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- class MutableFields(object):
- @classmethod
- def subset_fields(cls, *fields):
- fields_in_name = [f.title().replace('_', '') for f in fields]
- name = '{}{}Subset'.format(cls.__name__, ''.join(fields_in_name)[:100])
- class Meta(cls.Meta):
- pass
- Meta.fields = tuple(fields)
- return type(name, (cls, ), {'Meta': Meta})
- @classmethod
- def exclude_fields(cls, *fields):
- final_fields = []
- for field in cls.Meta.fields:
- if field not in fields:
- final_fields.append(field)
- fields_in_name = [f.title().replace('_', '') for f in final_fields]
- name = '{}{}Subset'.format(cls.__name__, ''.join(fields_in_name)[:100])
- class Meta(cls.Meta):
- pass
- Meta.fields = tuple(final_fields)
- return type(name, (cls, ), {'Meta': Meta})
- @classmethod
- def extend_fields(cls, *fields):
- final_fields = list(cls.Meta.fields)
- for field in fields:
- if field not in final_fields:
- final_fields.append(field)
- fields_in_name = [f.title().replace('_', '') for f in final_fields]
- name = '{}{}Subset'.format(cls.__name__, ''.join(fields_in_name)[:100])
- class Meta(cls.Meta):
- pass
- Meta.fields = tuple(final_fields)
- return type(name, (cls, ), {'Meta': Meta})
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