Python rest_framework.serializers.PrimaryKeyRelatedField() Examples

The following are 1 code examples for showing how to use rest_framework.serializers.PrimaryKeyRelatedField(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
Project: drf-schema-adapter   Author: drf-forms   File: factories.py    License: MIT License 4 votes vote down vote up
def serializer_factory(endpoint=None, fields=None, base_class=None, model=None):

    if model is not None:
        assert endpoint is None, "You cannot specify both a model and an endpoint"
        from .endpoints import Endpoint
        endpoint = Endpoint(model=model)
    else:
        assert endpoint is not None, "You have to specify either a model or an endpoint"

    if base_class is None:
        base_class = endpoint.base_serializer

    meta_attrs = {
        'model': endpoint.model,
        'fields': fields if fields is not None else endpoint.get_fields_for_serializer()
    }
    meta_parents = (object, )
    if hasattr(base_class, 'Meta'):
        meta_parents = (base_class.Meta, ) + meta_parents

    Meta = type('Meta', meta_parents, meta_attrs)

    cls_name = '{}Serializer'.format(endpoint.model.__name__)
    cls_attrs = {
        'Meta': Meta,
    }

    for meta_field in meta_attrs['fields']:
        if meta_field not in base_class._declared_fields:
            try:
                model_field = endpoint.model._meta.get_field(meta_field)
                if isinstance(model_field, OneToOneRel):
                    cls_attrs[meta_field] = serializers.PrimaryKeyRelatedField(read_only=True)
                elif isinstance(model_field, ManyToOneRel):
                    cls_attrs[meta_field] = serializers.PrimaryKeyRelatedField(many=True, read_only=True)
                elif isinstance(model_field, ManyToManyRel):
                    # related ManyToMany should not be required
                    cls_attrs[meta_field] = serializers.PrimaryKeyRelatedField(
                        many=True,
                        required=False,
                        queryset=model_field.related_model.objects.all()
                    )
            except FieldDoesNotExist:
                cls_attrs[meta_field] = serializers.ReadOnlyField()

    try:
        return type(cls_name, (NullToDefaultMixin, base_class, ), cls_attrs)
    except TypeError:
        # MRO issue, let's try the other way around
        return type(cls_name, (base_class, NullToDefaultMixin, ), cls_attrs)