def return_related(instance, related_field):
"""
This functions works in a similar method to return_attrib but is
meant for related models. Support multiple levels of relationship
using double underscore.
"""
return reduce_function(getattr, related_field.split('__'), instance)
def return_related(instance, related_field):
"""
This functions works in a similar method to return_attrib but is
meant for related models. Support multiple levels of relationship
using double underscore.
"""
return reduce_function(getattr, related_field.split('__'), instance)
def return_attrib(obj, attrib, arguments=None):
if isinstance(attrib, types.FunctionType):
return attrib(obj)
elif isinstance(obj, dict_type) or isinstance(obj, dictionary_type):
return obj[attrib]
else:
result = reduce_function(getattr, attrib.split('.'), obj)
if isinstance(result, types.MethodType):
if arguments:
return result(**arguments)
else:
return result()
else:
return result
def return_attrib(obj, attrib, arguments=None):
if isinstance(attrib, types.FunctionType):
return attrib(obj)
elif isinstance(
obj, dict_type
) or isinstance(obj, dictionary_type):
return obj[attrib]
else:
result = reduce_function(getattr, attrib.split('.'), obj)
if isinstance(result, types.MethodType):
if arguments:
return result(**arguments)
else:
return result()
else:
return result
def return_attrib(obj, attrib, arguments=None):
try:
if isinstance(attrib, types.FunctionType):
return attrib(obj)
elif isinstance(obj, dict_type) or isinstance(obj, dictionary_type):
return obj[attrib]
else:
result = reduce_function(getattr, attrib.split('.'), obj)
if isinstance(result, types.MethodType):
if arguments:
return result(**arguments)
else:
return result()
else:
return result
except Exception as exception:
if settings.DEBUG:
return 'Attribute error: %s; %s' % (attrib, exception)
else:
return force_text(exception)
def return_attrib(obj, attrib, arguments=None):
try:
if isinstance(attrib, types.FunctionType):
return attrib(obj)
elif isinstance(
obj, dict_type
) or isinstance(obj, dictionary_type):
return obj[attrib]
else:
result = reduce_function(getattr, attrib.split('.'), obj)
if isinstance(result, types.MethodType):
if arguments:
return result(**arguments)
else:
return result()
else:
return result
except Exception as exception:
if settings.DEBUG:
return 'Attribute error: %s; %s' % (attrib, exception)
else:
return force_text(exception)
def resolve_attribute(attribute, obj, kwargs=None):
"""
Resolve the attribute of an object. Behaves like the Python REPL but with
an unified dotted path schema regardless of the attribute type.
Supports callables, dictionaries, properties, related model fields.
"""
if not kwargs:
kwargs = {}
# Try as a callable
try:
return attribute(obj, **kwargs)
except TypeError:
# Try as a dictionary
try:
return obj[attribute]
except TypeError:
try:
# If there are dots in the attribute name, traverse them
# to the final attribute
result = reduce_function(getattr, attribute.split('.'), obj)
try:
# Try it as a method
return result(**kwargs)
except TypeError:
# Try it as a property
return result
except AttributeError:
# Try as a related model field
if LOOKUP_SEP in attribute:
attribute_replaced = attribute.replace(LOOKUP_SEP, '.')
return resolve_attribute(obj=obj,
attribute=attribute_replaced,
kwargs=kwargs)
else:
raise