Apollo - GraphQLError：语法错误：预期 $，找到名称

Question

I'm using GraphQL in ui/playground, with the syntax bellow, works pretty well.

    mutation {
      createUnit(unit: {name: "hehehe great!!!"}) {
        id,
        name
      }
    }

My doubt is, how can I use GraphQL in Apollo Client, I found something like that:

mutation createUnit(unit: {name: String!}) {
       createUnit(unit: {name: "looks great!!!"}) {
                            id,
                            name
                        }
                    }

But unfortunately I'm getting the error:

GraphQLError : Syntax Error: Expected $, found Name "unit"

Answer 1

Make sure you have defined the type Unit and added the createUnit type as a mutation in the resolvers

module.exports.Mutation = {
    createUnit
}

to use it in the graphql playground you just have to specify the variables you are going to use in the mutation like this

mutation($unit: Unit){
  createUnit(unit: $unit){
    id
    name
  }
}

and in the variables add :

{
  "unit": {
    name: "looks great!!!"
  }
}