CODEWITHSUNDEEP
javascriptgraphqlprisma-graphql
Dan Boterashvili
Dan Boterashvili

Reputation: 93

cannot write a mutation with an array of strings

Cannot use set in graphql playground with list scalar type.

I have created my Prisma datamodel.graphql and deployed it. One of the fields in my Exercise type is a list of movements. I used the list scalar type to define this field, and wrote the accompanying mutation in my mutation.js file. When I try to add a new exercise in my graphql playground I get this error.

{
  "data": null,
  "errors": [
    {
      "message": "Variable \"$_v0_data\" got invalid value {\"name\":\"split squat 3\",\"movement\":[\"push\",\"pull\"],\"liked\":false}; Field \"0\" is not defined by type ExerciseCreatemovementInput at value.movement.\nVariable \"$_v0_data\" got invalid value {\"name\":\"split squat 3\",\"movement\":[\"push\",\"pull\"],\"liked\":false}; Field \"1\" is not defined by type ExerciseCreatemovementInput at value.movement.",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "createExercise"
      ]
    }
  ]
}

Here is the mutation i wrote in graphql playground.

mutation {
  createExercise(
    name: "split squat 3"
    movement: ["push", "pull"]
    liked: false
  ) {
    id
    name
  }
}

Here is the datamodel.graphql file.

type User {
  id: ID! @unique
  name: String!
}

# model for exercises
type Exercise {
  id: ID! @unique
  name: String!
  movement: [String!]!
  liked: Boolean
  video: String
}

When I write the mutation without any strings and just an empty array like this,

mutation {
  createExercise(
    name: "split squat 3"
    movement: []
    liked: false
  ) {
    id
    name
  }
}

everything works just fine and the exercise is added as a new node.

When I try to write the mutation with set like this,

mutation {
  createExercise(
    name: "split squat 3"
    movement: {set: ["push","pull"]}
    liked: false
  ) {
    id
    name
  }
}

I get an error as well.

I can log into prisma.io and add the strings to the array by manually creating a new node.

Im not sure why I cannot add a list of strings in my mutation. =

Upvotes: 5

Views: 1684

Answers (2)

Di Wang
Di Wang

Reputation: 457

movement: {set: ["push","pull"]} is working for me.

Upvotes: 0

undefined
undefined

Reputation: 2129

You have to create a separate input just like in the prisma schema.

input ExcerciseCreatemovementInput{
  set: [String!]
}

Upvotes: 2

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