I would like my django application to serve a list of any model's fields (this will help the GUI build itself).
Imagine the classes (ignore the fact that all field of Steps
could be in Item
, I have my reasons :-) )
class Item(models.Model):
name = models.CharField(max_length=100)
description = models.TextField()
class Steps(models.Model):
item = models.OneToOneField('Item', related_name='steps')
design = models.BooleanField(default=False)
prototype = models.BooleanField(default=False)
production = models.BooleanField(default=False)
Now, when I want to list a model's fields:
def get_fields(model):
return model._meta.fields + model._meta.many_to_many
But I would also like to get the list of "related" one-to-one foreign keys to my models. In my case Item.steps
would not be in that list.
I have found that model._meta.get_all_field_names
does include all the related fields.
But when I call Item._meta.get_field_by_name('steps')
it returns a tuple holding a RelatedObject
, which does not tell me instantly whether this is a single relation or a one-to-many (I want to list only reversed one-to-one relations).
Also, I can use this bit of code:
from django.db.models.fields.related import SingleRelatedObjectDescriptor
reversed_f_keys = [attr for attr in Item.__dict__.values()
if isinstance(attr, SingleRelatedObjectDescriptor)]
But I'm not very satisfied with this.
Any help, idea, tips are welcome!
Cheers
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