ModelAdmin.filter_horizontal should use plural for ManyToManyField

[Roy Smith]

Do something like:

class Regatta(Model):
    boat = ManyToManyField(Boat, blank=True)

class RegattaAdmin(admin.ModelAdmin):
    filter_horizontal = ['boat']

then edit a Regatta in the admin. The picker boxes will have headers "Available Boat" and "Chosen Boat". These should be plural (i.e. "Available Boats", "Chosen Boats"). Likewise for the mouseover help texts.

[Simon Charette]

Semantically speaking I think you should rename your Regatta.boat field to Regatta.boats.

In this case the admin accounts you are already providing a plural name since it represents a M2M relation.

[Roy Smith]

Hmmm. I generally follow the rule that all model names are singular, but I see in the docs it is recommended for django that ManyToMany relationships have plural names (​https://docs.djangoproject.com/en/dev/topics/db/models/#many-to-many-relationships). I'm not sure I agree with that recommendation, but since it is the documented standard, I'll go with it.

Marking this "wontfix".