Opened 16 years ago
Closed 16 years ago
#7280 closed (invalid)
newforms-admin fields marked "editable=False" raise error when used in "prepoluated_fields"
Reported by: | peschler | Owned by: | nobody |
---|---|---|---|
Component: | contrib.admin | Version: | newforms-admin |
Severity: | Keywords: | newforms-admin editable prepopulated_fields | |
Cc: | Triage Stage: | Unreviewed | |
Has patch: | no | Needs documentation: | no |
Needs tests: | no | Patch needs improvement: | no |
Easy pickings: | no | UI/UX: | no |
Description
Consider the following model and the associated ModelAdmin (shortened for demonstration):
class Menu(models.Model): name = models.CharField(max_length=50, unique=True) slug = models.SlugField(editable=False) # ... class MenuOptions(admin.ModelAdmin): prepopulated_fields = {'slug': ('name',)} display_list = ('name', 'slug',) admin.site.register(Menu, MenuOptions)
The slug
field should not be editable by a user but rather is updated in the
save()
method of the model everytime the name of the menu changes.
Now when I try to open the (newforms) admin page for adding a new Menu instance I get the following error:
KeyError at /admin/newnavigation/menu/add/ "Key 'slug' not found in Form"
The error disappears as soon I exchange "editable=False" with "editable=True" or remove the slug
from the
prepoluated_fields
.
Seems there is a problem when using a field marked editable=False
in the ModelAdmin's
prepopulated_fields
.
In my use case I can simply remove slug
from the
prepopulated_fields
because I populate it manually, but there might be some cases where such a simple fix is not possible.
This is the expected behavior.
prepopulated_fields
requires that the fields you specify in both the key and value tuple to be present in the form.
prepopulated_fields
will not magically write functionality in the your model's
save
method. It provides some Javascript to deal with it on the user interface also allowing the user to override the automatically generated value. Please take this to django-users mailing list and/or #django on freenode.