python field readonly-凯发k8官方网

# 需要导入模块: from rest_framework import serializers [as 别名]

# 或者: from rest_framework.serializers import readonlyfield [as 别名]

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)

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