form_field_validator 1.1.0

A straightforward flutter form field validator that provides common validation options.

example/README.md

     // assign it directly to a TextFormField validator
     TextFormField(
         validator: EmailValidator(errorText: 'enter a valid email address')
         );

     // create a reusable instance
     final requiredValidator = RequiredValidator(errorText: 'this field is required');

     // again assign it directly to the validator
     TextFormField(validator: requiredValidator);

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