griffinqiu/action-draft

Action Draft brings your ActiveRecord model to storage multiple draft attributes without add columns to the business table.

Action Draft

Action Draft brings your ActiveRecord model to storage multiple draft attributes without add columns to the business table.

Features

• Save drafts without add columns to the business table.
• Work any ActiveRecord model, just add has_draft :field_name.
• A apply_draft method for assignment the draft values to actual attributes.
• Fallback to actual attribute value when draft is nil.

Installation

gem "action-draft"

And then execute:

$ bundle
$ rails action_draft:install:migrations

Usage

In your ActiveRecord model:

# app/models/message.rb
class Message < ApplicationRecord
  has_draft :title, :content
end

Now you have draft_title, draft_content attributes.

Then refer to this field in the form for the model:

<%# app/views/messages/_form.html.erb %>
<%= form_with(model: message) do |form| %>
  …
  <div class="field">
    <%= form.label :draft_title %>
    <%= form.textarea :draft_title %>
  </div>

  <div class="field">
    <%= form.label :draft_content %>
    <%= form.textarea :draft_content %>
  </div>
  …
<% end %>

In your controller

class MessagesController < ApplicationController
  def new
    @message = Message.new
  end

  def create
    @message = Message.new(message_params)
    message.apply_draft if message_params[:publish]
    if message.save
      redirect_to messages_path, notice: "Message has created successfully"
    else
      render :new
    end
  end

  def update
    @message.assign_attributes(message_params)
    message.apply_draft if message_params[:publish]
    if message.save
      redirect_to messages_path, notice: "Message has updated successfully"
    else
      render :edit
    end
  end

  private
    def set_message
      @message = Message.find(params[:id])
    end

    def message_params
      params.require(:message).perrmit(:draft_title, :draft_content, :publish)
    end
end

Save draft attributes:

irb> message = Message.new
irb> message.draft_title = "Draft title"
irb> message.draft_title.to_s
"Draft title"
irb> message.draft_content = "Draft message content"
irb> message.draft_content.to_s
"Draft message content"
irb> message.save

irb> message.reload
irb> message.draft_title.to_s
"Draft title"
irb> message.draft_content.to_s
"Draft message content"

Apply draft content:

irb> message = Message.new
irb> message.draft_title = "Message title"
irb> message.apply_draft

irb> message.title
"Message title"
irb> message.draft_title
"Message title"
irb> message.save

License

The gem is available as open source under the terms of the MIT License.