enterprise_validator 0.0.5

A package which have built in injectable validations, and enables you to create your own.

This package aims to simplify the process of injecting validation rules, to your form fields, taking the single responsibility from SOLID Design pattern, Each class of validation represents a validation rule, which can be applied to your inputs. also you can implement your own validation rules.

Features

• Provide about 16 built-in validations
  • Strings
    • Validating email
    • Validating json
    • Validating required
    • Validating length (Min, Max, Exact)
    • Validating Mobile Phones (Egyptian, Saudi)
    • Validating Regex Pattern
    • Validating Guid
  • Numbers
    • Validating Equal to
    • Validating Not Equal to
    • Validating Not Equal to Zero
    • Validating Range Of

Getting started

 import 'package:enterprise_validator/enterprise_validator.dart';

Usage

Inject Single Validation Rule

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

     // create a reusable instance
     final requiredValidation = IsEmailAddressRule(validationError :'this field is required');

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

Inject Multiple Validation Rules

   // Orders of validation matters, the first rule you add, the first validation fires.

  final passwordRules = MultiValidationRules([  
    IsRequiredRule(validationError: 'password is required'),  
    IsMinimumLengthRule(8, validationError: 'password must be at least 8 digits long'),  
    IsValidPatternRule(r'(?=.*?[#?!@$%^&*-])', validationError: 'passwords must have at least one special character')  
 ]);  
  
  String password;  
  
  Form(  
    key: _formKey,  
    child: Column(children: [  
      TextFormField(  
        obscureText: true,  
        onChanged: (val) => password = val,  
        // assign the the multi validation rules to the TextFormField validator  
        validator: passwordRules,  
      ),  
  
      // using the match validator to confirm password  
      TextFormField(  
        validator: (val) => MatchRule(validationError: 'passwords do not match').validateMatch(val, password),  
      )  
    ]),  
  );  
    

Additional information

• This package is still in its initial stage, which means, it may have break changes.
• This package is a personal attempt to make the process of validation easier, it is open source, you can get the code and add your own custom logic.
• It's open to contribute and contact with me for any future improvements for the package.