cascade | A Just-In-Time Compiler for Verilog from VMware Research | Compiler library

You can make Image objects in bulk as well, with:

You should have those two indexes to speed up your query :

You are better off avoiding serializable isolation level. The way the serializable guarantee is provided is often deadlock prone.

If you can't alter your stored procs to use more targeted locking hints that guarantee the results you require at a lesser isolation level then you can prevent this particular deadlock scenario shown by ensuring that all locks are taken out on ServiceChange first before any are taken out on ServiceChangeParameter.

One way of doing this would be to introduce a table variable in spGetManageServicesRequest and materialize the results of

Yes, there are multiple builtin handlers for the on_delete=… parameter [Django-doc]. The documentation specifies:

• CASCADE Cascade deletes. Django emulates the behavior of the SQL constraint ON DELETE CASCADE and also deletes the object containing the ForeignKey. (…)

• PROTECT: Prevent deletion of the referenced object by raising ProtectedError, a subclass of django.db.IntegrityError.

• RESTRICT: Prevent deletion of the referenced object by raising RestrictedError (a subclass of django.db.IntegrityError). Unlike PROTECT, deletion of the referenced object is allowed if it also references a different object that is being deleted in the same operation, but via a CASCADE relationship. (…)

• SET_NULL: Set the ForeignKey null; this is only possible if null is True.

• SET_DEFAULT: Set the ForeignKey to its default value; a default for the ForeignKey must be set.

• SET(…): Set the ForeignKey to the value passed to SET(), or if a callable is passed in, the result of calling it. (…)

• DO_NOTHING: Take no action. If your database backend enforces referential integrity, this will cause an IntegrityError unless you manually add an SQL ON DELETE constraint to the database field.

Furthermore you can also write your own handler for the on_delete=… parameter. For example in this article, I discuss implementing a handler that is to some extent the same as a SET(…) but the callable it uses accepts as parameter the object that should be updated.

In the "early days", django-1.8 and prior, you did not have to set an on_delete=… parameter: CASCADE was used as default value. But this makes it rather implicit what should happen in case the referenced object is removed, so later they made the parameter mandatory.

You can create your own TextInput and TypedModelListField field to handle this. I think what you're looking for is something which allows the user to both search and provide a recommended selection of choices but validate the input against a model (Ingredient).

I've created one here:

Using Method 2, your where clause should be

Here is my approach on how to overcome the multiple queries being made.

You're missing the CSRF token in your form which is causing the error.

You should add the CSRF token in your form and send it with the post request.

Add @csrf within the

The read_only_fields meta option will work for the fields which are not explicitly defined in the Serializer.

So, in your case, you need to add the read_only=True to those explicitly defined fields, as