Create New Record in beforeChange Hook ?

browniedev3 years ago

5

import { CollectionConfig, CollectionBeforeChangeHook } from 'payload/types';
import payload from 'payload';

// create new user group
const newUserGroup = async (data): string => {
  const { id: userGroupId } = await payload.create({
      collection: 'user-groups',
      data: {
          name: data.name + '\'s Group',
      }
  });
  return userGroupId;
}

const beforeChangeHook: CollectionBeforeChangeHook = async ({data, req, operation, originalDoc}) => {
  // new users not assigned to a group will be assigned to a new group of their own
  if(operation === 'create' && !data.userGroup) {
    data.userGroup = await newUserGroup(data);
  }
  return data;
}

const Users: CollectionConfig = {
  slug: 'users',
  auth: true,
  admin: { ... },
  access: { ... },
  fields: [ 
    {
      name: 'userGroup',
      type: 'relationship',
      relationTo: 'user-groups',
      hasMany: false,
      label: 'User Group',
    },
    ...
  ],
  hooks: {
     beforeChange: [beforeChangeHook]
  }
}

• 

  dsod3 years ago

  This is absolutely something you can do. You have access to the

  payload

  instance in the

  req

  argument passed to your hook. I would try using that instance instead of importing payload. Pass the instance as a second argument to newUserGroup

• 

  browniedev3 years ago

  Thank you so much, dsod!

  
  
  

  When I pass the req to the function and use its payload, I get an error that I'm not sure of how to resolve...

  
  
  

  Here's my new function

  
  

  const newUserGroup = async (data, req): string => {
    const { id: userGroupId } = await req.payload.create({
        collection: 'user-groups',
        data: {
            name: data.name + '\'s Group',
        }
    });
    return userGroupId;
  }

  
  

  Here's the error I get when it executes

  
  

  [19:14:37] ERROR (payload): TypeError: Cannot read properties of undefined (reading 'config')
      at create (/Users/kayla/sandbox/praise-n-raise/node_modules/payload/src/collections/operations/create.ts:39:25)
      at createLocal (/Users/kayla/sandbox/praise-n-raise/node_modules/payload/src/collections/operations/local/create.ts:62:16)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)

• 

  jarrod_not_jared

  3 years ago

  @1047669407708610661

  we need to work on some error messages, I believe this stems from using the wrong collection slug. Is your slug supposed to be ‘user-group’?

• 

  browniedev3 years ago

  Woohoo!! That was the issue, thanks!

  
  
  

  I'd also like to take note of an issue I ran into after resolving the wrong collection slug.

  
  

  In my UserGroups collection, I have the following field

  
  

  {
          name: 'owner',
          type: 'relationship',
          relationTo: 'users',
          defaultValue: ({ user }) => ( user.id ),
          access: {
              update: () => false,
          },
      }

  
  

  Because a

  user

  is not the one creating this, I received the error below

  
  

  ERROR (payload): TypeError: Cannot read properties of undefined (reading 'id')
      at defaultValue (/Users/kayla/sandbox/praise-n-raise/src/collections/UserGroups.ts:24:32)

  
  

  I changed the defaultValue field in the UserGroups collection to the following

  
  

  defaultValue: ({ user }) => ( user?.id ),

  
  

  and the program executed without any errors!

  
  

  I am now able to create a new record in the beforeChange Hook 🙂

  
  
  

  Thank you Jarrod and dsod for your help!

• 

  dsod3 years ago

  Nice! 👍 🎉 Any time