Contrib.social

Config of the type plural_label can never be valid due to the label constraint

Open on Drupal.org →
Created on 3 July 2025, 1 day ago

Problem/Motivation

Consider

label:
  type: string
  label: 'Optional label'
  translatable: true
  constraints:
    Regex:
      # Forbid any kind of control character.
      # @see https://stackoverflow.com/a/66587087
      pattern: '/([^\PC])/u'
      match: false
      message: 'Labels are not allowed to span multiple lines or contain control characters.'

But

# String containing plural variants, separated by EXT.
plural_label:
  type: label
  label: 'Plural variants'

And then in views...

    format_plural_string:
      type: plural_label
      label: 'Plural variants'
      constraints:
        Regex:
          # Normally, labels cannot contain invisible control characters. In this particular
          # case, an invisible character (ASCII 3, 0x03) is used to encode translation
          # information, so carve out an exception for that only.
          # @see \Drupal\views\Plugin\views\field\NumericField
          pattern: '/([^\PC\x03])/u'
          match: false
          message: 'Labels are not allowed to span multiple lines or contain control characters.'

Steps to reproduce

Proposed resolution

Move the constraint from views to core.

Remaining tasks

User interface changes

None

Introduced terminology

N/a

API changes

None

Data model changes

None

Release notes snippet

N/a

🐛 Bug report
Status

Active

Version

11.0 🔥

Component

configuration system

Created by

🇬🇧United Kingdom alexpott 🇪🇺🌍

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