Django: Get list of model fields?
I've defined a User class which (ultimately) inherits from models.Model . I want to get a list of all the fields defined for this model. For example, phone_number = CharField(max_length=20) . Basically, I want to retrieve anything that inherits from the Field class.
I thought I'd be able to retrieve these by taking advantage of inspect.getmembers(model) , but the list it returns doesn't contain any of these fields. It looks like Django has already gotten a hold of the class and added all its magic attributes and stripped out what's actually been defined. So... how can I get these fields? They probably have a function for retrieving them for their own internal purposes?
For Django versions 1.8 and later:
The get_all_field_names() method is deprecated starting from Django 1.8 and will be removed in 1.10.
The documentation page linked above provides a fully backwards-compatible implementation of get_all_field_names() , but for most purposes [f.name for f in MyModel._meta.get_fields()] should work just fine.
For Django versions before 1.8:
model._meta.get_all_field_names()
That should do the trick.
That requires an actual model instance. If all you have is a subclass of django.db.models.Model , then you should call myproject.myapp.models.MyModel._meta.get_all_field_names()
The get_all_related_fields() method mentioned herein has been deprecated in 1.8. From now on it's get_fields() .
>> from django.contrib.auth.models import User
>> User._meta.get_fields()
I find adding this to django models quite helpful:
def __iter__(self):
for field_name in self._meta.get_all_field_names():
value = getattr(self, field_name, None)
yield (field_name, value)
This lets you do:
for field, val in object:
print field, val
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