tickets: 154

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id	created	changetime	last_pulled_from_trac	stage	status	component	type	severity	version	resolution	summary	description	owner	reporter	keywords	easy	has_patch	needs_better_patch	needs_tests	needs_docs	ui_ux
154	2005-07-22 13:10:15	2012-11-27 08:55:38	2022-03-06 03:19:53.212034	Accepted	closed	contrib.admin	defect	normal		fixed	Can't delete object with ManytoMany Relationship	If you have an object with a manytomany relationship you can't delete it within the admin interface. As it spits out this error. {{{ Traceback (most recent call last): File "/home/punteney/dobbes.com/django/core/handlers/modpython.py", line 214, in get_response return callback(request, *param_dict) File "/home/punteney/dobbes.com/django/views/admin/main.py", line 1057, in delete_stage obj.delete() File "/home/punteney/dobbes.com/django/core/meta.py", line 57, in _curried return args[0]((args[1:]+moreargs), **dict(kwargs.items() + morekwargs.items())) File "/home/punteney/dobbes.com/django/core/meta.py", line 760, in method_delete cursor.execute("DELETE FROM %s WHERE %s=%%s" % (opts.db_table, opts.pk.name), [getattr(self, opts.pk.name)]) File "/home/punteney/dobbes.com/django/core/db/base.py", line 10, in execute result = self.cursor.execute(sql, params) IntegrityError: ERROR: update or delete on "blog_entries" violates foreign key constraint "$1" on "blog_entries_categories" DETAIL: Key (id)=(2) is still referenced from table "blog_entries_categories". DELETE FROM blog_entries WHERE id=2 }}} This is from trying to delete a blog entry that is tied to the categories. The line in the Entry model is: {{{ meta.ManyToManyField(Category, filter_interface=meta.HORIZONTAL), }}} I can't remove the category linking before I delete it as it is a required field so it comes back with an error message saying that the field is required.	adrian	Dobbes		0	0	0	0	0	0