Introspected database constraints instead of relying on _meta.related_objects
to determine whether or not a table or a column is referenced on rename
operations.
This has the side effect of ignoring both db_constraint=False and virtual
fields such as GenericRelation which aren't backend by database level
constraints and thus shouldn't prevent the rename operations from being
performed in a transaction.
Regression in 095c1aaa89.
Thanks Tim for the additional tests and edits, and Mariusz for the review.
* Added the index name to its deconstruction.
* Added indexes to sqlite3.schema._remake_table() so that indexes
aren't dropped when _remake_table() is called.
Thanks timgraham & MarkusH for review and advice.
Field.rel is now deprecated. Rel objects have now also remote_field
attribute. This means that self == self.remote_field.remote_field.
In addition, made the Rel objects a bit more like Field objects. Still,
marked ManyToManyFields as null=True.
Table alterations in SQLite require creating a new table and copying
data over from the old one. This change ensures that no Django model
ever exists with the temporary table name as its db_table attribute.
Also fixes a slight issue in sqlite3.schema._remake_table where
default values where quoted with "column name" quoting rules.
Reference for quoting: http://www.sqlite.org/lang_expr.html
Thanks Shai Berger for the review. Refs #22424.
Changed the migration autodetector to remove models last so that FK
and M2M fields will not be left as dangling references. Added a check
in the migration state renderer to error out in the presence of
dangling references instead of leaving them as strings. Fixed a bug
in the sqlite backend to handle the deletion of M2M fields with
"through" models properly (i.e., do nothing successfully).
Thanks to melinath for report, loic for tests and andrewgodwin and
charettes for assistance with architecture.
Changed the migration autodetector to remove models last so that FK
and M2M fields will not be left as dangling references. Added a check
in the migration state renderer to error out in the presence of
dangling references instead of leaving them as strings. Fixed a bug
in the sqlite backend to handle the deletion of M2M fields with
"through" models properly (i.e., do nothing successfully).
Thanks to melinath for report, loic for tests and andrewgodwin and
charettes for assistance with architecture.
Ian Foote
Simon Charette
Дилян Палаузов
Sergey Fedoseev
Claude Paroz
Jon Dufresne
Anton Samarchyan
chillaranand
Akshesh
akki
Philip Liberato
Alex Hill
Tim Graham
Sagar Mittal
Milan Broum
Anssi Kääriäinen
Loic Bistuer
Andriy Sokolovskiy
Daniel Pyrathon
Markus Holtermann
Florian Apolloner
Andrew Godwin
Raphaël Barrois
Andrew Gorcester
Daniel Hahler