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scaff is a simple command-line utility for generating Dart and Flutter components from template files. It is a very tedious job to keep replicating the boilerplate codes every time you try to add a new component in your app. Using scaff, you can generate dart or flutter components from the custom-defined templates. You can even include template variables in the component files and directories name for easy and flexible scaffolding.

scaff uses 'Mustache templating library' variable schemes for defining and processing the template files.

$ dart pub global activate scaff

$ dart pub global run scaff

Let us create a simple component. First of all, we need to create a working directory and it should contain a scaff.setup.json file. The scaff.setup.json file should contain all the template variables used in the working directory. The component subdirectories and files should be included inside the working directory. The files and directories name may contain template variables as well.

Template variable examples: {{var1}}, {{className}}Base, {{fileName}}_store

The example template directory structure:

component_templates
│   └── general_store_architecture
│       ├── scaff.setup.json
│       └── {{componentName}}
│           ├── {{componentName}}.dart
│           └── {{componentName}}_store.dart

1. Create a new directory in the project root

$ mkdir -p component_templates/general_store_architecture
$ cd component_templates/general_store_architecture

2. Create the component directory

$ mkdir {{componentName}}
$ cd {{componentName}}

3. Create the component template file

$ touch {{componentName}}.dart

4. Add the code to {{componentName}}.dart file

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import '../../data/mobx/{{componentName}}_store.dart';

class {{className}}Screen extends StatelessWidget {
  {{className}}Screen({
    Key key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final {{componentName}} = Provider.of<{{className}}Store>(context);

    return Scaffold(
      body: Center(
        child: Column(),
      ),
    );
  }
}

5. Create the store template file

$ touch {{componentName}}_store.dart

6. Add the code to {{componentName}}_store.dart file

import 'package:mobx/mobx.dart';

abstract class {{className}}StoreBase with Store {
  @observable
  bool dummyValue = false;
}

7. Create the scaff.setup.json file

$ cd ..
$ touch scaff.setup.json

8. Add all the template variables used in the working directory to scaff.setup.json file as

{
  "variables": [
	"componentName",
	"className"
  ],
  "mappedVariables": {
	"componentName": "login",
	"className": "LoginScreen"
  }
}

• variables holds a list of template variables. The CLI will prompt for the user input.
• mappedVariables holds the values for the template variables. The generator will pick values from the mappedVariables automatically, if required.
• You may use either of the one or in combination. CLI will skip the prompt if the value for a template variable is already available inside the mappedVariables.

9. cd into general_store_architecture folder.

$ pwd # it should be pointing to =>  /path/component_templates/general_store_architecture

10. Run scaff globally

$ dart pub global run scaff

11. You will be prompted to:

Enter source directory (/path/component_templates/general_store_architecture) »
Enter destination directory (/path/component_templates/general_store_architecture/__component__) »
Enter template extension (dart) » 
Enter 'componentName' variable value » login
Enter 'className' variable value » Login

12. The destination directory will have the newly generated component. The destination directory structure:

└── login
    ├── login.dart
    └── login_store.dart

• Development and debugging

dart pub global activate --source path /path/to/scaff
dart pub global run scaff

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Please feel free to contact me at [email protected]

• Author: Ganesh Rathinavel
• License: MIT
• Package URL: https://pub.dev/packages/scaff
• Repo URL: https://github.com/ganeshrvel/pub-scaff
• Contacts: [email protected]

scaff | Scaffold Generator for Dart and Flutter. MIT License.

Copyright © 2018-Present Ganesh Rathinavel