man-in-the middle attack and receive a valid signature in step 2. The validation would succeed, but the client wouldn't be talking to the right server. What am I missing?

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• .NET PostSubmitter sends backslashes

  - by Stefan N.

  Hi, I'm using C# to send JSON to a PHP-Script, like this: string json = "{"; json += "\"prop\":\"some text\""; json += "}"; PostSubmitter post = new PostSubmitter(); post.Url = "http://localhost/synch/notein.php"; post.Type = PostSubmitter.PostTypeEnum.Post; post.PostItems.Add("note", json); post.Post(); Of course I'll have to escape the inner quotes, but they get sended to the script! To make things worse: There is text, which already has quotation marks, so those must be escaped to be valid JSON. In this case I want the backslashes to be transmitted. Any idea to accomplish this?

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• Getting RPXNow and Facebook Open Graph to Play Nicely

  - by ramon.tayag

  A requirement to use the RPXNow is to set your Facebook application's connect url to http://mydomain.rpxnow.com. I was just trying to implement Facebook's Open Graph and I see that it tells you to set the Base Domain to the domain that will contain the app_id. However, Facebook does not allow these two domains to look different. When I try to set the base url to mydomain.com, I get this error: Validation failed. Base Domain is not valid. Connect URL must be derived from your Base Domain. Should I create two apps - one for use with RPXNow, and another for use with Open Graph? If not, what should I do? Thanks

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