Yii2 Workflow

Library to dynamically handle workflows in a database with ROA support.

Travis

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

• Install PHP 7.1 or higher
• Composer Installed

The rest of the requirements are checked by composer when installing the repository on the next step.

Installation

---

You can use composer to install the library tecnocen/yii2-workflow by running the command;

composer require tecnocen/yii2-workflow

or edit the composer.json file

require: {
    "tecnocen/yii2-workflow": "*",
}

Deployment

Then run the required migrations

php yii migrate/up -p=@tecnocen/workflow/migrations

Which will install the following table structure

ROA Backend Usage

---

The ROA support is very simple and can be done by just adding a module version to the api container which will be used to hold the resources.

class Api extends \tecnocen\roa\modules\ApiContainer
{
    public $versions = [
       // other versions
       'w1' => ['class' => 'tecnocen\workflow\roa\modules\Version'],
   ];
}

You can then access the module to check the available resources.

• workflow
• workflow/<workflow_id:\d+>/stage
• workflow/<workflow_id:\d+>/stage/<stage_id:\d+>/transition
• workflow/<workflow_id:\d+>/stage/<stage_id:\d+>/transition/<target_id:\d+>/permission

Which will implement CRUD functionalities for a workflow.

Process and Worklog

---

A process is an entity which changes from stage depending on a workflow. Each stage change is registered on a worklog for each process record.

To create a process its required to create a migrations for the process and the worklog then the models to handle them, its adviced to use the provided migration templates.

class m170101_010101_credit extends EntityTable
{
    public function getTableName()
    {
        return 'credit';
    }

    public function columns()
    {
         return [
             'id' => $this->primaryKey(),
             'workflow_id' => $this->normalKey(),
             // other columns
         ];
    }

    public function foreignKeys()
    {
        return [
            'workflow_id' => ['table' => 'tecnocen_workflow'];
        ];
    }
}

class m170101_010102_credit_worklog extends \tecnocen\workflow\migrations\WorkLog
{
    public function getProcessTableName()
    {
        return 'credit';
    }
}

After running the migrations its necessary to create Active Record models.

class Credit extends \tecnocen\workflow\models\Process
{
    protected function workflowClass()
    {
        return CreditWorklog::class;
    }

    public function getWorkflowId()
    {
        return $this->workflow_id;
    }

    public function rules()
    {
        return \yii\helpers\ArrayHelper::merge(parent::rules(), [
            // other rules here
        ]);
    }
}

class CreditWorkLog extends \tecnocen\workflow\models\WorkLog
{
    public static function processClass()
    {
        return Credit::class;
    }
}

Worklog Resource

---

Each process gets a worklog about the flow of stages it goes through.

On ROA you can declare each worklog as a child resource for the process resource

public $resources = [
   'credit',
   'credit/<credit_id:\d+>/worklog' => [
       'class' => WorklogResource::class,
       'modelClass' => CreditWorklog::class,
   ]
];

Running the tests

This library contains tools to set up a testing environment using composer scripts, for more information see Testing Environment section.

Break down into end to end tests

Once testing environment is setup, run the following commands.

composer deploy-tests

Run tests.

composer run-tests

Run tests with coverage.

composer run-coverage

Live Demo

You can run a live demo on a freshly installed project to help you run testing or understand the responses returned by the server. The live demo is initialized with the command.

php -S localhost:8000 -t tests/_app

Where :8000 is the port number which can be changed. This allows you call ROA services on a browser or REST client.

Use Cases

TO DO

Built With

• Yii 2: The Fast, Secure and Professional PHP Framework http://www.yiiframework.com

Code of Conduct

Please read CODE_OF_CONDUCT.md for details on our code of conduct.

Contributing

Please read CONTRIBUTING.md for details on the process for submitting pull requests to us.

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

Considering SemVer for versioning rules 9, 10 and 11 talk about pre-releases, they will not be used within the Tecnocen-com.

Authors

• Angel Guevara - Initial work - Tecnocen.com
• Carlos Llamosas - Initial work - Tecnocen.com

See also the list of contributors who participated in this project.

License

This project is licensed under the MIT License - see the LICENSE.md file for details

Acknowledgments

• TO DO - Hat tip to anyone who's code was used
• TO DO - Inspiration
• TO DO - etc