Your schema defines a mutation field newItem that takes 3 arguments, but mutation fields must have exactly one argument named input.

[jaredonline]

I'm not sure what's goin' on here. I've seen a lot of examples in the wild that take multiple arguments for a mutation.

The introspection looks like:
Query:

query schema {
  __schema{
    mutationType{
      name,
      fields{
        name,
        args{
          name,
          type{
            kind,
            ofType{
               kind,
               name
}}}}}}}

Response

{
  "data": {
    "__schema": {
      "mutationType": {
        "fields": [
          {
            "args": [
              {
                "name": "name",
                "type": {
                  "kind": "NON_NULL",
                  "ofType": {
                    "kind": "SCALAR",
                    "name": "String"
                  }
                }
              },
              {
                "name": "purchase_price_cents",
                "type": {
                  "kind": "NON_NULL",
                  "ofType": {
                    "kind": "SCALAR",
                    "name": "Int"
                  }
                }
              },
              {
                "name": "sale_price_cents",
                "type": {
                  "kind": "NON_NULL",
                  "ofType": {
                    "kind": "SCALAR",
                    "name": "Int"
                  }
                }
              }
            ],
            "name": "newItem"
          }
        ],
        "name": "Mutation"
      }
    }
  }
}

Is this actually a problem with my schema or something else?

[josephsavona]

See the Relay Mutation Spec.

[josephsavona]

Relay requires that GraphQL schema follow a few conventions - single arguments to mutations is one of them.

[jaredonline]

Aha, I see. Thanks for the super fast response! I was looking at this mutations guide which seems to be a bit out of date? It doesn't mention the special "input" variable anywhere ]=

[josephsavona]

@jaredonline Yeah, that guide is meant to cover mutations on the Relay side, but we should probably link to the Mutations Spec from that guide. PRs welcome! ;-)

[Ansalibrahim]

@jaredonline

single arguments to mutations is one of them.

Is there any chance to pass multiple arguments to mutations? I have seen some code like this somewhere
getVariables() { return { text: this.props.text, id:this.props.id, time:this.props.time }; }

[Naoto-Ida]

@Ansalibrahim I have the same problem too.

The document states that:

Implement this required method to prepare variables to be used as input to the mutation.

so I assumed we can pass multiple arguments when doing mutations.

I'm getting the same mutation fields must have exactly one argument named 'input' when I do the following:

getVariables() {
  return {
    name: this.props.name,
    type: this.props.type,
  }
}

I checked out my schema.js just to make sure an input argument wasn't automatically added, but seems like thats not the case. I can also successfully do the same mutation from GraphiQL.

So this could be something in react-relay or babel-relay-plugin?

!UPDATE!

After looking through more recent issues, it seems that it is true that input is required.

So on the GraphQL side I wrapped all my previous args in a field called input with the type GraphQLInputObjectType. Problem solved. But I think the documentation needs clarification on this.

[josephsavona]

@Naoto-Ida Glad you got this solved. We've documented this requirement in the Relay Mutation Spec, but if there are other places that you expected to see it and didn't, please submit a PR to update the docs!

[Naoto-Ida]

@josephsavona Ok, thank you for pointing that out. I'll see if I can submit a PR this week.