update multiple records in one form using checkboxes / wrong number of arguments rails 4

问题

I've been bumbling my way through tutorials/forums in an attempt to figure out how update multiple methods using checkboxes.

I need to be able to list my "events" and check or uncheck them if the date is available. I'd like to do this on one form. I know this is possible, but I'm finally coming here after failing to get it working.

With the code I've posted I'm getting "Wrong Number of Arguments, 2 for 1" error.

I've tried these info sources: http://railscasts.com/episodes/52-update-through-checkboxes http://discuss.codeschool.io/t/surviving-apis-with-rails-posting-multiple-records/4776/4 http://railscasts.com/episodes/165-edit-multiple-revised

Here's where I'm at

routes.rb

resources :events do
  collection do
    put  :verified
    post :make_events
  end
end

events_controller.rb

def verified
  if Event.update_all(["available", true], :id => params[:event_ids])
    redirect_to step2_path(:pid => @project.id,  :u => current_user.id)
  else
  end
end

show.html.erb

<%= form_tag verified_events_path(:pid =>  @project.id ), method: :put  do  %>
  <table class="table-event-dates">
    <thead>
    <tr>
      <th> </th>
      <th> </th>
    </tr>
    </thead>
    <tbody>
    <tr><% @these_events.each do |event| %>

        <td><%= check_box_tag "event_id[]", event.id, :value => event.available  %></td>
        <td><label> <%= event.date.strftime("%A, %b. %d %G") %></label></td>
        </tr>
        </tbody>
      <% end %>
      </table>

  </div><br><!-- panel-body -->
  <div class="panel-footer2">
    <div class="row">
      <%= submit_tag 'Verify Dates',  :class => 'btn btn-green btn-lg btn-block' %>
<% end %>

回答1:

Probably it should work in old-fashioned style:

Event.update_all("available = 1", ["id in (?)", params[:event_ids]])

perhaps available = true or 'true', i'm not sure. Or:

Event.update_all(["available", true], ["id in (?)", params[:event_ids]])

However, maybe you should clear params. Check that they are in correct form (1, 2, 4..).

Also you could try this:

Event.where(id: params[:event_ids]).update_all(available: true)

回答2:

This question has been stale for a while but for what it's worth, the other error in the code provided that NothingToSeeHere mentions in the comment is:

In the view you have singular event_id

<%= check_box_tag "event_id[]", event.id, :value => event.available  %>

In the controller you have plural event_ids

Event.update_all(["available", true], :id => params[:event_ids])

Both the params need to match and be plural. Zishe's last example for how to handle the update on the controller side is the convention for Rails 4.

<%= check_box_tag "event_ids[]", event.id, :value => event.available  %>
Event.where( :id => params[:event_ids] ).update_all( :available => true )

来源：https://stackoverflow.com/questions/25309225/update-multiple-records-in-one-form-using-checkboxes-wrong-number-of-arguments

标签

ruby-on-rails

forms

checkbox

updatemodel