ArrayField querying doesn't work with CharField

[Alexander Schepanovski]

When trying to make query with CharArrayModel.objects.filter(field__contains=['text']) I get:

ProgrammingError: operator does not exist: character varying[] @> text[]
LINE 1: ...el" WHERE "postgres_tests_chararraymodel"."field" @> ARRAY['...
                                                             ^
HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.

[Alexander Schepanovski]

Created a failing test in a pull request ​https://github.com/django/django/pull/2853

[Simon Charette]

I could reproduce with provided test case on PostgreSQL 9.3.4.

Interestingly I'm also getting a failure on postgres_tests.test_array.TestSaveLoad.test_dates:

ProgrammingError: column "field" is of type timestamp with time zone[] but expression is of type text[]
LINE 1: ...tgres_tests_datetimearraymodel" ("field") VALUES (ARRAY['201...
                                                             ^
HINT:  You will need to rewrite or cast the expression.

@Suor Which version of PostgreSQL are you using?

[Aymeric Augustin]

This ticket doesn't block 1.7, probably doesn't block 1.8, and will most likely be fixed by then.

[Marc Tamlyn]

PR: ​https://github.com/django/django/pull/2924

[Marc Tamlyn <marc.tamlyn@…>]

In b65a2001e7be3811903fc8769fa4d3df3d324f18:

Fixed #22907 -- Array contains must have same type.