<% if @changeset.subscribers.exists?(current_user.id) %>
<input class="action-button" type="submit" name="unsubscribe" value="<%= t("javascripts.changesets.show.unsubscribe") %>" data-method="POST" data-url="<%= changeset_unsubscribe_url(@changeset) %>" />
<% else %>
<% if @changeset.subscribers.exists?(current_user.id) %>
<input class="action-button" type="submit" name="unsubscribe" value="<%= t("javascripts.changesets.show.unsubscribe") %>" data-method="POST" data-url="<%= changeset_unsubscribe_url(@changeset) %>" />
<% else %>
<textarea class="comment" name="text" cols="40" rows="5"></textarea>
<div class="buttons clearfix">
<input type="submit" name="comment" value="<%= t("javascripts.changesets.show.comment") %>" data-changeset-id="<%= @changeset.id %>" data-method="POST" data-url="<%= changeset_comment_url(@changeset) %>" disabled="1" />
<textarea class="comment" name="text" cols="40" rows="5"></textarea>
<div class="buttons clearfix">
<input type="submit" name="comment" value="<%= t("javascripts.changesets.show.comment") %>" data-changeset-id="<%= @changeset.id %>" data-method="POST" data-url="<%= changeset_comment_url(@changeset) %>" disabled="1" />