activemodel

So I have some data that gets pulled from another rails app in a controller lets call it ExampleController and I want to validate it as being there in my model before allowing the wizard to move to its next step and I can't quite figure out how I should be doing it ( I know that getting this data directly from the controller into the model violates MVC I am looking for the best workaround to get my data from the controller ) . The data must come from the controller as the methods for getting it are contained in ApplicationController however I could do this in the Awizard controller if this is

I created a rails API using postgre database in which i have a model (table) name as counseling_event NOTE: Not using scaffold and using rails-5 My scheman(migration) for counseling_event is as follow: class CreateCounselingEvent < ActiveRecord::Migration[5.0] def change create_table :counseling_event do |t| t.text :name t.datetime :start_time t.datetime :end_time t.text :location t.integer :user_id t.integer :role_id t.timestamps end end end I added a column to the above table, which is of type enum. column name is event_type Now, In my Controller i.e CounselingEventController, in my action

How to impliment ActiveModel associations (tableless nested models)? For example: book has many chapters With ActiveRecord I would create two models and assosiate them with has_many and belongs_to . But ActiveModel doesn't have such functionality. How can I implement this? You simply can't do it that way. It is not active record. You can check ActiveModel documentation (and source code) at : https://github.com/rails/rails/tree/master/activemodel I guess you have to do it old fashion way, using an array of chapters and a reference to the book in the chapters. Hope this helps! With rails

Where are the default validation error messages in Rails 3.0? What is the equivalent of ActiveRecord::Error.default_error_messages[:taken], for example? I have gotten as far as finding that ActiveModel handles the errors rather than ActiveRecord, but I can't find the errors themselves. http://github.com/rails/rails/blob/master/activemodel/lib/active_model/locale/en.yml and http://github.com/rails/rails/blob/master/activerecord/lib/active_record/locale/en.yml :D UPDATE: Maybe you should try to add your own custom error messages? # de.yml activerecord: errors: messages: taken: "ist bereits

When using autocomplete in the console, I often see " _was " postpended to my attributes. But I can't find any documentation or best practices for usage. What does it do and how should it be used? Example: user.fname has the method user.fname_was Using source_location, I've tracked it down to: active_model/attribute_methods.rb", line 296 but there isn't anything specific. That is a part of ActiveModel::Dirty You can see it here https://github.com/rails/rails/blob/af64ac4e5ce8406137d5520fa88e8f652ab703e9/activemodel/lib/active_model/dirty.rb#L146 Example person = Person.find_by_name('Uncle Bob'

I'm having trouble getting fields_for to work on an Array attribute of a non-ActiveRecord model. Distilled down, I have to following: models/parent.rb class Parent extend ActiveModel::Naming include ActiveModel::Conversion include ActiveModel::Validations extend ActiveModel::Translation attr_accessor :bars end controllers/parent_controller.rb def new_parent @parent = Parent.new @parent.bars = ["hello", "world"] render 'new_parent' end views/new_parent.html.haml = form_for @parent, :url => new_parent_path do |f| = f.fields_for :bars, @parent.bars do |r| = r.object.inspect With the code as above