Rails 7 Polymorphic Relationship with Global ID - README

Overview

This is a simple Rails 7 project demonstrating the use of polymorphic relationships with Global ID for handling associations between three models: Person, Company, and Building. In this project, a Building can be associated with either a Person or a Company through polymorphism.

Prerequisites

Ruby 3
Rails 7
PostgreSQL (or any other supported database)

Getting Started

Clone the repository:

git clone https://github.com/italomatos/polymorphic-select.git

Navigate to the project directory:
```
cd polymorphic-select
```
Install dependencies:
```
bundle install
```
Set up the database:
```
rails db:create db:migrate
```
Run the server:
```
rails server
```
The application should now be running at http://localhost:3000.

Usage

1. Creating Records

1.1 Creating a Person:

Navigate to http://localhost:3000/people/new and fill in the details to create a new person.

1.2 Creating a Company:

Navigate to http://localhost:3000/companies/new and provide the necessary information to create a new company.

1.3 Creating a Building:

Navigate to http://localhost:3000/buildings/new and choose either a person or a company to associate with the building.

2. Viewing Associations

Navigate to the details page of a building at http://localhost:3000/buildings/:id, where :id is the ID of the building. Here, you can see the associated person or company.

3. Editing Associations

To change the association of a building, navigate to http://localhost:3000/buildings/:id/edit and select a different person or company.

Polymorphic Relationship Implementation

The key aspect of this project is the use of polymorphic relationships. This is achieved by defining the following associations in the models:

# app/models/building.rb
class Building < ApplicationRecord
  belongs_to :onwer, polymorphic: true

  def onwer_sgid=(value)
    self.onwer = GlobalID::Locator.locate_signed(value)
  end
end

# app/models/person.rb
class Person < ApplicationRecord
  has_many :buildings, as: :owner
end

# app/models/company.rb
class Company < ApplicationRecord
  has_many :buildings, as: :owner
end

This allows a Building to be associated with either a Person or a Company through the owner association.

Contributing

Feel free to contribute to this project by submitting issues or pull requests. Your feedback and contributions are highly appreciated!

License

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