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| author | Tim Graham <timograham@gmail.com> | 2016-01-28 12:47:08 -0500 |
|---|---|---|
| committer | Tim Graham <timograham@gmail.com> | 2016-01-28 12:47:08 -0500 |
| commit | 55481bcdeef43ef5e345f8ea3bae87f4a8ec7bb8 (patch) | |
| tree | 22ed1f6c04a8c737b1b231df2e49cc73d0b6a6b1 | |
| parent | 5b2e11e574dcc84d3d10efa3ee45c25f97faca5e (diff) | |
Fixed #25917 -- Clarified reversibility of RemoveField.
Thanks kaifeldhoff for the draft patch.
| -rw-r--r-- | docs/ref/migration-operations.txt | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/docs/ref/migration-operations.txt b/docs/ref/migration-operations.txt index 6255176f80..0e087b02e8 100644 --- a/docs/ref/migration-operations.txt +++ b/docs/ref/migration-operations.txt @@ -157,9 +157,11 @@ RemoveField Removes a field from 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 -from any data loss, which of course is irreversible). +Bear in mind that when reversed, this is actually adding a field to a model. +The operation is reversible (apart from any data loss, which of course is +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 ---------- |
