获取所有选中的复选框值

Question

i have the following form:

<%= form_for([company,service], :remote => true) do |f| %>
    <%= health_care_insurances.each do |hc_insurance| %>
        <label><%= hc_insurance.name %></label>
        <input id="health_care_insurance_<%= user.id %>" name="<%= hc_insurance.id %>" value="<%= hc_insurance.id %>" type="checkbox"><br/>
    <% end %>
    ...
<% end %>

When it's submited, and for the sake of good performance, i would like to get an array with all "hc_insurance.ids" that are checked. I know i might use javascript to add them to a hidden_field and then pick them up from there, but im not sure that's a good way to go.

Is there any rails way to pick them up from the controller?

Answer 1

Make all the name of the checkboxes the same with array box, like below (this would submit only the checked values to the backend)

<input id="health_care_insurance_<%= user.id %>" name="health_care_insurence_ids[]" value="<%= hc_insurance.id %>" type="checkbox"><br/>

To get the id of all the health_care_insurence in controller (assuming health_care_insurence is a single model).

HealthCareInsurence.pluck(:id)