app/views/activities/index.html.erb
<h1>Activities</h1>
<br/>
<% @activities.reverse.each do |activity| %>
<div class="card">
<div class="card-container">
<%= link_to activity.user.username, "/#{activity.user.username}" %>
<% if activity.objective_type == "Meetup"%>
<%= I18n.t 'activity.has_done_meetup' %>
<%= link_to activity.activity_title, meetup_path(activity.objective_id) %>
<% elsif activity.objective_type == "Assistance"%>
<%= I18n.t 'activity.has_done_comment' %>
<% id = Assistance.find(activity.objective_id).session.meetup_id %>
<%= link_to activity.activity_title.truncate(40), meetup_path(id) %>
<%= I18n.t 'activity.in_the_meetup' %>
<%= link_to Meetup.find(id).title, meetup_path(id) %>
<% else %>
<%= I18n.t 'activity.has_done_proposal' %>
<%= link_to activity.activity_title, proposal_path(activity.objective_id) %>
<% end %>
</div>
</div>
<% end %>