Framework independent workflow library

This is a framework independent workflow library. It provides an step-transition based workflow implementation for processing entities through its life cycle.

Due to its data format and framework independence it does not run as a standalone workflow library. The entity/data implementation and input processing via forms have to be implemented. This workflow library is more a skeleton for your workflow requirements.

Features

The main concept

• An entity processes different steps in its lifecycle.
• The process between two steps is called Transition.
• A transition can depend on conditions which determine if the transition is available.
• Each transition contains a list of actions which are performed to reach the next step.
• Actions can require additional user input to perform the transition.
• User input are handled by a form.

Workflow items

• The Item wraps the entity to provide workflow related information.
• It knows the current state and the whole state history.
• Due to the flexibility of the data structure the EntityId is used to identify an entity.

Worfklow

• An workflow is defined for a specific entities from a specific data provider.
• The workflow is the definition of multiple steps and their transitions.
• A workflow always has one start transition.
• It can have multiple end transitions.

Manager

• There can be multiple workflow definitions for the same data provider.
• The manager selects the matching workflow and creates the transition handler.
• At the moment an item can only be in one workflow.

Permissions

• Transitions and steps can can be limited to an permission.
• Checking the permission and organizing them is part of the current implementation.

More features

• Collection based repositories.
• Transaction save transitions.
• Flexible config system for workflows, steps and transitions.

Requirements

This library requires at least PHP 7.1.

Changelog

See the CHANGELOG.md

Example

You may have a look at the examples.

A concrete implementation is available as integration for CMS Contao netzmacht/contao-workflow.

Credits

This library is heavenly inspired by the great workflow implementation of orocrm plattform and got some concepts from the LexikWorkflowBundle.