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[1.9.x] Fixed #25917 -- Clarified reversibility of RemoveField.

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Thanks kaifeldhoff for the draft patch.

Backport of 55481bcdeef43ef5e345f8ea3bae87f4a8ec7bb8 from master
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Tim Graham 2016-01-28 12:47:08 -05:00
parent ca6830c49f
commit 6103b49900
1 changed files with 5 additions and 3 deletions
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docs/ref/migration-operations.txt
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@ -163,9 +163,11 @@ RemoveField
Removes a field from a model. Removes a field from a model.
Bear in mind that when reversed this is actually adding a field to a model; Bear in mind that when reversed, this is actually adding a field to a model.
if the field is not nullable this may make this operation irreversible (apart The operation is reversible (apart from any data loss, which of course is
from any data loss, which of course is irreversible). irreversible) if the field is nullable or if it has a default value that can be
used to populate the recreated column. If the field is not nullable and does
not have a default value, the operation is irreversible.
AlterField AlterField
---------- ----------