Windsurf ui

Cascade Removed Form Validation Logic

Form validation is completely broken after Cascade refactored form submission code. Invalid data is being accepted, required fields show no validation errors, and server receives malformed data.

Cascade likely removed validation logic thinking it was redundant or simplified the submission handler.

Error Messages You Might See

Validation failed: field is required BindingResult contains errors ConstraintViolationException: validation failed Invalid email format accepted
Validation failed: field is requiredBindingResult contains errorsConstraintViolationException: validation failedInvalid email format accepted

Common Causes

  1. Cascade removed client-side validation JavaScript without preserving validation logic
  2. @Valid or @Validated annotations removed from controller endpoints
  3. Cascade deleted custom validator classes or JSR-380 constraint annotations
  4. Form error display elements (span.error) removed from templates

How to Fix It

Add back form validation: client-side with HTML5 attributes or JavaScript, server-side with @Valid on @RequestBody. Implement BindingResult parameter in controller to capture validation errors. Display error messages in form templates. Test with invalid inputs to ensure validation triggers.

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Frequently Asked Questions

How do I add server-side validation?

Add @Valid annotation to controller method parameter and BindingResult to capture errors. Check bindingResult.hasErrors().

What are JSR-380 constraints?

@NotNull, @NotBlank, @Email, @Size(min=,max=), @Pattern(regexp=), etc. from jakarta.validation.constraints

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