app/views/projects/_form.html.erb
<%= form_for(@project, html: {class: "form-horizontal"}) do |f| %>
<div class="col-sm-6 row">
<div class="field form-group">
<div class="col-sm-offset-3 col-sm-9">
<%= render 'shared/errors', model: @project %>
</div>
</div>
<div class="field form-group">
<%= f.label :name, class: "col-sm-3 control-label" %>
<div class="col-sm-9">
<%= f.text_field :name, class: "form-control" %>
</div>
</div>
<div class="actions field form-group">
<div class="col-sm-offset-3 col-sm-9">
<%= f.submit class: "btn btn-primary" %>
</div>
</div>
<br>
</div>
<% end %>