<%= f.label :name %>
<%= f.text_field :name, placeholder: "Nombre", class: "form-control" %>
<%= f.label :video_man, "Link de video" %>
<%= f.text_field :video_man, placeholder: "Link de video en youtube", class: "form-control" %>
<%= f.label :group %>
<% _group = f.object.group %>
<%= f.label :sub_group, "Subgrupo" %>
<%= f.label :category %>
<%= f.label :description %>
<%= f.text_area :description, placeholder: true, class: "editor form-control" %>