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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.
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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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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...
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...
HTML table with fixed headers?
...ng'), 160); // 160 is height
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<div style="width:300px;border:6px green solid;">
<table border="1" width="100%" id="tblNeedsScrolling">
<thead>
<tr><t...
Entity Framework - Start Over - Undo/Rollback All Migrations
...r. I'm at the point where I just want to start over, so is there a way to completely undo all migrations, erase the history, and delete the migration code, so I'm back to square one?
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Generate table relationship diagram from existing schema (SQL Server) [closed]
...cified the references in your tables properly. You will be able to see the complete diagram of selected tables.
For further reference see Getting started with SQL Server database diagrams
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How to run Nginx within a Docker container without halting?
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