mirror of
https://github.com/graphql-python/graphene.git
synced 2024-11-23 10:03:54 +03:00
150 lines
5.1 KiB
Python
150 lines
5.1 KiB
Python
from django.db import models
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from django.utils.encoding import force_text
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from graphene import Enum, List, ID, Boolean, Float, Int, String, Field, NonNull
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from graphene.types.json import JSONString
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from graphene.types.datetime import DateTime
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from graphene.utils.str_converters import to_const
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from graphene.relay import Node
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from .compat import (ArrayField, HStoreField, JSONField, RangeField,
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RelatedObject, UUIDField)
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from .utils import get_related_model, import_single_dispatch
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from .fields import get_connection_field
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singledispatch = import_single_dispatch()
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def convert_choices(choices):
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for value, name in choices:
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if isinstance(name, (tuple, list)):
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for choice in convert_choices(name):
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yield choice
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else:
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yield to_const(force_text(name)), value
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def convert_django_field_with_choices(field, registry=None):
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choices = getattr(field, 'choices', None)
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if choices:
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meta = field.model._meta
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name = '{}{}'.format(meta.object_name, field.name.capitalize())
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graphql_choices = list(convert_choices(choices))
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enum = Enum(name, list(graphql_choices))
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return enum(description=field.help_text)
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return convert_django_field(field, registry)
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@singledispatch
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def convert_django_field(field, registry=None):
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raise Exception(
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"Don't know how to convert the Django field %s (%s)" %
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(field, field.__class__))
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@convert_django_field.register(models.CharField)
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@convert_django_field.register(models.TextField)
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@convert_django_field.register(models.EmailField)
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@convert_django_field.register(models.SlugField)
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@convert_django_field.register(models.URLField)
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@convert_django_field.register(models.GenericIPAddressField)
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@convert_django_field.register(models.FileField)
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@convert_django_field.register(UUIDField)
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def convert_field_to_string(field, registry=None):
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return String(description=field.help_text)
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@convert_django_field.register(models.AutoField)
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def convert_field_to_id(field, registry=None):
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return ID(description=field.help_text)
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@convert_django_field.register(models.PositiveIntegerField)
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@convert_django_field.register(models.PositiveSmallIntegerField)
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@convert_django_field.register(models.SmallIntegerField)
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@convert_django_field.register(models.BigIntegerField)
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@convert_django_field.register(models.IntegerField)
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def convert_field_to_int(field, registry=None):
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return Int(description=field.help_text)
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@convert_django_field.register(models.BooleanField)
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def convert_field_to_boolean(field, registry=None):
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return NonNull(Boolean, description=field.help_text)
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@convert_django_field.register(models.NullBooleanField)
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def convert_field_to_nullboolean(field, registry=None):
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return Boolean(description=field.help_text)
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@convert_django_field.register(models.DecimalField)
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@convert_django_field.register(models.FloatField)
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def convert_field_to_float(field, registry=None):
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return Float(description=field.help_text)
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@convert_django_field.register(models.DateField)
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def convert_date_to_string(field, registry=None):
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return DateTime(description=field.help_text)
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@convert_django_field.register(models.OneToOneRel)
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def convert_onetoone_field_to_djangomodel(field, registry=None):
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model = get_related_model(field)
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return Field(registry.get_type_for_model(model))
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@convert_django_field.register(models.ManyToManyField)
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@convert_django_field.register(models.ManyToManyRel)
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@convert_django_field.register(models.ManyToOneRel)
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def convert_field_to_list_or_connection(field, registry=None):
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model = get_related_model(field)
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_type = registry.get_type_for_model(model)
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if not _type:
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return
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if issubclass(_type, Node):
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return get_connection_field(_type)
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return Field(List(_type))
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# For Django 1.6
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@convert_django_field.register(RelatedObject)
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def convert_relatedfield_to_djangomodel(field, registry=None):
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model = field.model
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_type = registry.get_type_for_model(model)
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if issubclass(_type, Node):
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return get_connection_field(_type)
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return List(_type)
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@convert_django_field.register(models.OneToOneField)
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@convert_django_field.register(models.ForeignKey)
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def convert_field_to_djangomodel(field, registry=None):
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model = get_related_model(field)
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_type = registry.get_type_for_model(model)
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return Field(_type, description=field.help_text)
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@convert_django_field.register(ArrayField)
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def convert_postgres_array_to_list(field, registry=None):
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base_type = convert_django_field(field.base_field)
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if not isinstance(base_type, (List, NonNull)):
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base_type = type(base_type)
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return List(base_type, description=field.help_text)
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@convert_django_field.register(HStoreField)
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@convert_django_field.register(JSONField)
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def convert_posgres_field_to_string(field, registry=None):
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return JSONString(description=field.help_text)
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@convert_django_field.register(RangeField)
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def convert_posgres_range_to_string(field, registry=None):
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inner_type = convert_django_field(field.base_field)
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if not isinstance(inner_type, (List, NonNull)):
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inner_type = type(inner_type)
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return List(inner_type, description=field.help_text)
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