Contents

# foreign_key_validation

Protect your models by specifying a collection of foreign keys that should be tested for consistency with the `belongs_to` relations. For example, when the `user_id` is used in all models we can check if the `user_id` of `model a` matches `user_id` of `model b` before saving the records.

## Requirements
    rails >= 3.2

## Installation

Add this line to your application's Gemfile:

    gem 'foreign_key_validation'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install foreign_key_validation

## Usage

Call `validate_foreign_keys` in your model. By default it assumes that it should check all foreign keys against the `user_id` column. So any relation accessed by `*_id` columns (except `user_id`) would be checked for a matching `user_id` (if the column exists).

Change behaviour by calling `validate_foreign_keys` with arguments hash.

	validate_foreign_keys on: :admin_user_id, with: [:project_id]

This would only check `model.project.admin_user_id` to match `model.admin_user_id`.

## Note

Only tested with ruby 2.x and ActiveRecord

## TODO

- Tests!
- Support Ruby 1.9 (remove keyword arguments)

## Contributing

1. Fork it ( https://github.com/marcusg/foreign_key_validation/fork )
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create a new Pull Request

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
foreign_key_validation-0.0.3	README.md