from django.utils.encoding import force_text
from django.utils.text import slugify
try:
from rest_framework.serializers import ManyRelatedField
except ImportError:
ManyRelatedField = type(None)
try:
from rest_framework.serializers import ListSerializer
except ImportError:
ListSerializer = type(None)
def get_related_field(field):
if isinstance(field, ManyRelatedField):
return field.child_relation
if isinstance(field, ListSerializer):
return field.child
return field
def is_related_many(field):
if hasattr(field, "many"):
return field.many
if isinstance(field, ManyRelatedField):
return True
if isinstance(field, ListSerializer):
return True
return False
def model_from_obj(obj):
model = getattr(obj, "model", None)
if model is not None:
return model
queryset = getattr(obj, "queryset", None)
if queryset is not None:
return queryset.model
return None
def model_to_resource_type(model):
'''Return the verbose plural form of a model name, with underscores
Examples:
Person -> "people"
ProfileImage -> "profile_image"
'''
if model is None:
return "data"
return force_text(model._meta.verbose_name_plural)
#
# String conversion
#
def camelcase(string):
'''Return a string in lowerCamelCase
Examples:
"people" -> "people"
"profile images" -> "profileImages"
'''
out = slug(string).replace('-', ' ').title().replace(' ', '')
return out[0].lower() + out[1:]
def slug(string):
'''Return a string where words are connected with hyphens'''
return slugify(force_text(string))
def snakecase(string):
'''Return a string where words are connected with underscores
Examples:
"people" -> "people"
"profile images" -> "profile_images"
'''
return slug(string).replace('-', '_')
