variable validation

use a function to validate any variable and it will return a bool based on the input

const badEmail = 'QueenRoyal.kingdom';
print(isEmail(badEmail)) // false

const validEmail = 'Queen@Royal.kingdom';
print(isEmail(validEmail)) // true

list of available functions

Form validation

just like the flutter says to do with forms queen do it in the same way just take the burden of the validation logic from you

• create a from , add the fields , set the roles and you are done

Validate Forms

@override
Widget build(BuildContext context) {
return TextFormField(
     // use qValidator function and provider list of rules to apply on this field
    validator: qValidator([
      IsRequired(),
      IsOptional()
      IsEmail(),
      MinLength(8),
      MaxLength(30, "optionally you can override the failure if the validation fails"),
    ]),
  );
  }

list of available Rules

Localize the rule error message

its localized out of the box

override the error message

copy the key and override it in any language you want under the package name 'validation'

QRule

you can build your own rule on the go 😎

@override
Widget build(BuildContext context) {
return TextFormField(
     // use qValidator function and provider list of rules to apply on this field
    validator: qValidator([
      QRule((String input){
        return input.startsWith('050');
      },'must starts with 050'),
    ]),
  );
  }