Implement a global custom field system that allows defining fields once
and reusing them across all clients. Fields can be marked as mandatory
or optional, and values become clickable links when link templates are
assigned.
- Add CustomFieldDefinition model and admin interface
- Support mandatory/optional flags with validation
- Update client forms to use global definitions
- Enhance link templates to support {value} and %value% placeholders
- Make custom field values clickable in client view
- Add migration 084 for custom_field_definitions table
Breaking: Client custom fields now require global definitions. Existing
custom fields continue to work, but new fields must be defined globally.
Dries Peeters
3f5d253a8b