[GraphQL] 5. Query & 6. Mutation

Query : 데이터 조회
Mutation : 데이터 추가, 수정, 삭제

type Query {
    teams: [Team]
}

type Team {
    id: Int
    manager: String
    office: String
    extension_number: String
    mascot: String
    cleaning_duty: String
    project: String
}

const resolvers = {
  Query: {
    teams: () => database.teams
  }
}

type Mutation {
    insertEquipment(
        id: String,
        used_by: String,
        count: Int,
        new_or_used: String
    ): Equipment
    ...
}

Mutation: {
    insertEquipment: (parent, args, context, info) => {
        database.equipments.push(args)
        return args
    },
    //...
}

mutation {
  insertEquipment (
    id: "laptop",
    used_by: "developer",
    count: 17,
    new_or_used: "new"
  ) {
    id
    used_by
    count
    new_or_used
  }
}

type Mutation {
    editEquipment(
        id: String,
        used_by: String,
        count: Int,
        new_or_used: String
    ): Equipment
    ...
}

Mutation: {
    // ...
    editEquipment: (parent, args, context, info) => {
        return database.equipments.filter((equipment) => {
            return equipment.id === args.id
        }).map((equipment) => {
            Object.assign(equipment, args)
            return equipment
        })[0]
    },
    // ...
}

mutation {
  editEquipment (
    id: "pen tablet",
    new_or_used: "new",
    count: 30,
    used_by: "designer"
  ) {
    id
    new_or_used
    count
    used_by
  }
}

type Mutation {
    deleteEquipment(id: String): Equipment
}

Mutation: {
      deleteEquipment: (parent, args, context, info) => {
          const deleted = database.equipments
              .filter((equipment) => {
                  return equipment.id === args.id
              })[0]
          database.equipments = database.equipments
              .filter((equipment) => {
                  return equipment.id !== args.id
              })
          return deleted
      }
}

mutation {
  deleteEquipment(id: "notebook") {
    id
    used_by
    count
    new_or_used
  }
}