Hey everyone,
A quick issue I ran into today, my generated migrations weren’t detecting any of the models I’d added – only changes to existing models. Unfortunately the solution was so obvious that it didn’t even come up on Google.
I had forgotten to add the table to the DBContext file… Once this was done it all worked fine.
Hey everyone,
Just another quick post for fixing the following error in a multi-project solution:
Simply right click on the project that you want to start and select “Set as StartUp Project”.
Hey everyone,
I ran into the following error this morning:
It turns out there are a few causes for this. My issue was that I was attempting to open a result set while already iterating over another one.
//Retrieve list of cart products and create list of suborders
var cartProducts = db.CartProducts.Where(cartProduct => cartProduct.CartId == userOrder.CartId);
//Loop through each cart product
foreach(var cartProduct in cartProducts)
{
//Retrieve suborder
SubOrder subOrder = subOrders.Find(x => x.BusinessId == cartProduct.Product.BusinessId);
The solution to this was pretty easy thankfully. Simply add “ToList()” to the end of the initial request:
//Retrieve list of cart products and create list of suborders var cartProducts = db.CartProducts.Where(cartProduct => cartProduct.CartId == userOrder.CartId).ToList();
An alternative solution is to modify your connection string in order to allow multiple result multiple result sets. Simply add the following to provider part:
MultipleActiveResultSets=true
Checkout these StackOverflow posts for more info:
http://stackoverflow.com/a/10498776/522859
http://stackoverflow.com/a/6064422/522859
Hey everyone,
I am working on a small project done in ASP.NET MVC4 and started getting the following error:
Get-Package : Cannot validate argument on parameter ‘ProjectName’. The argument is null or empty. Supply an argument that is not null or empty and then try the command again.
At C:SitesLearnerLessonspackagesEntityFramework.5.0.0toolsEntityFramework.psm1:611 char:40
+ $package = Get-Package -ProjectName <<<< $project.FullName | ?{ $_.Id -eq 'EntityFramework' }
+ CategoryInfo : InvalidData: (:) [Get-Package], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationError,NuGet.PowerShell.Commands.GetPackageCommand
The confusing thing was that I’d used it no more than an hour ago. The following StackOverflow post reveals the issue (and the fact that I should’ve read the error more carefully):
http://stackoverflow.com/a/14708897/522859
All I needed to do was select the correct project from the “Default Project” dropdown in the Package Manager Console:
Hey everyone,
Just another small issue I ran into while attempting to retrieve a user’s ID:
Thankfully the first Google result was pretty helpful: http://stackoverflow.com/a/15864133/522859
All you need to do is remove [InitializeSimpleMembership] from the top of the AccountController and then add the following line to App_Start/AuthConfig.cs
WebSecurity.InitializeDatabaseConnection("DefaultConnection", "UserProfile", "UserId", "UserName", autoCreateTables: true);
Hey everyone,
I’ve decided to take a look MVC4 (C#) and have just started the Movies tutorial. Unfortunately I ran into a bit of trouble with the database setup, for some reason mine wasn’t appearing in the app_data folder.
Apparently there are a few things you can try here:
Click Show All Files
This one is pretty simple, just click Show All Files
– Project > Show All Files
Refresh
Hit the refresh button
– Project > Refresh
Ensure that you’ve created a movie
You’ll need to make sure you’ve created a movie first. Apparently the database is not created until after a new row is inserted.
Final Solution, also the one that worked for me
The database wasn’t actually created under app_data, instead it was placed under: C:Program FilesMicrosoft SQL ServerMSSQL10_50.SQLEXPRESSMSSQLDATA
This StackOverflow post explains why: asp-net-retrieving-data-from-nowhere
Hey everyone,
I use incognito mode at work as a quick test for cookie/caching issues. I ran into a bit of an issue with it this morning after an MOE update yesterday. Using the shortcut (ctrl + shift + n) did nothing, and the tools option showed incognito mode greyed out.
After a bit of Googling I came across a registry value that had been added to prevent incognito mode. The fix for this is pretty simple, just remove the value. There are a few variations on this so you may have to do a bit of digging to find which one has been added to your machine (Run > regedit or C:Windowsregedit.exe).
One additonal note, my unwanted registry key was added during the login process each time I removed it. A quick way around this is to do up a quick batch script to remove it. Just modify my one below to include your registry key and throw it in your startup folder:
reg delete HKEY_LOCAL_MACHINESOFTWAREPoliciesGoogleChrome /v IncognitoModeAvailability /f
Hey everyone,
I’ve just added pagination (Kaminari) to make an infinite scroll list a little easier to use. Unfortunately, I ran into the following error – had me stumped for a while:
Missing partial /contents/content_list_item with {:locale=>[:en], :formats=>[:json], :handlers=>[:erb, :builder, :coffee]}. Searched in: * "/home/chris/funny/app/views" * "/home/chris/.rvm/gems/ruby-1.9.3-p327/gems/kaminari-0.14.1/app/views"
The solution was fairly simple, but adding a few things at once had me looking at it the wrong way. Because I was using the same nested partials for an HTML response as my JSON one, the file extensions weren’t what rails was expecting. To get around this, all I needed to do was fully qualify the partial filenames. For instance:
#The original
'/contents/content_list_item', :locals => { :@content_item => content} %>
#Became this
'/contents/content_list_item.html.erb', :locals => { :@content_item => content} %>
Hey everyone,
Another issue I came across while working with CarrierWave. After rebooting a VM Amazon started too complain “request time too skewed”:
This one is another simple fix, just make sure your system time is correct. I’d been using a VM and it had run forward by a few hours. Setting it back manually resolved the error.
Hey everyone,
After working with CarrierWave for a couple of days a few of my images started disappearing. It took a while to work out what was causing it, but thankfully the fix is pretty easy:
#Set fog_public in your initialiser to true config.fog_public = false #Should be config.fog_public = true
Alternatively, if you’d like them to keep expiring but want to adjust their availability you can use the following config option:
#Number of seconds config.fog_authenticated_url_expiration = 60000
There’s a bit of info in the following StackOverflow post: http://stackoverflow.com/a/13757841/522859
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