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• jquery disable rule validation on a single field

  - by shake

  I am using mvc to create forms that are generated at runtime. For validation, I am trying my hand at the jquery validation library which is very convenient to use. I have the validation expression of each field in the cdata attribute of the tag <input type="text" name="xyz" id="xyz" class="defaultTextBox" cdata="{validate:{required:true, decimal:true, messages: {required:'Please enter an decimal value', decimal:'Please enter a valid decimal'}}}"> This works beautifully. Now one more requirement I have is that some fields are being shown and hidden according to the logic on the page and I need to disable the validation on the hidden fields such that they do not interfere with the form submission. Just toggling the required:true to false and back to true should be enough. Only i do not know how. Anyone has any experience with that?

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• How to implement async pattern in windows forms application?

  - by Alkersan

  I'm using an MVC pattern in winforms application. I need to call remote service asynchronously. So On some event in View I invoke corresponding Presenter method. In Presenter I call BeginInvoke method of service. But to View must be updated only in Main Thread. I could actualy point CallBack to some function in View, and update it`s controls state, but this conflicts with MVP pattern - View must not be responsible for data it carries. This callback function must be in Presenter. But how then invoke View in Main Thread?

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• What is the preferred way of loading browser-specific CSS files?

  - by Yuval A

  What is the best way to handle browser-specific CSS file loading? Assume you are running in the context of a proper MVC framework. Here are some options, you are free to discuss the pros and cons of these options as well as any other methods you know of, and prefer: Server-side solution: use the controller (e.g. servlet) to analyze the user-agent header in the request and return the proper CSS file in the view. Use browser specific hacks to load files, such as: <!--[if IE]> ... <![endif]--> Load CSS files asynchronously in client side by inspecting user-agent and adding respective files Use a client side framework to handle browser-specifics (such as jQuery browser-specific css rules)

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• How to transfer control from javscript to asp page from javascript

  - by junaid ahmed

  I am very new to .net. I searched and googled a lot but couldn't find the solution for my issue. I have a asp .net application, In my login page i only have user id field. When the user submits the button, i need to have a transitional asp page (page which user doesn't see but runs in background) which will run some javascript and transfer the control to either page a or page b based on some condition. How do i achieve this? How do i call a controller action from javscript in mvc architecture in .net

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• TDD Example for Business Apps

  - by Jimmo

  I understand the general idea about unit testing and have used it in scenarios where complex interactions were happening in a system, but I still have a question about all of those principles coming together. We are cautioned about not testing the framework, or the database. Good UI design does not lend itself to non-human testing. UI interaction in general is excluded in MVC frameworks. In many apps what is left?. 37signals talks about extensive unit testing, but in an app like Basecamp or Backpack, what exactly are the types of things being tested through appropriate unit tests? What would 100% code coverage mean in that scenario?

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• Pre-packaged Rails applications

  - by Craig

  Seems like most Rails applications have similar 'base' functionality. As such, it seems that there would be value in having pre-build Rails applications at various functionality points such as: basic User model with authentication using Authlogic #1 + openid integration #2 + authorization using declarative_authorization #3 + Administration module #4 + a Profile model Themes (useful stylesheets and such) Friendship model Geocoding ... In addition to the basic MVC stuff, these applications would include: testing harnesses seed data git support One could choose start from any of these functionality points. Other than the sample application that are available with the various gems/plugins, are there projects such as these? If not, I would certainly be willing to contribute what I have.

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• Use a ContextLoaderListener in accordance with DispatchServlet

  - by Phuong Nguyen de ManCity fan

  I want to use both ContextLoaderListener (so that I can pass Spring Beans to my servlet) as well as DispatchServlet (Spring MVC). However, currently I have to pass init param to these both class initializer: <param-name>contextConfigLocation</param-name> <param-value> /WEB-INF/spring/app-config.xml </param-value> So, I use the same xml for these both classes. Wonder if it would lead to my beans being initialized twice? If yes, how would I do to avoid that?

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• Special characters incongruence

  - by Enrique

  Hello I'm building a Spring MVC web application that runs on Tomcat 6.0.20 and JDK 1.6.0_19. When I send some special characters through an HTML form some of them are stored as question marks ? For example these symbols are stored correctly: €, á, é, í, ‰, etc But some symbols are replaced with ? like: £, ?, ? MySQL tables charset is utf-8. My jsp also use utf-8 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> I have included org.springframework.web.filter.CharacterEncodingFilter in web.xml as suggested here When I debug the POST request when sending 3 characters €a£ with firebug I get: %E2%82%ACa%E2%82%A4 which is correct since E2 82 AC is the code for € and E2 82 A4 is the code for £ but £ is stored as ? in the database. When I save £ directly into the database it is displayed correctly in the webpage. How can I fix this?

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• Are static delegates thread-safe?

  - by leypascua

  Consider this code snippet: public static class ApplicationContext { private static Func<TService> Uninitialized<TService>() { throw new InvalidOperationException(); } public static Func<IAuthenticationProvider> AuthenticationProvider = Uninitialized<IAuthenticationProvider>(); public static Func<IUnitOfWorkFactory> UnitOfWorkFactory = Uninitialized<IUnitOfWorkFactory>(); } //can also be in global.asax if used in a web app. public static void Main(string[] args) { ApplicationContext.AuthenticationProvider = () => new LdapAuthenticationProvider(); ApplicationContext.UnitOfWorkFactory = () => new EFUnitOfWorkFactory(); } //somewhere in the code.. say an ASP.NET MVC controller ApplicationContext.AuthenticationProvider().SignIn(username, true); Are delegates in the static class ApplicationContext thread-safe in the sense that multiple-threads can invoke them? What potential problems will I face if I pursue this approach?

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• Upload/Download files with ASP.Net using Visual Studio Web Server

  - by jlnorsworthy

  I need to upload image files and store them on the webserver, then be able to display them in html. I'm currently using AppDomain.CurrentDomain.BaseDirectory to get a path to read and write files. Firefox won't display the image as I just get an img tag with "src='C:...' Is it possible to read/write files like this with Visual Studio web server? I know it'll be possible with IIS, but I don't want to do that if I don't have to (pretty new to web development) I'm implementing this with ASP.Net MVC 2, but I don't think that is relevant.

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• Using IPrinciple.Identity.Name as a key in a dataBase to identify user's rows.

  - by bplus

  I'm writing a small intranet app that uses Windows Authentication and Asp.Net MVC. I need to store various bits of data in a db against each user. As far as I can tell the IPrinciple object does not seem to have something like a unique id. So I was thinking I could just use User.Identity.Name as a unique value to identify rows in my db. Is this a bad idea? Is there an alternative to this approach? Thanks for any help.

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• Cheap shared windows hosting

  - by Elangovan

  Hi I have recently purchased a domain from go daddy, now I am looking for a cheap windows hosting. Following are my requirements Shared Windows hosting Should be cheap in price Should have at least one SQL server Db and one mysql db. Should support atleast asp.net 3.5 and php Will be good if it has support for asp.net mvc (no problem even if it is not available also) Should be able to install third party blog sites. Bandwidth, total space and performance are not very important. Silverlight is also an added advantage (no problem even if it is not available also). There should be no advertisement or banner added by the hosting company in the site.

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• Ensuring Updated CSS/JavaScript on Client Side

  - by Alex

  I'm trying to ensure that visitors of my ASP.NET MVC website always have the most-current CSS and Javascript (and not some older cached version). I tried to realize this by generating a seed value when the application domain starts, and automatically append it to the CSS and Javascript URLs (so now instead of /Content/All.js the link is /Content/All.js?549238 etc.). Unfortunately I just found out by debugging via Firebug that this causes now a full download request every time (the new "seeded" response is no longer cached at all, but I only wanted the first check to download the 'updated' version, but then cache again/only check if there is a difference). How can I achieve my goal, is there a better way of doing this? I need the client to always request the newest version, but then cache if no change happened. Edit: This appears to be related to the fact that my page is served over SSL. I asked a follow up question here regarding enabling clientside caching with SSL.

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• How to implement automatic reflection of direct SQL Updates of the underlying database, in an ActiveRecord in Ruby on Rails ?

  - by Vadim Eisenberg

  Hello ! I am new to Ruby on Rails and I have a (maybe naive) question: I want to implement reflection of direct SQL Updates of the underlying database in an ActiveRecord (and finally in the generated html). By "direct updates" I mean updating the database bypassing the ActiveRecord methods, for example by MySQL console. I guess here MySQL triggers could be used that would call some stored procedure that would cause the appropriate ActiveRecord to be reloaded. Is there some automatic handling of this scenario in ActiveRecord/Ruby on Rails ? Did somebody implement this scenario ? Can somebody recommend using other MVC frameworks to reflect direct changes in mapped databases ?

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• How to imitate the workflow view of Automator?

  - by andyfeind

  I’m starting to develop my first full-blown Cocoa application containing a view which I would like to behave (and look) similar to Automator’s AMWorkflowView. The basic features I’d like to achieve: Positioning of subviews Display of subviews in expanded / collapsed states Multiple selection Drag and drop In order to get accustomed to Cocoa, I started with a custom NSView which mainly served as a container for the custom subviews and handled their positioning and multiple selection. The subviews are also subclasses of NSView, and contain a variable amount of views themselves, like buttons, labels and popup menus, and therefore can have different heights. This worked quite well, but before going on, I want to make sure to have everything neat and tidy according to the MVC pattern. I suspect that there already is a class in Cocoa that facilitates the implementation of a view container, like maybe NSCollectionView. It seems that there is no (easy) way to display differently sized views in an NSCollectionView, though. Should I continue implementing my custom NSView (probably using an NSArrayController for selection and sorting support), or are there better ways to go? Any help is much appreciated

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• VS2008 - 'Set as startup project' setting dissapearing.

  - by UpTheCreek

  I have a solution with a bunch of projects in it. The 'startup' project is a ASP.NET MVC Web Application. I set as the startup project (by right clicking on it in Solution Explorer and selecting 'set as startup project'. The project title goes bold and everything works fine for a while. Then I will be editing one of the supporting projects, and come to click the 'Start Debugging' button, and bang - the 'project of this type cant be started' message. I then check, and the web project is no longer set as the startup project. And so on.... Anyone know why this is happening?

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• Books/resources on authentication and authorization in layered applications

  - by Tommy Jakobsen

  I've been trying to find resources and guidelines for implementing authentication and authorization in multiple layered architectures (C#), but haven't found any "best practices" or patterns to use. And I figured, that there must be some patterns for this, as it is a pretty important area? The application that we're developing, is layered traditionally, having data layer (Entity Framework 4) repositories domain layer service layer (can be WCF, with data transfer objects) multiple clients consuming the WCF service (ASP.NET [MVC], Silverlight, WPF) and clients accessing a service layer directly (no WCF) Are there books/articles/blogs that dig deeply into this area? Primarily about authorization such as handling multiple roles and attributes attached to users). It doesn’t have to be specific for the .NET Framework, but it would be preferred.

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• Single-Page Web Apps: Client-side datastores & server persistence

  - by fig-gnuton

  How should client-side datastores & persistence be handled in a single-page web application? Global vars vs. DI/IoC: Should datastores be assigned to global variables so any part of the application can access them? Or should they be dependency injected where required? Server persistence: Assuming a datastore's data needn't always be persisted to the server immediately, should the datastore itself handle persistence? If not, then what class should handle persistence and how should the persistence class fit into the client-side architecture overall? Is the datastore considered the model in MVC, or is it something else since it just stores raw data?

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• extending spring form tag library attributes

  - by TimmyJ

  I'm using Spring's form tag library in a Spring MVC application that I am developing. The company I am working for has implemented some company-wide policies based on the definition of custom attributes for certain tags. For instance, by default (though the inclusion of a standard javascript file) all tags have their values automatically converted to upper case. In order to disable this one would define their tag with a custom attribute in the following way: <input type="text" uppercase="false" /> The problem is that the addition of these custom attributes to a spring:form tag causes an error at runtime. I've pasted the error below. org.apache.jasper.JasperException: /WEB-INF/jsp/reportCriteria.jsp(45,5) Attribute uppercase invalid for tag input according to TLD My question is: is there any way to extend the TLD to allow for these attributes, or is there any other way add these custom attributes to these spring:form tags?

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• .NET - Verify and Install .NET Framework 3.5 before running application

  - by Tufo

  PLEASE READ THE FULL QUESTION BEFORE POST YOUR ANSWER Hello guys! I'm currently developing a "Extremelly customized Installer Application" in C# for installing a old classic ASP application. It'll be used during the 2.0 version is developed (ASP.NET MVC with C#). As its so different from the efault install packages, I've made it as normal windows application, not as setup application (a setup application don't let us customize so much as I need). And here is the problem: As its a windows application, I must "Release" it and send the compiled .EXE with the .DLLs, I must not "Publish" because if i do so, the published .EXE will "install the installer" and not my application. I need a way to verify and install the .NET Framework 3.5 like a bootstrap package prerequisite used in publishing option, but remember that I'm not publishing, I'm doing a "Release" build. Thanks for any help!

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• Beginner Design pattern question (Web Services involved)

  - by zombie

  Hi all ! I am a noob to web services world. I need to develop a login validator module and expose it as a service. I want it to be service independent, i.e I should have the option of exposing it as a SOAP service or REST service in the future. What pattern should I follow ? Sorry if I am unclear in my requirements, I can clarify as per need. Thanks !! Edit : I am using Eclipse as an IDE and Jersey libraries. I am not into any framework, simply using the MVC pattern. I find a lot of difference between SOAP ann REST methods, so I want my methods to be implementation independent - i.e I should be easily able to use my method through a SOAP or REST service call as per need. What should I do for maximum flexibility ?

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• What is the preferred method of device-specific rendering in .net websites?

  - by alimac83

  I'm working on a website using webforms (although I'd be keen to hear how this works with MVC) and I'm trying to figure out the best approach for rendering content for mobile devices. Usually when I'm working on sites that have to be viewed on mobile devices, I use media queries to style the content differently. The problem is that in my current scenario I'm trying to display different content altogether, rather than just changing the layout of existing content. What's the preferred approach for this? I've had a look at 'device specific rendering' on msdn (http://msdn.microsoft.com/en-us/library/hkx121s4.aspx) although I'm not sure if this is a good approach? What are the pros/cons/alternatives? Thank you EDIT: I've found this but it's for use with mvc4, not webforms. EDIT #2: I think I've found what I'm after here but is this a good approach?

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• Who plans to go back to using Web Applications in ASP.NET 4.0?

  - by Banzor

  So, it looks like Microsoft has gone back to pushing Web Application Projects* in ASP.NET 4.0. If you are like me, you converted to Website Projects in 2.0 and have never looked back. I recently spent some time trying to convert a Website Project to Web Application Project and was surprised at how tedious it was. So I am wondering what everyone is planning to do in VS 2010? Also, feel free to mention what you use now. Maybe I am the only sucker that converted to using Website Projects in 2.0... *Excluding MVC since it is the only option there

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• Codeigniter view file looping query

  - by user2505513

  Right, I'm unsure about how to code my view file to generate following query results WITHOUT compromising the principles of mvc. Query in model: SELECT * FROM events GROUP BY country, area ORDER BY country, area View: <?php if (isset($query)):?> <?php foreach ($query as $row):?> <h2><?=$row->country?></h2> <h3><?=$row->area?></h3> <?php endforeach;?> <?php endif;?> I want the results to display: England North South West - utilising the GROUP BY parameter As opposed to: England North England South England West Has anybody any advice as to how to achieve this?

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• Session sometimes timesout too quick

  - by kaivalya

  I am noticing session timeouts on my asp.net mvc web app randomly without browser being incative for for more than few minutes. My understanding is the default timeout should be 20mins. But sometimes I get a timeout in couple minutes or even less than that. For example after browsing on the site for a while I might get a session timeout when i refresh a page very soon after I enter the page. This is very random but I have seen this happen quite a few times now and I am not sure how I can trace this to see why I loose sessions every once in a while whithout browser being inactive long. I checked my web.config an no timeout value is defined there so I assume it should be 20mins. Hard to debug as this does not occur regularly..

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