Simple Validations in the Controller! (Re)Use the familiar ActiveModel::Errors pattern for controller validations, so you already know how this works.
| Project | ControllerValidator |
|---|---|
| gem name | controller_validator |
| license | MIT |
| expert support |  |
| download rank |  |
| version |  |
| dependencies |  |
| code quality |  |
| inline documenation |  |
| continuous integration |  |
| test coverage |  |
| homepage | on Github.com |
| documentation | on Rdoc.info |
| live chat |  |
| Spread |
on Coderbits, on Coderwall |
Add this line to your application's Gemfile:
gem 'controller_validator'And then execute:
$ bundle
Or install it yourself as:
$ gem install controller_validator
See the integration specs!
class ThingController < ApplicationController
def create
@thing = Thing.new
validator = ValidateThingOnCreate.new()
validator.validate_and_push_errors_to(instance: @thing)
# So far save has not been called on @thing, no callbacks have been run, the model is not involved at all
if @thing.errors.any?
render :new
else
if @thing.save
redirect_to @thing_path(id: @thing.id)
else
render :new
end
end
end
end
class ValidateThingOnCreate < ControllerValidator::Validator
# Rules for creating a new thing
# 1. There must not be too many things already
# 2. There must be no Bobs
attr_accessor :too_many, :no_bobs
def initialize()
@too_many = Thing.count > 100
@no_bobs = Bob.count == 0
super
end
def validate!
errors.add(:too_many, "must not be true") if !self.too_many
errors.add(:no_bobs, "must be true") if !self.no_bobs
errors.blank?
end
end- Fork it ( https://github.com/[my-github-username]/controller_validator/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request
