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MySQL Error 1215: Cannot add foreign key constraint
I am trying to forward engineer my new schema onto my db server, but I can't figure out why I am getting this error. I've tried to search for the answer here, but everything I've found has said to either set the db engine to Innodb or to make sure the keys I'm trying to use as a foreign key are pri...
Count Rows in Doctrine QueryBuilder
...You can borrow from Doctrine\ORM\Tools\Pagination\Paginator:
$paginator = new \Doctrine\ORM\Tools\Pagination\Paginator($query);
$totalRows = count($paginator);
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Best practice to return errors in ASP.NET Web API
...p.net/fredriknormen/asp-net-web-api-exception-handling
(this one has some new features in the nightly builds)
https://docs.microsoft.com/archive/blogs/youssefm/error-handling-in-asp-net-webapi
Update 2
Update to our error handling process, we have two cases:
For general errors like not found, ...
Changing ImageView source
...setImageDrawable(getResources().getDrawable(R.drawable.monkey));
*** With new android API 22 getResources().getDrawable() is now deprecated. This is an example how to use now:
myImgView.setImageDrawable(getResources().getDrawable(R.drawable.monkey, getApplicationContext().getTheme()));
and how to ...
I lose my data when the container exits
...should be used only when you make CHANGES in the container(like installing new tools or data) so that those changes are saved and the next time when you run a new container from that Image, it will start from the point of last save or commit, preserving your data.
– Unferth
...
Eclipse syntax highlighting preferences save and restore
...had also chosen a different font or font size, you can carry these to your new workbench by also copying org.eclipse.ui.workbench.prefs and org.eclipse.wst.jsdt.ui.prefs. Tested from Android Developer Tools to Eclipse Kepler 4.3 in Feb 2014.
– Calaf
Feb 21 '14 ...
Is it possible to use raw SQL within a Spring Repository
...(queryStr);
query.setParameter(1, rollNo);
return new UserObject((Object[]) query.getSingleResult());
} catch (Exception e) {
e.printStackTrace();
throw e;
}
}
Here you have to import bellow packages:
import javax.persistence.Qu...
Compare JavaScript Array of Objects to Get Min / Max
... This makes sense, I've been stuck with thinking about comparing data inside the array to each other instead of an external high/low number.
– firedrawndagger
Jan 14 '12 at 19:01
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MySQL Cannot drop index needed in a foreign key constraint
...umn. Consequently I also want to update the UNIQUE field to encompass that new column. I'm trying to remove the current index but keep getting the error MySQL Cannot drop index needed in a foreign key constraint
...
How do I detect “shift+enter” and generate a new line in Textarea?
...t gave error that carent is not defined, if i change it to caret it adds 2 new lines
– Aamir Mahmood
Aug 14 '12 at 18:54
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