Role-based development is a software development approach that focuses on creating applications based on the specific roles of users. It involves identifying the tasks and responsibilities of each user group and designing software that supports their needs. This leads to more efficient and effective software that improves user satisfaction and productivity.
Roles is a Python library designed for Role-based development with a Pythonic approach to the DCI (Data Context Interaction) pattern. The library offers a unique feature of applying a role to a specific subject instance rather than the subject class. This feature requires constructing a new class. Roles can be given and taken away in any order, and multiple roles can be applied to a single instance.
To get started, a domain class is created, such as the example class Person. By giving the instance a specific role, such as Carpenter, the instance becomes a Person+Carpenter object. The instance still remains an instance of the original class, but now it can perform specific actions associated with the Carpenter role. Additional examples are available in the roles.py file.
In most cases, specific implementations of a role are required for each instance. This can be accomplished by decorating the specific role implementations with the assignto() decorator. For example, a Biker role can be assigned specifically to the Person class using the assignto() decorator. Attempting to assign the Biker role to an instance of a different class will result in a NoRoleException.
Overall, the Roles library provides a unique approach to Role-based development in Python, offering a flexible and customizable solution for assigning and revoking roles to instances of a class.
To get started, a domain class is created, such as the example class Person. By giving the instance a specific role, such as Carpenter, the instance becomes a Person+Carpenter object. The instance still remains an instance of the original class, but now it can perform specific actions associated with the Carpenter role. Additional examples are available in the roles.py file.
In most cases, specific implementations of a role are required for each instance. This can be accomplished by decorating the specific role implementations with the assignto() decorator. For example, a Biker role can be assigned specifically to the Person class using the assignto() decorator. Attempting to assign the Biker role to an instance of a different class will result in a NoRoleException.
Overall, the Roles library provides a unique approach to Role-based development in Python, offering a flexible and customizable solution for assigning and revoking roles to instances of a class.
What's New
Version 0.6.0: N/A