From 6103b4990025656a649caad641abb135941f6bf4 Mon Sep 17 00:00:00 2001 From: Tim Graham Date: Thu, 28 Jan 2016 12:47:08 -0500 Subject: [PATCH] [1.9.x] Fixed #25917 -- Clarified reversibility of RemoveField. Thanks kaifeldhoff for the draft patch. Backport of 55481bcdeef43ef5e345f8ea3bae87f4a8ec7bb8 from master --- docs/ref/migration-operations.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/docs/ref/migration-operations.txt b/docs/ref/migration-operations.txt index de7c6cc9eb..e08984e3a8 100644 --- a/docs/ref/migration-operations.txt +++ b/docs/ref/migration-operations.txt @@ -163,9 +163,11 @@ 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 ----------