How to create or delete multiple values at a time in a batch?

[janhesters]

** Which Category is your question related to? **
API

** What AWS Services are you utilizing? **
GraphQL, Dynamo DB, Codegen

** Provide additional details e.g. code snippets **
I have the following schema:

type Contact @model @auth(rules: [{ allow: owner }]) {
  id: ID!
  firstName: String!
  lastName: String!
  city: String
  company: String
  position: String
  group: Group!
  tendency: Tendency!
}

enum Group {
  innerFive
  friend
  confidant
  acquaintance
  distantAcquaintance
}

enum Tendency {
  rise
  maintain
  fall
}

This generated the following Graphql mutations for creating and deleting:

export const createContact = `mutation CreateContact($input: CreateContactInput!) {
  createContact(input: $input) {
    id
    firstName
    lastName
    city
    company
    position
    group
    tendency
  }
}
`;

export const deleteContact = `mutation DeleteContact($input: DeleteContactInput!) {
  deleteContact(input: $input) {
    id
    firstName
    lastName
    city
    company
    position
    group
    tendency
  }
}
`;

How can I delete or create in bulk? Let's say I have an array of ID's. What is the most efficient way to delete all users with those ID's?

[manueliglesias]

Hi @janhesters

You can Add a custom resolver that targets a DynamoDB table from @model

Those docs mention writing more specific queries, but there is no reason it couldn't be adapted to do PUT operations / use DynamoDB Batch Resolvers.

You can construct your GraphQL mutations to accept a collection of ids and then implement the associated resolvers to perform batch operations.

I hope this helps. Also, if you want, you can creeate a feature request in the aws-amplify/amplify-cli repo

[janhesters]

@manueliglesias Thank you for the answer. I will do that 👍

[LucasAndrad]

@jamesiri did you succeed with this approach? If yes, could you share your solution?

[PeteDuncanson]

@LucasAndrad and anyone else who stumbles on this, @janhesters wrote up their findings in this blog https://medium.com/@jan.hesters/creating-graphql-batch-operations-for-aws-amplify-with-appsync-and-cognito-ecee6938e8ee

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