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schema.py
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schema.py
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import functools
from django.db import models
import graphene
from graphene_django.compat import ArrayField, HStoreField, RangeField
from graphene_django.registry import get_global_registry
_registry = get_global_registry()
class FieldKind(graphene.Enum):
"""Field kind."""
ID = "id"
JSON = "json"
STRING = "string"
TEXT = "text"
BOOLEAN = "boolean"
INTEGER = "integer"
DECIMAL = "decimal"
FLOAT = "float"
DATE = "date"
DATETIME = "datetime"
TIME = "time"
PERCENT = "percent"
EMAIL = "email"
SLUG = "slug"
PHONE = "phone"
UUID = "uuid"
IP = "ip"
URL = "url"
FILE = "file"
PASSWORD = "password"
CURRENCY = "currency"
POSTAL_CODE = "postal-code"
COMPANY_DOCUMENT = "company-document"
INDIVIDUAL_DOCUMENT = "individual-document"
@functools.singledispatch
def get_field_schema(field, registry=None) -> dict:
raise Exception(f"Don't know how to convert the Django field {field} ({field.__class__})")
@get_field_schema.register(models.CharField)
def get_field_schema_string(field, registry=None):
return {
"kind": FieldKind.STRING,
}
@get_field_schema.register(models.TextField)
def get_field_schema_text(field, registry=None):
return {
"kind": FieldKind.TEXT,
}
@get_field_schema.register(models.EmailField)
def get_field_schema_email(field, registry=None):
return {
"kind": FieldKind.EMAIL,
}
@get_field_schema.register(models.SlugField)
def get_field_schema_slug(field, registry=None):
return {
"kind": FieldKind.SLUG,
}
@get_field_schema.register(models.UUIDField)
def get_field_schema_uuid(field, registry=None):
return {
"kind": FieldKind.UUID,
}
@get_field_schema.register(models.URLField)
def get_field_schema_url(field, registry=None):
return {
"kind": FieldKind.URL,
}
@get_field_schema.register(models.GenericIPAddressField)
def get_field_schema_ip(field, registry=None):
return {
"kind": FieldKind.IP,
}
@get_field_schema.register(models.FileField)
@get_field_schema.register(models.ImageField)
@get_field_schema.register(models.FilePathField)
def get_field_schema_file(field, registry=None):
return {
"kind": FieldKind.FILE,
}
@get_field_schema.register(models.AutoField)
@get_field_schema.register(models.PositiveIntegerField)
@get_field_schema.register(models.PositiveSmallIntegerField)
@get_field_schema.register(models.SmallIntegerField)
@get_field_schema.register(models.BigIntegerField)
@get_field_schema.register(models.IntegerField)
def get_field_schema_int(field, registry=None):
return {
"kind": FieldKind.INTEGER,
}
@get_field_schema.register(models.DecimalField)
@get_field_schema.register(models.DurationField)
def get_field_schema_decimal(field, registry=None):
return {
"kind": FieldKind.DECIMAL,
"validation": {
"max_digits": field.max_digits,
"decimal_places": field.decimal_places,
},
}
@get_field_schema.register(models.FloatField)
def get_field_schema_float(field, registry=None):
return {
"kind": FieldKind.FLOAT,
}
@get_field_schema.register(models.BooleanField)
def get_field_schema_bool(field, registry=None):
return {
"kind": FieldKind.BOOLEAN,
}
if hasattr(models, "NullBooleanField"):
@get_field_schema.register(models.NullBooleanField) # type:ignore
def get_field_schema_nullbool(field, registry=None):
return {
"kind": FieldKind.BOOLEAN,
}
@get_field_schema.register(models.DateField)
def get_field_schema_date(field, registry=None):
return {
"kind": FieldKind.DATE,
}
@get_field_schema.register(models.DateTimeField)
def get_field_schema_datetime(field, registry=None):
return {
"kind": FieldKind.DATETIME,
}
@get_field_schema.register(models.TimeField)
def get_field_schema_time(field, registry=None):
return {
"kind": FieldKind.TIME,
}
@get_field_schema.register(models.ForeignKey)
@get_field_schema.register(models.OneToOneRel)
@get_field_schema.register(models.OneToOneField)
def get_field_schema_fk(field, registry=None):
model = field.related_model
registry = registry or _registry
_type = registry.get_type_for_model(model)
return {
"kind": FieldKind.ID,
"of_type": _type._meta.name if _type else None,
}
@get_field_schema.register(models.ManyToManyField)
@get_field_schema.register(models.ManyToManyRel)
@get_field_schema.register(models.ManyToOneRel)
def get_field_schema_m2m(field, registry=None):
model = field.related_model
registry = registry or _registry
_type = registry.get_type_for_model(model)
return {
"kind": FieldKind.ID,
"of_type": _type._meta.name if _type else None,
"multiple": True,
}
@get_field_schema.register(ArrayField)
@get_field_schema.register(RangeField)
def get_field_schema_array(field, registry=None):
d = get_field_schema(field.base_field)
d["multiple"] = True
return d
@get_field_schema.register(models.JSONField)
@get_field_schema.register(HStoreField)
def get_field_schema_pg(field, registry=None):
return {
"kind": FieldKind.JSON,
}