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WithInspection you can validate your inputs inFlutter &Dart likeLaravel Framework.

Add this to your package's pubspec.yaml file:

dependencies:inspection:^0.0.14

Then You can install packages from the command line:

$ pub get

or

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

Now in your Dart code, you can use:

import'package:inspection/inspection.dart';

You have a form , you want to validate inputs everyday in programming . WithInspection you can validate your inputs inDart likeLaravel Framework . See examples below .

You expect a required number with many conditions and rules :In this case , we get help fromInspection helper function .

TextFormField(    validator: (input)=>inspection(input,'required|numeric|between:2000,6000|contains:22,33,55|ends_with:0'),  ),

You can useInspection class :

TextFormField(    validator: (input)=>Inspection().inspect(input,'required|float'),  ),

And you can use helper function andInspection class withList of rules , so you can make a global validation configuration List and you can change your rules in whole of the application whenever you want.

TextFormField(    validator: (input)=>inspection(input, ['required','float']),  ),

or

TextFormField(    validator: (input)=>inspect(input, ['required','float']),  ),

You can set attributename , custommessage andlocale . For example :

TextFormField(    validator: (input)=>inspect(input,'required|float',message:'my custom message here !'),  ),

Inspection supports two languages now .English with code :en , andPersian with codefa andVietnamese with codevi. You can set locale when initializeinspection or in optional parameter ofinspect method. For example :

TextFormField(    validator: (input)=>Inspection(inspectionLocale:'fa').inspect(input,'required|in:farid,farhad'),  ),

or

TextFormField(    validator: (input)=>Inspection().inspect(input,'required|in:farid,farhad',locale:'fa'),  ),

You can simply extend fromInspection class and develop your custom rule . For example :

classCustomInspectionextendsInspection {StringmyCustomRule(ruleString, inspectionCase) {switch (ruleString) {case'myCustomRule':// Your conditional codes here or copy from a Rule class and change it to your own .returnMyCustomeRuleClass(inspectionCase).stringValidation();    }returnnull;  }}

You can help me and contribute for :

• New rules
• More locales
• Better exceptions