Ruby-on-rails – Rails link_to or button_to post request with parameters

ruby-on-railsruby-on-rails-3

I have a restful (scaffold generated) controller and model for Votes, I am simply trying to add a field into the view that when clicked, will create a new vote for a given car. It needs to be a POST, What's the way I should be doing this in rails?

<% @cars.each do |car| %>
  <tr>
    <td><%= button_to '+', {:controller => "votes", :action => "create"}, :car_id => car.id, :user_id=> session[:user_id] , :method=>:post  %></td>
    <td><%= car.votes.count %></td>
    <td><%= car.name %></td>
    <td><%= car.code %></td>
    <td><%= car.album %></td>
<% end %>

Best Answer

<td><%= button_to '+', {:controller => "votes", :action => "create", :car_id => car.id, :user_id=> session[:user_id]} , :method=>:post  %></td>

This will make params[:car_id] and params[:user_id] available in VotesController create action.

Related Solutions

Ruby-on-rails – Rails POST, PUT, GET

I believe it's specified by REST. Here's a list for ya:

GET    /items        #=> index
GET    /items/1      #=> show
GET    /items/new    #=> new
GET    /items/1/edit #=> edit
PUT    /items/1      #=> update
POST   /items        #=> create
DELETE /items/1      #=> destroy

Edited to add to get all those routes, in config/routes.rb, simply add map.resources :items

Ruby-on-rails – Rails3 button_to is calling POST action, trying to call PUT action

Your syntax is slightly off. button_to takes three arguments: the button title, an options hash, and an html_options hash. :method=>:put needs to go in html_options, while the route parameters need to go in options. So you can rewrite like so:

<%= button_to "Acknowledged", { :controller => 'practice_sessions',
  :id => @practice_session.id}, 
  :method => :put %>

When clicked the request should be handled by PracticeSessionsController#update

Best Answer

Related Solutions

Ruby-on-rails – Rails POST, PUT, GET

Ruby-on-rails – Rails3 button_to is calling POST action, trying to call PUT action

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