PrettyValidation

"Make validations DRY"

You need not write validations generated by database schema.

Features

generate validation modules from database schema to app/validations/ directory
automatically includes validation module into corresponding model

Installation

Add this line to your application's Gemfile:

gem 'pretty_validation'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pretty_validation

Usage

You can generate validation modules in two ways.

run the db:migrate task, and then automatically generates the modules.
run the validation:generate task

Note: The module is overwritten each time the task.

Examples

# db/migrate/20151105090101_create_users.rb
class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :name, null: false
      t.integer :age, null: false
      t.boolean :admin

      t.timestamps null: false
    end
    add_index :users, :name, unique: true
  end
end

# app/validations/user_validation.rb
module UserValidation
  extend ActiveSupport::Concern

  included do
    validates :name, presence: true
    validates :age, presence: true, numericality: true
    validates_uniqueness_of :name
  end
end

# app/models/user.rb
class User < ActiveRecord::Base
end

And run rails console:

Loading development environment (Rails 4.2.4)
irb(main):001:0> user = User.new
=> #<User id: nil, name: nil, age: nil, admin: nil, created_at: nil, updated_at: nil>
irb(main):002:0> user.valid?
  User Exists (0.1ms)  SELECT  1 AS one FROM "users" WHERE "users"."name" IS NULL LIMIT 1
=> false
irb(main):003:0> p user.errors.full_messages
["Name can't be blank", "Age can't be blank", "Age is not a number"]
=> ["Name can't be blank", "Age can't be blank", "Age is not a number"]

Supported versions

Ruby 2.1.x, 2.2.x
Rails 4+

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/sinsoku/pretty_validation.

pretty_validation

Development