将嵌套查询从 GraphQL 转换为 Graphene 不起作用答案

【问题标题】：Translating nested query from GraphQL to Graphene not working将嵌套查询从 GraphQL 转换为 Graphene 不起作用
【发布时间】：2021-06-25 02:26:24
【问题描述】：

所以我有一个 GraphQL API，我写了一个查询，它可以工作并用 GraphiQL 向我发回数据。

query dishes {
  dishes {
    name
    recipeNote
    description
  }
}

这是我对我所拥有的东西的石墨烯翻译

class Dish(ObjectType):
    name = String()
    recipeNote = String()
    description = String()
class Query(ObjectType):
    first = Field(Dish)

    def resolve_first(parent, info):
        return parent
query_string = "{ first { dishes { name recipeNote description } } }"

result = schema.execute(
        query_string)
print(result)
print(result.data)

但是这给了我一个错误{'errors': [{'message': 'Cannot query field "dishes" on type "Dish".', 'locations': [{'line': 1, 'column': 11}]}]}

【问题讨论】：

您的石墨烯翻译以及查询不正确。我假设您正在尝试取所有盘子。检查我的答案。

标签： python-3.x graphql graphene-python graphene-django

【解决方案1】：

from graphene import List, ObjectType, String

class Dish(ObjectType):
    name = String()
    recipeNote = String()
    description = String()


class Query(ObjectType):
    dishes = List(Dish)

    def resolve_dishes(parent, info):
        return [Dish(name='', recipeNote='', description=''), ...]

query_string = "query dishes {
  dishes {
    name
    recipeNote
    description
  }
}"

result = schema.execute(
        query_string)
print(result)
print(result.data)

【讨论】：