Client » bioinnova

Problem¶

The Postal Code field currently allows users to input letters and special characters, leading to invalid or inconsistent data.

Expected Behavior¶

The Postal Code field should accept only numeric values (e.g., 1216, 4000).

Requirements¶

• Only digits (0–9) are allowed
• Disallow:
  • Alphabetic characters (A–Z, a–z)
  • Special characters (!, @, #, etc.)
  • Whitespace
• Apply validation on both:
  • Client-side (HTML/JavaScript)
  • Server-side (backend/API)

Acceptance Criteria¶

• User cannot type non-numeric characters into the field
• Form submission is blocked with invalid input
• Clear validation error shown:

  "Postal Code must contain numbers only."

Notes¶

• Use <input type="number"> where applicable
• Ensure backend also enforces numeric-only input