ruby on rails - Submitting an array in a form -

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i've been reading question (ruby on rails: submitting array in form) didn't answer question.

i have form:

<div class="signup pull-right">                           <div>                                                    <p style="color: white">create doctor:</p>               <%= form_for(@doctor) |d| %>                            <%= d.text_field :name[1], :placeholder => "name" %>                                                            <%= d.text_field :name[2], :placeholder => "surname" %>                                                         <%= d.text_field :email, :placeholder => "email" %>      <%= d.text_field :password, :placeholder => "password" %>                                                       <%= d.text_field :password_confirmation, :placeholder => "password confirmation" %>                            <%= d.submit "sumbit", class: "btn btn-small btn-primary pull-right", id: "boton" %>                         <% end %>                                              </div>

where name array. want catch name , surname separately , join them inside name[]. couldn't found way easily. have suggestion?

thanks in advance.

i check till have html generated:

<input name='doctor[name][]'>

i try:

<%= text_field_tag 'doctor[name][]' %>

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