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石墨烯django-如何过滤?

graphene-python graphql django python

21

Nevenoe · 技术社区 · 8 年前

我使用graphen django构建GraphQL API。我已经成功地创建了这个API,但是我不能传递参数来过滤我的响应。

这是我的 models.py :

from django.db import models

class Application(models.Model):
    name = models.CharField("nom", unique=True, max_length=255)
    sonarQube_URL = models.CharField("Url SonarQube", max_length=255, blank=True, null=True)

    def __unicode__(self):
    return self.name

这是我的 schema.py : 进口石墨烯从graphene_django导入DjangoObjectType 从模型导入应用程序

class Applications(DjangoObjectType):
    class Meta:
        model = Application

class Query(graphene.ObjectType):
    applications = graphene.List(Applications)

    @graphene.resolve_only_args
    def resolve_applications(self):
        return Application.objects.all()


schema = graphene.Schema(query=Query)

我的 url.py :

urlpatterns = [
    url(r'^', include(router.urls)),
    url(r'^admin/', admin.site.urls),
    url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework')),
    url(r'^api-token-auth/', authviews.obtain_auth_token),
    url(r'^graphql', GraphQLView.as_view(graphiql=True)),
]

如您所见,我还有一个RESTAPI。

我的 settings.py 包含:

GRAPHENE = {
    'SCHEMA': 'tibco.schema.schema'
}

我遵循这一点: https://github.com/graphql-python/graphene-django

{
  applications {
    name
  }
}

我得到了这样的回应:

{
  "data": {
    "applications": [
      {
        "name": "foo"
      },
      {
        "name": "bar"
      }
    ]
   }
}

所以,它的工作!

{
  applications(name: "foo") {
    name
    id
  }
}

我有以下回应:

{
  "errors": [
   {
      "message": "Unknown argument \"name\" on field \"applications\" of type \"Query\".",
      "locations": [
        {
          "column": 16,
          "line": 2
        }
      ]
    }
  ]
}

3 回复 | 直到 8 年前

1

21

Nevenoe 5 年前

由于以下原因,我找到了解决方案: https://docs.graphene-python.org/projects/django/en/latest/

这是我的答案。我必须编辑我的 schema.py :

import graphene
from graphene import relay, AbstractType, ObjectType
from graphene_django import DjangoObjectType
from graphene_django.filter import DjangoFilterConnectionField
from models import Application

class ApplicationNode(DjangoObjectType):
    class Meta:
        model = Application
        filter_fields = ['name', 'sonarQube_URL']
        interfaces = (relay.Node, )

class Query(ObjectType):
    application = relay.Node.Field(ApplicationNode)
    all_applications = DjangoFilterConnectionField(ApplicationNode)

schema = graphene.Schema(query=Query)

然后,它丢失了一个包:django过滤器( https://github.com/carltongibson/django-filter/tree/master ). Django过滤器由DjangoFilterConnectionField使用。

现在我可以这样做了:

query {
  allApplications(name: "Foo") {
    edges {
      node {
        name
      }
    }
  }
}

并且响应将是:

{
  "data": {
    "allApplications": {
      "edges": [
        {
          "node": {
            "name": "Foo"
          }
        }
      ]
    }
  }
}

2

5

elachere 5 年前

如果您在我的情况下不想使用Relay,也可以使用Django orm过滤直接在解析器中处理过滤。例如: Filter graphql query in django

3

monofal 4 年前

除了阿德里安的回答。如果要在筛选时执行不同的操作,如包含和精确匹配,请编辑 schema.py

class ApplicationNode(DjangoObjectType):
    class Meta:
        model = Application
        # Provide more complex lookup types
        filter_fields = {
            'name': ['exact', 'icontains', 'istartswith']
        }
        interfaces = (relay.Node, )

  query {
  allApplications(name_Icontains: "test") {
    edges {
      node {
        id,
        name
      }
    }
  }
}