rst sucks

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Manuel Francisco Naranjo 2015-07-27 16:38:06 -03:00
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====================
django-database-view
====================
A simple pluggable application that allows to work with database views.
So far only MySQL is supported as backend, but more could be added if necessary.
Quick start
-----------
1. Add "dbview" to your INSTALLED_APPS settings like this::
INSTALLED_APPS = (
...
'dbview',
)
2. In your models.py create classes which extend dbview.models.DbView
like this::
.. code-block:: python
from django.db import models
from dbview.models import DbView
class ModelA(models.Model):
fielda = models.CharField()
fieldc = models.IntegerField()
class MyView(DbView):
fieldA = models.OneToOneField(ModelA, primary_key=True,
db_column='fielda__id')
fieldB = models.IntegerField(blank=True, null=True, db_column='fieldb')
@classmethod
def view(klass):
'''
This method returns the SQL string that creates the view, in this
example fieldB is the result of annotating another column
'''
qs = modelA.objects.all().\
annotate(fieldb=models.Sum('fieldc')) .\
annotate(fielda__id=models.F('pk')) .\
order_by('fielda__id') .\
values('fielda__id', 'fieldb')
return str(qs.query)
3. Then create a migration point for your view generation, edit that migration
and modify it, add: `from dbview.helpers import CreateView` and replace the line
the call to migrations.CreateModel with CreateView.
4. Migrate your database and start using your database views.