app/views/media/_form.html.erb
<h4>New Media Post</h4>
<%= form_for medium, role: 'form' do |f| %>
<div class='form-group'>
<%= f.label :title, hidden: true %>
<%= f.text_field :title, placeholder: 'Title', class: 'form-control' %>
</div>
<div class='form-group'>
<%= f.label :content, hidden: true %>
<%= f.text_area :content, rows: 15, placeholder: 'Content', class: 'form-control' %>
</div>
<div class='form-group'>
<%= f.submit 'Post', class: 'btn' %>
</div>
<% end %>