app/views/service_categories/_form.html.erb
<%= simple_form_for(service_category) do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input :name %>
<%= f.input :description %>
<%= f.input :price %>
<%= image_tag service_category.image.url(:medium) %>
<%= f.input :image, as: :file %>
</div>
<div class="form-actions">
<%= f.button :submit %>
</div>
<% end %>