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Dynamic Breadcrumbs / Navigation history in Rails
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| <%# Relevant methods/vars: heading, navigation_add, render_navigation %> | |
| <!DOCTYPE html> | |
| <html> | |
| <%# header content %> | |
| <body> | |
| <section class="content-header"> | |
| <% heading = yield(:heading).truncate(30) %> | |
| <h1><%= heading %></h1> | |
| <% navigation_add (heading), request.fullpath %> | |
| <%= render_navigation %> | |
| </section> | |
| <section class="content"><%= yield %></section> | |
| </body> | |
| </html> | |
| <% | |
| # This should be in separate helpers/navigation_helper.rb | |
| module NavigationHelper | |
| def navigation_add(title, url) | |
| nav_list = session['navigation'].present? ? session['navigation'] : [] | |
| nav_list << { 'title' => title, 'url' => url } | |
| # If first is pointing root, remove it | |
| nav_list.shift if nav_list[0]['url'] == '/' | |
| # If last one is same as its predecessor (except query string), remove it | |
| nav_list.pop if nav_list.length > 1 && (nav_list[-1]['url'].split('?')[0] == nav_list[-2]['url'].split('?')[0]) | |
| # Take last 3 items only (-1 is last, not -0) | |
| nav_list = nav_list[-3..-1] if nav_list.length > 3 | |
| session['navigation'] = nav_list | |
| end | |
| def render_navigation | |
| render partial: 'shared/navigation', locals: { nav_list: session['navigation'] } | |
| end | |
| end | |
| %> |
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