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Protect the foreign keys in your Rails models by checking the user_id of self against the user_id of all relations.
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 Dependencies

Development

~> 1.0
~> 1.6
~> 0.7
~> 0.10
~> 10.1
~> 3.0
~> 1.3

Runtime

 Project Readme

foreign_key_validation

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Protect your models by specifying a collection of relations that should be tested for consistency with a predefined column (e.g. user_id).This is useful when the column user_id is used in multiple models. We can check if the user_id of model A matches user_id of model B before saving the records - if the IDs are different, an error will be attached to the errors hash of checked model.

Requirements

ruby >= 1.9.3
active_record & active_support >= 3.2.0

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 below the association definitions (belongs_to, ...) in your model. By default it assumes that it should check all belongs_to relations against the user_id column. So any relation will be checked for a matching user_id.

Change behaviour by calling validate_foreign_keys with arguments hash.

validate_foreign_keys on: :admin_user, with: [:project]

This would only check model.project.admin_user_id to match model.admin_user_id before saving the record.

Configuration

You can customize the default behaviour of the gem by calling the configure method on the module with a block (e.g. initializer).

ForeignKeyValidation.configure do |config|
  config.error_message      = lambda { |key, name, object| "My custom msg!" }
  config.inject_subclasses  = false     # default: true
  config.validate_against   = :admin    # default: :user
end

Tests

Use these commands to run the testsuite against different versions of ActiveRecord

bundle
appraisal install
appraisal rspec

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