Graphene Django "Must provide query string"

user_816116 0
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I have setup a Graphene server using Django. When I run my queries through GraphiQL (the web client), everything works fine. However, when I run from anywhere else, I get the error: "Must provide query string."

I did some troubleshooting. GraphiQL sends POST data to the GraphQL server with Content-Type: application/json. Here is the body of the request that I copied from Chrome network tab for GraphiQL:

{"query":"query PartnersQuery {\n  partners{\n    name\n    url\n    logo\n  }\n}","variables":"null","operationName":"PartnersQuery"}

When I copy it to Postman with Content-Type: application/json, I get the following response:

{
  "errors": [
    {
      "message": "Must provide query string."
    }
  ]
}

What can be the cause of this problem? I have not done anything crazy with the schema. Just followed the tutorials from graphene's docs. What else can cause an issue like this?

graphene-python graphql django
7 Answers

I faced the same problem when I try to used graphQl query using POSTMAN, In POSTMAN send data in row with json type. You have to make json data grapQl query and mutations data like this

Query Command:

{"query":"{user(id:902){id,username,DOB}}"}

Mutations Command:

{ "query": "mutation {createMutations(reviewer:36, comments:\"hello\",loan: 1659, approved: true ){id}}" }

       #commnent: String Type
       #data_id:Int Type
       #approved:Boolean Type
user_82312700

Enable graphine on django

  url(r'^graphql', csrf_exempt(GraphQLView.as_view(graphiql=settings.DEBUG))),

Execute some query and see it is working

On Chrome browser, go to graphiQL endpoint: http://localhost:8000/graphql? open "Developer Tools" in browser and go to "Network" tab.

Execute your query again. Now it appears on list of requests. Now right mouse click on it and copy it "copy as CURL". Now you can strait copy paste it to linux terminal with curl installed. Or like in your case you can try to deduct what is what there, and try to reuse it in your IDE like client like Insomnia or Postman. For instance you may discover that authorisation that works with session on graphiQL enpoint, is not what you want at the end...

curl 'http://localhost:8000/graphql?' -H 'Origin: http://localhost:8000' -H 'Accept-Encoding: gzip, deflate, br' -H 'Accept-Language: en-US,en;q=0.9,pl;q=0.8,de;q=0.7' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36' -H 'Content-Type: application/json' -H 'Accept: application/json' -H 'Cookie: _ga=GA1.1.1578283610.1528109563; _gid=GA1.1.920024733.1541592686; csrftoken=EGBeegFoyMVl8j1fQbuEBG587nOFP2INwv7Q0Ee6HeHHmsLOPUwRonzun9Y6pOjV; sessionid=4u9vngcnmjh927a9avpssvc4oq9qyqoe' -H 'Connection: keep-alive' -H 'X-CSRFToken: EGBeegFoyMVl8j1fQbuEBG587nOFP2INwv7Q0Ee6HeHHmsLOPUwRonzun9Y6pOjV' --data-binary '{"query":"{\n  allStatistics(projectId: 413581, first:25) {\n    pageInfo {\n      startCursor\n      endCursor\n      hasPreviousPage\n      hasNextPage\n    }\n    edges {\n      cursor\n      node {\n        id\n        clickouts\n        commissionCanc\n        commissionConf\n        commissionLeads\n        commissionOpen\n        eventDate\n        extractTstamp\n        hash\n        leads\n        pageviews\n        projectId\n        transactionsCanc\n        transactionsConf\n        transactionsOpen\n      }\n    }\n  }\n}\n","variables":null,"operationName":null}' --compressed
user_2624060
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