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Added docs example for manually creating a column with RunSQL.

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Gen1us2k 2015-12-15 19:06:33 +06:00 committed by Tim Graham
parent 692d055890
commit a1d0c60fa0
1 changed files with 12 additions and 1 deletions
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13
docs/ref/migration-operations.txt
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@ -231,7 +231,18 @@ equivalent to the SQL in terms of project state; for example, if you are
manually creating a column, you should pass in a list containing an ``AddField`` manually creating a column, you should pass in a list containing an ``AddField``
operation here so that the autodetector still has an up-to-date state of the operation here so that the autodetector still has an up-to-date state of the
model (otherwise, when you next run ``makemigrations``, it won't see any model (otherwise, when you next run ``makemigrations``, it won't see any
operation that adds that field and so will try to run it again). operation that adds that field and so will try to run it again). For example::
migrations.RunSQL(
"ALTER TABLE musician ADD COLUMN name varchar(255) NOT NULL;",
state_operations=[
migrations.AddField(
'musician',
'name',
models.CharField(max_length=255),
),
],
)
The optional ``hints`` argument will be passed as ``**hints`` to the The optional ``hints`` argument will be passed as ``**hints`` to the
:meth:`allow_migrate` method of database routers to assist them in making :meth:`allow_migrate` method of database routers to assist them in making