According to Django documentation it's possible. filter_horizontal is
supposed to extend to InlineModelAdmin. But I've been at a pretty bad
stopping point of not knowing the syntax for how to get this to work, and
not being able to even find an example of someone doing this.
I have a model called Statement. Statement has an m2m relationships with
another model called Keywords. In other words, each statement has a set of
keywords. and I'm trying to change its change/add page by allowing one to
be able to modify the keywords associated with a Statement.
However, when I design admin.py like this and run python manage.py
makemigrations, I get the error at the bottom. statements is a m2m field
within Keywords, so I'm not really sure what to do at this point. I've been
trying a lot of variants but nothing's really working and I don't
understand where to begin.
class KeywordInline(admin.TabularInline):
model = Keyword.statement.through
filter_horizontal = ('statement',)
class KeywordAdmin(admin.ModelAdmin):
inlines = [KeywordInline,]
class StatementAdmin(admin.ModelAdmin):
inlines = [ KeywordInline,]
SystemCheckError: System check identified some issues:
ERRORS:
<class 'gtr_site.admin.KeywordInline'>: (admin.E020) The value of
'filter_horizontal[0]' must be a many-to-many field.
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