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Update Row if it Exists Else Insert Logic with Entity Framework
...t) you can simply use:
if (context.ObjectStateManager.GetObjectStateEntry(myEntity).State == EntityState.Detached)
{
context.MyEntities.AddObject(myEntity);
}
// Attached object tracks modifications automatically
context.SaveChanges();
If you can use any knowledge about the object's key you...
Where are the PostgreSQL logs on macOS?
I would like to take a look at the PostgreSQL log files to see what my app writes to them but I can't find them.
8 Answers
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Ruby on Rails: Where to define global constants?
I'm just getting started with my first Ruby on Rails webapp. I've got a bunch of different models, views, controllers, and so on.
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Problems with contenttypes when loading a fixture in Django
I am having trouble loading Django fixtures into my MySQL database because of contenttypes conflicts. First I tried dumping the data from only my app like this:
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Error: Configuration with name 'default' not found in Android Studio
...erform network operation in android. So I am trying to add this library in my project which is created in Android Studio and gradle system.
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Why is the console window closing immediately once displayed my output?
... This option is available for me in VS2017 15.9.4 but it's not working for my .net core 2.1 console application...
– user1073075
Jul 31 '19 at 13:47
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Android DialogFragment vs Dialog
...would be various ways of doing it but I simply define a message Handler in my Fragment, pass it into the DialogFragment via its constructor and then pass messages back to my fragment's handler as approprirate on the various click events. Again various ways of doing that but the following works for m...
Javascript Drag and drop for touch devices [closed]
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Thanks, on my Android device stuff is now draggable. However, the click event is not fired anymore when I click on it. Any ideas how to fix that?
– John Landheer
Dec 2 '11 at 8:58
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Renaming table in rails
...why the previous line didn't though. Oh well..
– Tommy
Jan 8 '11 at 0:55
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Core dumped, but core file is not in the current directory?
... very strange things happenning. when i use dup2 of stderr and stdout into my custom file(applog.txt), Data which i am writing into other file(mycore.BIN) is being redirected to file which i have used to catch stdout & stderr(applog.txt). Is there a good read about this one? Please suggest. Than...