updating data using mutation

 put and patch requests difference:

put overwrites the data of the complete record.

patch will updates only the fields provided.

axios.patch(`http://localhost:3000/users/${userId}`,{"value to update"})

so add editUser mutation to the mutation fields,for reference, check delete mutation created earlier post.

editUser: {

      type: UserType,

      args: {

        id: {type: new GraphQLNonNull(GraphQLString)},

        firstName:  {type: GraphQLString},

        age: {type: GraphQLInt},

        companyId:{type: GraphQLString}

      },

      resolve(parentValue,args){

        return axios.patch(`http://localhost:3000/users/${id}`,args)

        .then(res=>res.data);

      }

    }

To test the code:

//sample 1:

mutation{

  editUser(id: "40",age: 10){

    id

    firstName

    age

  }

 }

//sample 2:

 

 mutation{

  editUser(id: "40",firstName: "Samantha2"){

    id

    firstName

    age

  }

 }