app/views/components/edit.html.erb
<%= form_for @component do |f| %>
<div class="box-header">
<h3 class="box-title">Edit Component</h3>
<div class="box-tools pull-right">
<div class="btn-group">
<%= link_to "Cancel",components_path, class: "btn btn-danger" %>
</div>
<%= f.submit "Update", class: "btn btn-primary" %>
</div>
</div>
<div class="box-body">
<div class="form-group">
<%= f.label :variant_id %>
<%= f.text_field :variant_id, class: "form-control"%>
</div>
<div class="form-group">
<%= f.label :quantity %>
<%= f.number_field :quantity, class: "form-control"%>
</div>
<div class="form-group">
<%= f.label :cost %>
<%= f.text_field :cost, class: "form-control", readonly: true %>
</div>
</div>
<% end %>