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Default value for field in Django model
...ble to False and default to your default value.
http://docs.djangoproject.com/en/stable/ref/models/fields/#editable
b = models.CharField(max_length=7, default='0000000', editable=False)
Also, your id field is unnecessary. Django will add it automatically.
...
Understanding promises in Node.js
...y two events: success and error.
The cool thing about promises is you can combine them into dependency chains (do Promise C only when Promise A and Promise B complete).
By removing them from the core node.js, it created possibility of building up modules with different implementations of promises ...
How to Sign an Already Compiled Apk
... this should be the answer, 27 upvotes versus 3 to the original answer, come on!
– Kyle
Nov 4 '15 at 10:12
1
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ListBox vs. ListView - how to choose for data binding
...filter based on user input. The data binding demo ( http://msdn.microsoft.com/en-us/library/ms771319.aspx ) uses a ListBox with a CollectionViewSource.
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Filtering for empty or NULL names in a queryset
...ield = TRUE AND other_field = TRUE)
Alternatively, if your logic is more complex than that, you could use Django's Q objects:
from django.db.models import Q
Name.objects.exclude(Q(alias__isnull=True) | Q(alias__exact=''))
For more info see this page and this page in the Django docs.
As an asid...
How do I correctly clone a JavaScript object?
...appy to be wrong!
When I had to implement general deep copying I ended up compromising by assuming that I would only need to copy a plain Object, Array, Date, String, Number, or Boolean. The last 3 types are immutable, so I could perform a shallow copy and not worry about it changing. I further ass...
Get “Internal error in the expression evaluator” on “Add watch” function when trying to debug WCF se
...d) debug engine that ships with Visual Studio 2013. Try turning on Managed Compatibility Mode (which effectively turns it into pre-2013 debug engine), located under Tools - Options - Debugging:
If this solves the issue, then I'd suggest trying to reproduce it with a small project, and then report...
What's the fastest way to delete a large folder in Windows?
...
Use Windows Command Prompt:
rmdir /s /q folder
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What is the best way to find the users home directory in Java?
... Linux, other unix variants. I am looking for a snippet of code that can accomplish this for all platforms, and a way to detect the platform.
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...ons and is automatically HTMLEncoded.
<%-- --%> - is for server-side comments
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