typegql 2.0.6

定义查询

fromtypingimportListfromtypegql.core.graphimportGraph,Connectionfromtypegql.examples.library.typesimportAuthor,Categoryfromtypegql.examples.library.typesimportBookfromtypegql.examples.libraryimportdbclassQuery(Graph):books:List[Book]=Field()authors:List[Author]=Field()categories:List[Category]=Field()books_connection:Connection[Book]=Field(description='Relay connection')asyncdefresolve_authors(self,info,**kwargs):returndb.get('authors')asyncdefresolve_books(self,info,**kwargs):returndb.get('books')asyncdefresolve_categories(self,info,**kwargs):returndb.get('categories')asyncdefresolve_books_connection(self,info,**kwargs):data=db.get('books')return{'edges':[{'node':node}fornodeindata]}

定义您的类型

fromdataclassesimportdataclassfromdatetimeimportdatetimefromdecimalimportDecimalfromenumimportEnumfromtypingimportListfromtypegqlimportField,ID,OptionalField,ReadonlyFieldfromtypegql.core.graphimportGraphfromexamples.libraryimportdbclassGender(Enum):MALE='male'FEMALE='female'classGeoLocation(Graph):latitude:Decimal=Field()longitude:Decimal=Field()def__init__(self,latitude,longitude):self.latitude=latitudeself.longitude=longitude@dataclassclassAuthor(Graph):"""Person that is usually a writer"""id:ID=ReadonlyField()name:str=Field()gender:Gender=OptionalField()geo:GeoLocation=OptionalField()@dataclassclassCategory(Graph):id:ID=ReadonlyField()name:str=Field()@dataclassclassBook(Graph):"""A book... for reading :|"""id:ID=ReadonlyField()author_id:ID=Field()title:str=OptionalField()author:Author=ReadonlyField(description='The author of this book')categories:List[Category]=OptionalField()published:datetime=OptionalField()tags:List[str]=OptionalField()def__post_init__(self):self.published=datetime.strptime(self.published,'%Y-%m-%d %H:%M:%S')asyncdefresolve_author(self,info):data=filter(lambdax:x['id']==self.author_id,db.get('authors'))data=next(data)author=Author(**data)author.gender=Gender[author.gender.upper()].valueif'geo'indata:author.geo=GeoLocation(**data.get('geo'))returnauthorasyncdefresolve_categories(self,selections,name=None):data=filter(lambdax:x['id']inself.categories,db.get('categories'))fordindata:# showcasing async generatoryieldCategory(**d)defresolve_tags(self,selections):return['testing','purpose']

改为使用字段

您可以使用以下字段定义GraphQL架构：

Field,InputField,RequiredField,OptionalField

例如：

fromtypegqlimportField,Connection,OptionalFieldclassQuery(Graph):authors:Author=Field()categories:Category=Field(description="what's this?")books_connection:Connection[Book]=OptionalField()

运行查询

fromtypegql.core.schemaimportSchemafromexamples.library.queryimportQueryschema=Schema(Query)query='''
query BooksConnection {
  books_connection {
    edges {
      node {
        id
        title
        published
        author {
          id
          name
        }
      }
    }
  }
}
'''asyncdefrun():result=awaitschema.run(query)

2.0.6【2019-06-24】

• 更新uvloop依赖项

2.0.5【2019-04-24】

• 修正了发送内省模式时的错误

2.0.4【2019-04-24】

• 使用状态和结果更新assert for introspection add message
• 添加对resolve_field_velue_or_error中枚举对象的支持

2.0.3【2019-02-08】

• 将连接、边、节点和页面信息更改为接口iconnection、iedge等。
• 实现默认的连接和页面信息对象
• 从pageinfo中删除下一个，上一个

2.0.1【2019-01-19】

• 没有为其分配字段实例的所有属性都将被模式忽略
• 更新文档和示例以反映2.0的更改
• 修正了在突变中使用list参数时的错误

1.0.7【2018-12-09】

修复错误< /LI>
• 在客户端添加对camelcase的支持

1.0.1【2018-11-19】

• 增加对客户端DSL的支持

初始值

• 添加了graphql-core-next作为所有graphql操作的基线