Schema Directives implementation for graphene
Project description
Graphene Directives
Schema Directives implementation for graphene
Directive Locations Supported
- DirectiveLocation.SCHEMA
- DirectiveLocation.OBJECT
- DirectiveLocation.ENUM
- DirectiveLocation.INTERFACE
- DirectiveLocation.UNION
- DirectiveLocation.SCALAR
- DirectiveLocation.FIELD_DEFINITION
- DirectiveLocation.INPUT_FIELD_DEFINITION
- DirectiveLocation.INPUT_OBJECT
- DirectiveLocation.ENUM_VALUE
- DirectiveLocation.ARGUMENT_DEFINITION,
Example
Using @directive
import graphene
from graphql import (
GraphQLArgument,
GraphQLInt,
GraphQLNonNull,
GraphQLString,
)
from graphene_directives import CustomDirective, DirectiveLocation, build_schema, directive
CacheDirective = CustomDirective(
name="cache",
locations=[DirectiveLocation.FIELD_DEFINITION, DirectiveLocation.OBJECT],
args={
"max_age": GraphQLArgument(
GraphQLNonNull(GraphQLInt),
description="Specifies the maximum age for cache in seconds.",
),
"swr": GraphQLArgument(
GraphQLInt, description="Stale-while-revalidate value in seconds. Optional."
),
"scope": GraphQLArgument(
GraphQLString, description="Scope of the cache. Optional."
),
},
description="Caching directive to control cache behavior of fields or fragments.",
)
@directive(CacheDirective, max_age=200)
class SomeType(graphene.ObjectType):
field_1 = directive(CacheDirective, field=graphene.String(), max_age=300)
field_2 = directive(CacheDirective, field=graphene.String(), max_age=300, swr=2)
field_3 = graphene.String()
class Query(graphene.ObjectType):
some_query = graphene.Field(SomeType)
schema = build_schema(
query=Query, directives=[CacheDirective]
)
Using directive_decorator
import graphene
from graphql import (
GraphQLArgument,
GraphQLInt,
GraphQLNonNull,
GraphQLString,
)
from graphene_directives import CustomDirective, DirectiveLocation, build_schema, directive_decorator
CacheDirective = CustomDirective(
name="cache",
locations=[DirectiveLocation.FIELD_DEFINITION, DirectiveLocation.OBJECT],
args={
"max_age": GraphQLArgument(
GraphQLNonNull(GraphQLInt),
description="Specifies the maximum age for cache in seconds.",
),
"swr": GraphQLArgument(
GraphQLInt, description="Stale-while-revalidate value in seconds. Optional."
),
"scope": GraphQLArgument(
GraphQLString, description="Scope of the cache. Optional."
),
},
description="Caching directive to control cache behavior of fields or fragments.",
)
# This returns a partial of directive function
cache = directive_decorator(target_directive=CacheDirective)
@cache(max_age=200)
class SomeType(graphene.ObjectType):
field_1 = cache(field=graphene.String(), max_age=300)
field_2 = cache(field=graphene.String(), max_age=300, swr=2)
field_3 = graphene.String()
class Query(graphene.ObjectType):
some_query = graphene.Field(SomeType)
schema = build_schema(
query=Query, directives=[CacheDirective]
)
Custom Input Validation
from typing import Any
import graphene
from graphql import (
GraphQLArgument,
GraphQLInt,
GraphQLNonNull,
GraphQLString,
)
from graphene_directives import CustomDirective, DirectiveLocation, Schema, build_schema, directive_decorator
def input_transform(inputs: dict, _schema: Schema) -> dict:
"""
def input_transform (inputs: Any, schema: Schema) -> dict,
"""
if inputs.get("max_age") > 200:
inputs["swr"] = 30
return inputs
def validate_non_field_input(_type: Any, inputs: dict, _schema: Schema) -> bool:
"""
def validator (type_: graphene type, inputs: Any, schema: Schema) -> bool,
if validator returns False, library raises DirectiveCustomValidationError
"""
if inputs.get("max_age") > 2500:
return False
return True
def validate_field_input(
_parent_type: Any, _field_type: Any, inputs: dict, _schema: Schema
) -> bool:
"""
def validator (parent_type_: graphene_type, field_type_: graphene type, inputs: Any, schema: Schema) -> bool,
if validator returns False, library raises DirectiveCustomValidationError
"""
if inputs.get("max_age") > 2500:
return False
return True
CacheDirective = CustomDirective(
name="cache",
locations=[DirectiveLocation.FIELD_DEFINITION, DirectiveLocation.OBJECT],
args={
"max_age": GraphQLArgument(
GraphQLNonNull(GraphQLInt),
description="Specifies the maximum age for cache in seconds.",
),
"swr": GraphQLArgument(
GraphQLInt, description="Stale-while-revalidate value in seconds. Optional."
),
"scope": GraphQLArgument(
GraphQLString, description="Scope of the cache. Optional."
),
},
description="Caching directive to control cache behavior of fields or fragments.",
non_field_validator=validate_non_field_input,
field_validator=validate_field_input,
input_transform=input_transform,
)
# This returns a partial of directive function
cache = directive_decorator(target_directive=CacheDirective)
@cache(max_age=200)
class SomeType(graphene.ObjectType):
field_1 = cache(field=graphene.String(), max_age=300)
field_2 = cache(field=graphene.String(), max_age=300, swr=2)
field_3 = graphene.String()
class Query(graphene.ObjectType):
some_query = graphene.Field(SomeType)
schema = build_schema(
query=Query, directives=[CacheDirective]
)
Complex Use Cases
Refer Code
and Graphql Output
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
graphene_directives-0.4.6.tar.gz
(13.9 kB
view hashes)
Built Distribution
Close
Hashes for graphene_directives-0.4.6.tar.gz
Algorithm | Hash digest | |
---|---|---|
SHA256 | c37bd3223817433f3442794748721b7a72ad821110018975607652d4d9d33a16 |
|
MD5 | 7a626f76ab8b498900017c8ba0def49d |
|
BLAKE2b-256 | c79eb15c37455a2746865e9c9e7c8046a01051ccd12e7df3e4cf224411b6eeef |
Close
Hashes for graphene_directives-0.4.6-py3-none-any.whl
Algorithm | Hash digest | |
---|---|---|
SHA256 | 6caae14e675bfafe90ed54e6c2aa571b502b854f56b41fb6dedd3c9e98e3c08d |
|
MD5 | ce31b501a0ae42cc11c10437934c01c3 |
|
BLAKE2b-256 | 73946953ac8965ffeb78ef2ade787310150c689a2fbc44cbbb4fd941f0c17c0a |