I'm rather new to MVC2 (never been in MCV1) though I'm a WebForms developer for some years now...
in my MCV 2 start project I created a App_Code folder that I would put my Business Classes on it, I also add 2 References to 2 DLLs used for the API I'm about to use.
But I don't get Intellisense on the referenced objects
What am I doing wrong?
alt text http://www.balexandre.com/temp/2010-07-28_1343.png
Is this so much different from the WebForms part?
Added
Even if I put the Object in Models instead App_Code (where I normally put all code in WebForms) I still don't get the normal intelisense, so... it just tells me that something is wrong ... dang! MVC is hard! I probably should do this in WebForms...
alt text http://www.balexandre.com/temp/2010-07-28_1509.png
This has nothing to do with MVC2, and everything to do with you're doing it wrong. I can tell that its a possibility, as you're using App_Code (I mean, who does that?). I'd definitely suggest backing up and reading some MVC tutorials, as it IS much different (although not in the way you're asking about).
I'm not exactly sure WHAT you're doing wrong, however. It might bethat PerceptiveMCAPI is internal to the assembly, it might be because there is a bug in VS, it might be that you haven't imported the correct namespace... it could be a number of different things.
I'd do the following: 1) load the assembly in reflector and make sure you have the namespace and type name and that it is public 2) use the fully qualified name of the type 3) compile, check all errors and 4) restart VS.
If all else fails, Connect.
See the Models directory -- that's where your model classes would go, assuming the class is a view model class. Having said that, it should be able to pick up and provide intellisense for whatever references you add. App_Code isn't really intended for a Web Application project (the type used by MVC) where the code is compiled statically, but rather for a WebSite where the code is compiled dynamically at runtime. It could be the "special" nature of the directory that is causing the problem because it doesn't fit the project type. You might try simply creating a different directory (if Models isn't appropriate) and not use the special App_Code directory for your code. A separate class library project with a project reference in the web application would be another alternative and is the one I usually use for non-viewmodel/controller code.
Related
everyone.
I'm trying to create new Scaffolded item for simple ASP.NET Wep API application which should be based on domain object class and DbContext derivative in separate assembly. The assembly is in the solution, target app has a reference to it (and manually created code which invokes the classes from my lib is build up without any errors) and, obviously, the classes I've mentioned have access modifier public.
The problem is wizard for creating new scaffolded item cannot see my model classes. (By the way, when the model classes were in another ASP.NET MVC5 app the wizard worked well.) I'm using Visual Studio 2013 Update5.
How to fix this? Any workaround would be helpful too!
Sorry for disturbing.
the origin of the problem seems to be that I've move my data model classes from ASP.NET MVC app into my class library in wrong way.
I've not just cut/paste them, but copy-paste, cut-paste (confirmed replacement).
this is the only thing which could cause the problem (although I still don't know the details).
Never the less I've started from the beginning again and cut/past the data model files initially - everything seems to work fine now.
I have copied the Forms from the /libs/foundation/components/form to /apps/mywebsite/components/form, I made some changes to the copied form files but still the default form is getting called.
Could you let me know or provide some documentation for the forms.
Thanks in advance
The problem is that you moved things to:
/apps/mywebsite/components/form
Instead, you need to copy them to:
/apps/foundation/components/form
apps overrides libs ONLY if the path is otherwise the same
so:
/apps/something/something/somethingelse
will override:
/libs/something/something/somethingelse
if ANY part of that path is different, that overlay won't work.
In addition, if something calls a component/resource/whatever under /libs using the fully qualified name (e.g. actually including /libs/ at the beginning) then it will still use that. But this is rare.
Let me know if you have more issues.
BTW, you can change this search approach (apps before libs) in the resource resolver settings in OSGI. It comes this way by default but can be changed.
If you didn't want to overrride but extend the foundation forms, you need to make sure that you copied everything or have the inheritance to foundation right. Most important is the cq:editConfig/cq:formParameters, where you need to have sling:resourceSuperType="foundation/components/form/defaults/field". If you use a cq:template instead, you need to set the supertype parameter there.
Then you would have to use your components on the page instead of the foundation ones.
I am trying to build a simple gwt project that fetches tweets and displays them.The server passes back the tweets of type twitter4j.Tweet to the client.
Both modules import twitter4j.Tweet.
But when I run I get the following error:
--- ERROR: Line 37: No source code is available for type twitter4j.Tweet; did you forget to inherit a required module?.
I seem to have problems in inheriting twitter4j. All the posts I have seen about inheriting a jar file are not clear about how to do so. I understand I must write an inheritance instruction into gwt.xml file, something like
---
but if I try
---
it does not work. Can anyone please explain?
In a post I found on the Web one person suggested not to inherit it but:
-- Don't put twitter4j to your gwt.xml. Just add it your project class path. and make all functionalities like status updating and all in your serviceImpl. Try
This confuses me even more. I have added the jar file to my project libraries. But it does not work
I suspect I am missing something quite elementary here, but I am totally stuck. Is there something like a GWT path?
Many thanks for any help
Keep in mind that everything in your client package is compiled to JavaScript and executed in the user's browser. Thus, you'll only be able to use twitter4j's classes on the server-side of your application; you'll have to create some sort of light-weight GWT-serializable "proxy object" to pass data back and forth between your client and server tiers.
Since you can't use twitter4j on the client side of your app, you will not need anything in your .gwt.xml file referencing it. Instead, you'll add twitter4j to your classpath and do all your updating on the server side (as mentioned toward the bottom of your question). You do mention that it "does not work," but there's not enough information in your question to try to figure out why.
Here's my situation. I have a "Cities" table in a database that has each city's name, latitude, and longitude. In a silverlight project I'm developing, I need to bind to the city's location, which needs to be some sort of encapsulated form of latitude + longitude. So, to do this, I've made a Location object. I actually need this Location object in general in my silverlight project since the whole project revolves around mapping, so it makes sense for it to be there.
The problem is I want to extend my City object (from the Entity Framework in RIAServices) with a Location property, but I can't do that from my silverlight project since the generated code of RIAServices declares the City object as sealed. Therefore, it seems I need to extend City with a partial class in RIAServices.Web, but to do that, it needs a reference to my Location object, which is back in my main silverlight application. I suppose I could have Location in a separate assembly and have both my silverlight app and RIAServices.Web reference it, but isn't bad design to have RIAServices reference any specific application files like that?
So the problem is this: my entity framework needs the Location object, and my silverlight app also needs it - how to do I share this common class between the two?
Thanks for all the help - I'm really trying to follow a good design pattern here, so I didn't want to hack anything to get it to work.
I think I just figured it out: put Location.cs in RIAServices.Web, but rename it to Location.shared.cs. Now RIAServices.Web will automatically copy it over to RIAServices in its code generation, and I can reference it in my silverlight project (which already references RIAServices). I can also extend my City object back in RIAServices.Web with a Location property since Location.cs is location in RIAServices.Web already. Hooray!
(Does anyone see any design issues with this solution?)
I'm using the latest version of the FacebookSDK (4.0.2) (facebooksdk.codeplex.com)
And I noticed the Src code is made up of several projects namely:
1)
Samples -> Facebook.Samples.AspWebsite Project
Samples -> Facebook.Samples.MvcFacebookApp Project
Samples -> Facebook.Samples.MvcWebsite Project
2)
Tests -> Facebook.Tests
Tests -> Facebook.Web.Tests
3)
Facebook Project
Facebook.Web Project
Facebook.Web.Mvc Project
Okay, so I am building a Facebook Canvas .Net 4.0 MVC 2 application and am simply using the Facebook.Samples.MvcFacebookApp Project and replacing and adding classes and files as I see fit for my situation. However I have come to the point where my site will be running on a Microsoft Azure cloud and I want to abstract the data layer (database) into it's Project. So I went ahead and created a new Project in the solution called BusinessData and added an EntityDataModel to it, so now the solution looks like this:
1)
Samples -> Facebook.Samples ...
2)
Tests -> Facebook.Tests ...
3)
Facebook Project
Facebook.Web Project
Facebook.Web.Mvc Project
BusinessData Project
-> Business.edmx
Great so now I add a reference to the BusinessData Project to my Facebook.Samples.MvcFacebookApp Project and try and access my database. However I get this error in my TrackUserAttribute.cs class in the Facebook.Samples.MvcFacebookApp Project:
System.MethodAccessException occurred
Message=Attempt by security transparent method 'Facebook.Samples.MvcFacebookApp.Models.TrackUserAttribute..ctor()' to access security critical method 'BusinessData.BusinessEntities..ctor()' failed.
Assembly 'Facebook.Samples.MvcFacebookApp, Version=4.0.2.0, Culture=neutral, PublicKeyToken=null' is marked with the AllowPartiallyTrustedCallersAttribute, and uses the level 2 security transparency model. Level 2 transparency causes all methods in AllowPartiallyTrustedCallers assemblies to become security transparent by default, which may be the cause of this exception.
Source=Facebook.Samples.MvcFacebookApp
StackTrace:
at Facebook.Samples.MvcFacebookApp.Models.TrackUserAttribute..ctor() in C:\Users\rkara\Desktop\FacebookPazooza\ThuziFacebookSDK\Source\Src\Facebook.Samples.MvcFacebookApp\Models\TrackUserAttribute.cs:line 13
InnerException:
After some uneventful research and not being fully understood about CAS Policy and how that has evolved with ASP.Net 4.0 my understanding is that the GlobalAssemblyInfo.cs file contained within all of the projects of the FacebookSDK solution has something to do with it.
This line of code in the GlobalAssemblyInfo.cs file:
#if !(SILVERLIGHT || TESTS)
[assembly: AllowPartiallyTrustedCallers]
#endif
seems to be the culprit. According to this Microsoft expert:
http://www.simple-talk.com/dotnet/.net-framework/whats-new-in-code-access-security-in-.net-framework-4.0---part-i/
BusinessData has SecurityCritical level privileges. My class TrackUserAttribute.cs only has SecurityTransparent, so therefore cannot does not have privileges to invoke methods in the BusinessData assembly. Is this correct?
I've tried all sorts of things to get this thing to work even removing [assembly: AllowPartiallyTrustedCallers] from the GlobalAssemblyInfo.cs file, but I get another problem with the .edmx file itself saying it can't load the metadata, so I assume it still has something to do with full trust privileges etc.
I am sure there is a simple answer to this and am sure the guys who developed this SDK wrapper would have consider the fact that people will be extending their SDK to suit individual needs.
What is the best approach for me to ensure abstraction of my data and anything else I want to abstract without having to tie it into the projects provided?
For now and to continue with development and not be tied up in this for too long I've just stored my entity model (edmx) into the models folder of the Facebook.Samples.MvcFacebookApp. This works for now but I would much rather store the edmx in its own project.
Cheers
Rob
Ok so after I left that problem and moved onto installing log4net as a event logger for my application I came across this site:
http://it.toolbox.com/blogs/daniel-at-work/using-log4net-in-cnet-26794
Essentially I wanted to convert log4net to asp.net 4.0 rather than 1.0/2.0 that it was originally written in. Then after reading through this guys instructions on how he got the old log4net code to work in 4.0 the aha! moment came. Essentially all he needed to do was to put this attribute into his AssemblyInfo.cs file:
[assembly: AllowPartiallyTrustedCallers]
So I did the same for my BusinessData project and updated the AssemblyInfo.cs file there, and hey presto it worked!
After some deep contemplation I figured that what this did was allow my Facebook.Samples.MvcFacebookApp partial privileges to call a SecurityCritical assembly including those objects contained within it. Thus I could go ahead now and call my edmx (EntityDataModel) in this assembly from the Mvc application.
The second fix and is not fully known why this is necessary but it fixes the problem is to copy the connection string from the App.config file to the Web.config file in the Mvc application. For some reason the edmx seemed to try to read from the web.config instead of the App.config for the connection string. So now I have the same connection string in the App.config and Web.config file.
Meh! it works and I'm happy ... moving on!
:-D