Python OrderedDict.items方法代碼示例

# 需要導入模塊: from rest_framework.compat import OrderedDict [as 別名]
# 或者: from rest_framework.compat.OrderedDict import items [as 別名]
def get_field_info(model):
    """
    Given a model class, returns a `FieldInfo` instance containing metadata
    about the various field types on the model.
    """
    # Deal with the primary key.
    pk = model.id if not issubclass(model, mongoengine.EmbeddedDocument) else None

    # Deal with regular fields.
    fields = OrderedDict()

    for field_name in model._fields_ordered:
        fields[field_name] = model._fields[field_name]

    # Deal with forward relationships.
    # Pass forward relations since there is no relations on mongodb
    forward_relations = OrderedDict()

    # Deal with reverse relationships.
    # Pass reverse relations since there is no relations on mongodb
    reverse_relations = OrderedDict()

    # Shortcut that merges both regular fields and the pk,
    # for simplifying regular field lookup.
    fields_and_pk = OrderedDict()
    fields_and_pk["pk"] = pk
    fields_and_pk[getattr(pk, "name", "pk")] = pk
    fields_and_pk.update(fields)

    # Shortcut that merges both forward and reverse relationships

    relations = OrderedDict(list(forward_relations.items()) + list(reverse_relations.items()))

    return FieldInfo(pk, fields, forward_relations, reverse_relations, fields_and_pk, relations)

# 需要導入模塊: from rest_framework.compat import OrderedDict [as 別名]
# 或者: from rest_framework.compat.OrderedDict import items [as 別名]
class BindingDict(object):
    """
    This dict-like object is used to store fields on a serializer.

    This ensures that whenever fields are added to the serializer we call
    `field.bind()` so that the `field_name` and `parent` attributes
    can be set correctly.
    """
    def __init__(self, serializer):
        self.serializer = serializer
        self.fields = OrderedDict()

    def __setitem__(self, key, field):
        self.fields[key] = field
        field.bind(field_name=key, parent=self.serializer)

    def __getitem__(self, key):
        return self.fields[key]

    def __delitem__(self, key):
        del self.fields[key]

    def items(self):
        return self.fields.items()

    def keys(self):
        return self.fields.keys()

    def values(self):
        return self.fields.values()

# 需要導入模塊: from rest_framework.compat import OrderedDict [as 別名]
# 或者: from rest_framework.compat.OrderedDict import items [as 別名]
def get_field_info(model):
    """
    Given a model class, returns a `FieldInfo` instance containing metadata
    about the various field types on the model.
    """
    opts = model._meta.concrete_model._meta

    # Deal with the primary key.
    pk = opts.pk
    while pk.rel and pk.rel.parent_link:
        # If model is a child via multitable inheritance, use parent's pk.
        pk = pk.rel.to._meta.pk

    # Deal with regular fields.
    fields = OrderedDict()
    for field in [field for field in opts.fields if field.serialize and not field.rel]:
        fields[field.name] = field

    # Deal with forward relationships.
    forward_relations = OrderedDict()
    for field in [field for field in opts.fields if field.serialize and field.rel]:
        forward_relations[field.name] = RelationInfo(
            model_field=field,
            related=_resolve_model(field.rel.to),
            to_many=False,
            has_through_model=False
        )

    # Deal with forward many-to-many relationships.
    for field in [field for field in opts.many_to_many if field.serialize]:
        forward_relations[field.name] = RelationInfo(
            model_field=field,
            related=_resolve_model(field.rel.to),
            to_many=True,
            has_through_model=(
                not field.rel.through._meta.auto_created
            )
        )

    # Deal with reverse relationships.
    reverse_relations = OrderedDict()
    for relation in opts.get_all_related_objects():
        accessor_name = relation.get_accessor_name()
        reverse_relations[accessor_name] = RelationInfo(
            model_field=None,
            related=relation.model,
            to_many=relation.field.rel.multiple,
            has_through_model=False
        )

    # Deal with reverse many-to-many relationships.
    for relation in opts.get_all_related_many_to_many_objects():
        accessor_name = relation.get_accessor_name()
        reverse_relations[accessor_name] = RelationInfo(
            model_field=None,
            related=relation.model,
            to_many=True,
            has_through_model=(
                (getattr(relation.field.rel, 'through', None) is not None)
                and not relation.field.rel.through._meta.auto_created
            )
        )

    # Shortcut that merges both regular fields and the pk,
    # for simplifying regular field lookup.
    fields_and_pk = OrderedDict()
    fields_and_pk['pk'] = pk
    fields_and_pk[pk.name] = pk
    fields_and_pk.update(fields)

    # Shortcut that merges both forward and reverse relationships

    relations = OrderedDict(
        list(forward_relations.items()) +
        list(reverse_relations.items())
    )

    return FieldInfo(pk, fields, forward_relations, reverse_relations, fields_and_pk, relations)