forms

I use clean_<fieldname>() to validate individual fields and clean() to validate field combinations. Raising ValidationError shows the message to the user near the appropriate field. For cross-field validation (like 'end date must be after start

Client-side validation provides instant feedback, but server-side validation is the source of truth. I use Stimulus to add real-time validations (format, length, required fields) while still rendering server errors when validations fail on submit. The