Rails 5 Attributes from Active Record to Active Model
Before Rails 5, we could use assign_attributes and have bulk assignment of attributes only for objects whose classes are inherited from ActiveRecord::Base class. In Rails 5 we can make use of assign_attributes method and have bulk assignment of attributes even for objects whose classes are not inherited from ActiveRecord::Base. This is possible because the attributes assignment code is now moved f
Rails 5 Retrieving info of failed validations
1class User < ActiveRecord::Base 2 validates :email, presence: true 3end 4 5>> user = User.new 6>> user.valid? 7=> false 8 9>> user.errors.messages 10=> {:email=>["can't be blank"]} 11 Copy In this case, we do not get any information about the type of failed validation as ActiveModel#Errors only gives the attribute name and the translated error message. This works out well for normal apps. But in
Seven Useful ActiveModel Validators | Viget
Article A Guide to Accessibility Resources for Global Accessibility Awareness Day Custom ActiveModel::Validators are an easy way to validate individual attributes on your Rails models. All that's required is a Ruby class that inherits from ActiveModel::EachValidator and implements a validate_each method that takes three arguments: record, attribute, and value. I have written a few lately, so I pin
Presenters to Widgets with ActiveModel::Conversion
Presenters to Widgets with ActiveModel::Conversion Jon Rogers · January 7th, 2014 Rails offers an easy way to render objects in a view that are automatically associated with their own partials. With ActiveModel::Conversion, you can quickly build widgets out of classes (models or presenters or other). The Problem In a recent project, we had several little status/info blocks that we wanted to render
ActiveModel::Dirtyのメソッドを使って変更を感知しよう - Qiita
ActiveRecordを使っていると時々プログラム内でModelオブジェクトの値を変更してから、変更前の値が欲しくなったりすることがある。 そんなときはActiveModel::Dirtyのメソッドを使うとModelのオブジェクトに変更があった時に変更の情報を取得出来る。 # たとえばUserのレコードを一個引っ張ってきて u = User.last => #<User id: 5, age: 19, name: "Kiriko Takemura"> # 変更されていないことが確認出来る u.changes => {} u.changed => [] u.changed? => false # 名前を変更してみる u.name = "Caroline Charonplop Kyary Pamyu Pamyu" # するとchangesが変更されたプロパティの変更前と変更後のデータが取得で
ActiveModel Form Objects
Submitting form data is a common feature of web applications – allowing users to submit their information and giving them feedback whether the information is valid or not. ActiveRecord comes with a powerful set of validators for attributes on a persisted data model. When data is not persisted, or used for other non-active record purposes, Active Model Helper Modules reduce the complexity of valida
Barebone models to use with ActionPack in Rails 4.0 « Plataformatec Blog
Rails 4.0 – current master branch at the time of this writing – has recently got a small – yet very useful – addition: ActiveModel::Model. The implementation is really simple, as you can see below: module ActiveModel module Model def self.included(base) base.class_eval do extend ActiveModel::Naming extend ActiveModel::Translation include ActiveModel::Validations include ActiveModel::Conversion end
josevalim/active_model_serializers - GitHub
Rails Serializers This guide describes how to use Active Model serializers to build non-trivial JSON services in Rails. By reading this guide, you will learn: When to use the built-in Active Model serialization When to use a custom serializer for your models How to use serializers to encapsulate authorization concerns How to create serializer templates to describe the application-wide structure of
Rails 3.0′s ActiveModel: How To Give Ruby Classes Some ActiveRecord Magic
Ruby Weekly is a weekly newsletter covering the latest Ruby and Rails news. One of the biggest benefits of bringing Merb developer Yehuda Katz on board to work on Rails 3.0 has been his relentless pursuit of extracting out all of Rails' magical abilities from their monolithic encasings and into separate, manageable chunks. A case in point is ActiveModel, a new library that provides the model relat
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GitHub - cowbell/active_model-errors_details: Adds ActiveModel::Errors#details to return type of used validator - Backport from Rails 5.0
GitHub - andresbravog/params_for: Rails controller param validation using the ActiveModel power.
GitHub - rails/activemodel-globalid: Serializing models to a single string makes it easy to pass references around
GitHub - spectator/validates_email: validates_email is a Rails 4.2 and above plugin that validates email addresses against RFC 2822 and RFC 3696
GitHub - bcardarella/valid_attribute: Minimalist validation BDD for ActiveModel specs