<% @grades.each do |grade| %> <% end %>

Lecturer	Lecture	Grade	Comment
<%= grade.lecture.lecturer.login %>	<%= grade.lecture.name %>	<%= grade.grade %>	<% if grade.comment %> <%= grade.comment.html_safe %> <% end %>	<%= link_to 'Comment', edit_grade_path(grade), :class => "w3-button w3-light-blue" %>

<%= form_tag(grades_url, method: "get", class: "w3-margin") do %>

<%= submit_tag("Filter", class: "w3-button w3-light-blue") %>

<%= text_field_tag(:lecturer, "", class: "w3-input w3-border w3-round", placeholder: "Filter by lecturer...", style: "width: 90%") %> <% end %>