Conditionally required logic or separate the required logic of admin and field.

[Stupidism]

For example
Some fields are required if type is external

The other field article is required if type is internal

[ssyberg]

👍🏼 would love to see this, also wondering if there's an existing ticket for this?

[hjbugajski]

@Stupidism @ssyberg Hello! This is possible, you just need to add required: true on the field that’s conditionally rendered. The validation only occurs when the field is rendered, so setting required on that field works as expected.

{
  name: 'url',
  label: 'External Link',
  type: 'text',
  required: true,
  admin: {
    condition: (_, siblingData) => siblingData?.type === 'external'
  }
}

[ssyberg]

This doesn't quite get us there, some fields are still shown but become optional depending on the value of sibling data. This solve is a custom validator but you then lose the native admin required field treatment.

[hjbugajski]

I see. The original post reads as marking fields that are specific to a certain type as required, not fields that match multiple types but are only required for a subset. In that case, then a conditional required functionality is needed.

It's not ideal, but you can achieve this by having duplicate fields (one with required, one without) and conditionally render them based on the type.

Example code

export const linkGroup: Field = {
  name: 'link',
  type: 'group',
  fields: [
    {
      name: 'text',
      type: 'text',
      required: true,
    },
    {
      name: 'type',
      type: 'radio',
      admin: {
        layout: 'horizontal',
      },
      defaultValue: 'internal',
      required: true,
      options: [
        {
          label: 'Internal',
          value: 'internal',
        },
        {
          label: 'External',
          value: 'external',
        },
      ],
    },
    {
      name: 'demoField',
      type: 'text',
      required: true,
      admin: {
        condition: (_, siblingData) => siblingData?.type === 'internal',
      },
    },
    {
      name: 'demoField',
      type: 'text',
      admin: {
        condition: (_, siblingData) => siblingData?.type === 'external',
      },
    },
  ],
};