Models¶

This module contains the functions / classes to get information about Django models or to manipulate them.

get_users_with_permission() - return the queryset of all users who have specified permission string, including all three possible sources of such users (user permissions, group permissions and superusers).
Next functions allow to use parts of queryset functionality on single Django model object instances, supporting spanned relationships without the field lookups:
- get_related_field_val() / get_related_field() get related field properties from the supplied model instance via fieldname argument string.
- model_values() - get the dict of model fields name / value pairs like queryset .values() for the single model instance supplied.
get_meta() / get_verbose_name() - get meta property of Django model field, including spanned relationships with the related (foreign) and reverse-related fields:
```
get_verbose_name(profile, 'user__username')
get_meta(profile, 'verbose_name_plural', 'user__username')
```
file_exists() - checks whether Diango file field object exists in the related filesystem.
get_object_description() - returns the possibly nested list / dict of django model fields. Uses Model.get_str_fields(), when available, otherwise fallback to Model.__str()__. See get_str_fields model formatting / serialization for more info.
get_app_label_model() - parses dot-separated name of app_label / model (natural key) as returned by contenttypes framework. Can be used to parse request content type argument like this:
```
app_label, model = get_app_label_model(self.request_get('model', ''))
```

get_content_object() - returns content type / content object via contenttypes framework with any valid combination of arguments: object_id, content_type_id, app_label, model. For example, to get the Model instance from the request:

app_label, model = get_app_label_model(self.request_get('model', ''))
object_id = self.request_get('content_object_id', None)
content_type, content_object = get_content_object(object_id=object_id, app_label=app_label, model=model)