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| author | David Wobrock <david.wobrock@gmail.com> | 2022-06-02 12:10:27 +0200 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2022-06-02 12:11:06 +0200 |
| commit | 9fce76a237ddf19e167dcba53815cbfee586b928 (patch) | |
| tree | 8329b86822516d526140dea991e308a52ab6c5b4 /django/db | |
| parent | 0fb0355271518a291584fdbbc3b1f400117d704d (diff) | |
[4.1.x] Fixed #31788 -- Fixed migration optimization after altering field to ManyToManyField.
This makes AddField() used for altering to ManyToManyField, dependent
on the prior RemoveField.
Backport of 798b6c23ee52c675dd0f0e233c50cddd7ff15657 from main
Diffstat (limited to 'django/db')
| -rw-r--r-- | django/db/migrations/autodetector.py | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/django/db/migrations/autodetector.py b/django/db/migrations/autodetector.py index 5f41053283..4bcbae8bd3 100644 --- a/django/db/migrations/autodetector.py +++ b/django/db/migrations/autodetector.py @@ -1022,8 +1022,9 @@ class MigrationAutodetector: def _generate_added_field(self, app_label, model_name, field_name): field = self.to_state.models[app_label, model_name].get_field(field_name) - # Fields that are foreignkeys/m2ms depend on stuff - dependencies = [] + # Adding a field always depends at least on its removal. + dependencies = [(app_label, model_name, field_name, False)] + # Fields that are foreignkeys/m2ms depend on stuff. if field.remote_field and field.remote_field.model: dependencies.extend( self._get_dependencies_for_foreign_key( |