How to delete multiple checked records in rails? - ruby-on-rails

Question

I figured out how to display checkbox for each row.
The problem is that I can't find out how to write form_tag and submit tag in order to pass the checked rows parameter to messages_controller with using detele action.
and what to write in delete action.
Please help me out!
My view is
<table>
<tr>
<th>delete</th>
<th>ID</th>
<th>Read</th>
<th>Date</th>
<th>Sender</th>
<th>Subject</th>
</tr>
<% #messages.each do |m| %>
<tr>
<td><%= check_box_tag '', m.id, false, class: 'delete_multiple_checkbox', name: "conversations[]" %>
<td><%= m.last_message.id %></td>
<td><%= 'unread' if m.is_unread?(current_user) %></td>
<td><%= m.last_message.created_at %></td>
<td><%= m.last_sender.username %></td>
<td><%= m.subject %></td>
</tr>
<% end %>
</table>
and controller should be something like this( according to this here https://github.com/frodefi/rails-messaging/blob/master/app/controllers/messaging/messages_controller.rb)
def trash
conversation = Conversation.find_by_id(params[:id])
if conversation
current_user.trash(conversation)
flash[:notice] = "Message sent to trash."
else
conversations = Conversation.find(params[:conversations])
conversations.each { |c| current_user.trash(c) }
flash[:notice] = "Messages sent to trash."
end
redirect_to messages_path(box: params[:current_box])
end
route.rb
Example::Application.routes.draw do
root :to => "top#index"
devise_for :users, :controllers => { :registrations => "registrations" }
get 'girls', :to => 'girls#index', :as => :user_root
match '/girls/comment' => 'girls#comment', :via => :post
get "girls/show"
resources :girls
resources :home
devise_for :users do get 'logout' => 'devise/sessions#destroy' end
resources :girls do
collection do
get 'tag'
end
end
resources :contacts
resources :user_profiles
match 'messages/new/:username', :to => 'messages#new'
get "messages/sent"
get "messages/trash"
get "messages/received"
get "messages/show"
get "messages/trash"
match '/messages/deliver' => 'messages#deliver', :via => :post
end

Answer 1

Modify the syntax listed below to fit your requirement:
Model.where(:id => [1,2,3,4,5]).destroy_all
or
Model.where(id: params[:id]).destroy_all

Answer 2

All you have to do is wrap the whole messages rendering block with a form_tag and add a submit_tag wherever you'd like. I assumed your controller is MessagesController under blank namespace and the action is trash. Note that if your controller is under messaging namespace you might want to change the :controller => :messages into :controller => 'messaging/messages'.
<% form_tag :url => { :controller => :messages, :action => :trash}, :method => :delete do %>
<% #messages.each do |m| %>
<tr>
<td><%= check_box_tag '', m.id, false, class: 'delete_multiple_checkbox', name: "conversations[]" %>
<td><%= m.last_message.id %></td>
<td><%= 'unread' if m.is_unread?(current_user) %></td>
<td><%= m.last_message.created_at %></td>
<td><%= m.last_sender.username %></td>
<td><%= m.subject %></td>
</tr>
<% end %>
<%= submit_tag "Trash All Checked" %>
<% end %>
I also assumed your routes.rb accepts a HTTP DELETE method for the specified route. You can check that with rake route | grep messages and verify the route is set.
If it is not you will have to add it with:
resources :messages do
collection do
delete :trash
end
end