problem with dispatchField - ADD_ROW doesn't show up and cause error when saving

iamPrompt

4 months ago

17

const [fields, dispatchField] = useAllFormFields()

dispatchField({
  type: 'ADD_ROW',
  path: '__path__',
  rowIndex: 0,
  subFieldState: {
    provider: {
      initialValue: '',
      value: __value__,
      valid: true,
    },
  },
})

[10:43:44] ERROR (payload): There was an error while creating a draft [object Object] with ID xxxxxxx.
[10:43:44] ERROR (payload): _shows_versions validation failed: version.__path__: Cast to embedded failed for value "1" (type number) at path "__path__" because of "ObjectParameterError"
[10:43:44] ERROR (payload): TypeError: Cannot read properties of undefined (reading 'version')

• 

  jacobsfletch

  Payload Team

  4 months ago

  @iamPrompt try to use the

  useFormFields

  hook instead, it's much more performant and might easier to work with.

  const { value } = useFormFields(([fields, dispatch]) => fields[path])
  

  
  

  Here's some related docs, too:

  https://payloadcms.com/docs/admin/hooks#useformfields
• 

  iamPrompt

  4 months ago

  @jacobsfletch I think, to get the value is fine but the way to dispatch or create a row in an array in programming way is the real problem. I'm not sure that there might be some different in

  dispatch

  function or not by using

  useFormFields

  .

  
  

  I have a few fields to change, I call dispatchField once at a time, everything fine, but the array one causing an error.

  
  

  
  

  As I saw in Array field-types

  https://github.com/payloadcms/payload/blob/master/src/admin/components/forms/field-types/Array/index.tsx#L102

  when adding row in the array, there is a call to

  dispatchRows

  immediately after

  dispatchFields

  execute. I'm not sure whether

  dispatchRows

  is a thing, if so I have tried to find the way to access it but not successful as it might depending on its own fields. What I call is from other fields to set the value.

  
• 

  jmikrut

  Payload Team

  4 months ago

  @iamPrompt yes, to add a row to an array you also need to update that array field's internal row state. @zubricks I think we should write a blog post about how to do this

• 

  iamPrompt

  4 months ago

  @jmikrut is there a quick solution how to do this?

• 

  jesschow

  Payload Team

  3 months ago

  @jmikrut how do we update the array field's internal row state?

• 

  jmikrut

  Payload Team

  3 months ago

  we could certainly build a utility to make this easier but right now it would take some manual work

• 

  iamPrompt

  3 months ago

  Any idea about this??

• 

  Pavel

  2 months ago

  @jmikrut any info on how to deal with this?

• 

  jmikrut

  Payload Team

  2 months ago

  not yet - but we can write something up soon. in the meantime, i'd say you should look at our internal Array field for some ideas. There are two states that need to be kept up to date - the

  rows

  reducer, and then of course your fields themselves

• 

  Pavel

  2 months ago

  Hope you will do something soon with this. I think it should be made easy to use.

• 

  Grandnainconnu

  3 weeks ago

  Any update on this?

• 

  jmikrut

  Payload Team

  3 weeks ago

  actually, yes, I have written up a response to someone else about how to update array fields:

  
  

  
  

  https://github.com/payloadcms/payload/issues/2427
  

  
  

  their original issue deals with nested arrays, so my example is more complex, but this should give you an idea

• 

  Grandnainconnu

  3 weeks ago

  Thank you!