Autogenerate field content/ generate onsave

baotaoh

2 months ago

8

• 

  blupandaman

  2 months ago

  https://payloadcms.com/docs/hooks/fields
  

  
  

  Use a field or collection hook to set a random number in the before validate or something like that

• 

  baotaoh

  2 months ago

  Hi! thank you for replying that was my initial thought but i need the article number to be "aware" of the collection i,e the count and it should be unique.

  
  

  i would prefare i increased linearly aswell instead of a random num.

• 

  .redjoker

  2 months ago

  Have you tried inside the field hook for a number when the operation is 'create' using the local payload api to query the product document with the highest number currently set and adding 1 to it?

  
  
  

  Alternatively you could query the total number of products and set the field to that + some initial number (1000 in your case).

• 

  seanzubrickas

  Payload Team

  2 months ago

  Hey @baotaoh did you try this approach above? Do you still need help here? Just let us know and we'll work to get you an answer.

• 

  baotaoh

  2 months ago

  Hi, thank you for reaching out!

  
  

  I have not tried it yet will do that tomorrow <t:1689231420:D> and let you know how it goes.

  
  

  
  

  Autogenerate field content/ generate onsave

  
  

  
  

  Hi @seanzubrickas & @.redjoker !

  
  

  thank you for your replies.

  
  

  here is what i tried.

  
  
  

  import payload from 'payload'
  import type { BeforeValidateHook } from 'payload/dist/collections/config/types'
  
  import type { Product } from '../payload-types'
  
  export const createArticleNumber: BeforeValidateHook<Product> = async ({ data, operation }) => {
    if (operation === 'create') {
      const products = await payload.find({
        collection: 'product',
        sort: '-articleNumber',
      })
      const productLength = products.totalDocs
      if (productLength > 0) {
        const previousArtNumber = products.docs[0].articleNumber.slice(4)
        const newArtNumber = parseInt(previousArtNumber) + 1
        return {
          ...data,
          articleNumber: `Art-${newArtNumber}`,
        }
      }
      return {
        ...data,
        articleNumber: 'Art-1000',
      }
    }
  }

  
  
  

  I do have some follow up questions. i do not want the user to be able to manually update this field it should be disabled how do i achieve this?

• 

  .redjoker

  2 months ago

  I believe you set the field as

  readOnly
  
  https://payloadcms.com/docs/fields/overview#admin-config
• 

  baotaoh

  2 months ago

  Thanks alot!

• 

  seanzubrickas

  Payload Team

  2 months ago

  Glad we got this sorted out! We're around if you need anything else.