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| author | Andrew Gorcester <andrew.gorcester@gmail.com> | 2014-02-19 15:44:57 -0800 |
|---|---|---|
| committer | Baptiste Mispelon <bmispelon@gmail.com> | 2014-02-23 09:30:02 +0100 |
| commit | 202bf69c2f69d9ee20ac3fd409116a8946dc0784 (patch) | |
| tree | 288eebf79d7982677fa230d349db7639b8dccdcb /django/db | |
| parent | b8874084868080baff29ac3453d20a845fd1568c (diff) | |
Fixed #22095 -- Enabled backward migrations for RunPython operations
Added reversible property to RunPython so that migrations will not
refuse to reverse migrations including RunPython operations, so long as
reverse_code is set in the RunPython constructor. Included tests to
check the reversible property on RunPython and the similar RunSQL.
Diffstat (limited to 'django/db')
| -rw-r--r-- | django/db/migrations/operations/special.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/django/db/migrations/operations/special.py b/django/db/migrations/operations/special.py index 714a6d59f9..40ae1f85b7 100644 --- a/django/db/migrations/operations/special.py +++ b/django/db/migrations/operations/special.py @@ -103,7 +103,6 @@ class RunPython(Operation): """ reduces_to_sql = False - reversible = False def __init__(self, code, reverse_code=None): # Forwards code @@ -118,6 +117,10 @@ class RunPython(Operation): raise ValueError("RunPython must be supplied with callable arguments") self.reverse_code = reverse_code + @property + def reversible(self): + return self.reverse_code is not None + def state_forwards(self, app_label, state): # RunPython objects have no state effect. To add some, combine this # with SeparateDatabaseAndState. |