the_validator 0.0.1

A simple form and data validation for flutter

The Validator

A simple & lightweight form and data validation

How to use

The Validator can be used directly on a TextFormField validator parameter TextFormField(validator: FieldValidator.email())

The Validator can also be used as a stand alone validator Validatror.isPassword('SecretPass', shouldContainCapitalLetter: true)

Sample Usage (FieldValidator)

TextFormField( 
    controller: _emailController,
                  validator: FieldValidator.email(),
                  decoration: InputDecoration(labelText: "Email"),
                ),

Then make a call to .validate() to perform

RaisedButton(
  onPressed: () {
    // validate() inputed data
    if (_formKey.currentState.validate()) {

          _scaffoldKey.currentState
          .showSnackBar(SnackBar(content: Text("Yay! we got it right!")));
                      
    }
  },
  child: Text("Submit"),                  
)

Sample Usage 2 (Validator)

var password = 'Secret'
var confirmPassword = 'secret'
if (Validator.isPassword(password, shouldContainCapitalLetter: true)) {
  if (Validator.isEqualTo(password, confirmPassword)) {
    print("Go ahead & grant access")
  } else {
    print("Password mis match")
  }
}

Error messages

By default The Validator will give you a nice default error based on the the type of validation you specify for field or an input. But you can also override the default message

Default Error Messages

FieldValidator.alphaNumeric() will output Field must contain both alphabets and numbers

User Defined Error Message

FieldValidator.alphaNumeric(message: 'Your username must contain both numbers & alphabets')