In Rails, how to handle multiple checked checkboxes, just split on the , or?

Question

Curious what the \'rails way\' of handling the situation when a user checks multiple checkboxes (with the same name value), and it gets posted back to the controller.

<

Answer 1

Here is an example of view and controller for example where multiple cleaners can be in multiple cities.

<%= form_for(@cleaner) do |f| %>
  

    <%= f.label :cities %>

    <% for city in City.all %>
      <%= check_box_tag "cleaner[city_ids][]", city.id, @cleaner.cities.include?(city) %>
      <%=h city.name %>

    <% end %>
  
  

    <%= f.submit %>
  
<% end %>

And in controller

def cleaner_params
  params.require(:cleaner).permit(city_ids: [])
end

You can find complete tutorial on "rails way" of doing this https://kolosek.com/rails-join-table/