Add truncate to proposed action description

The show description link only appears if the description is longer than defined length.

app/helpers/proposals_dashboard_helper.rb

@@ -88,6 +88,14 @@ module ProposalsDashboardHelper
     t("dashboard.resource.request_resource")
   end
 
+  def proposed_action_description(proposed_action)
+    raw proposed_action.description.truncate(200)
+  end
+
+  def proposed_action_long_description?(proposed_action)
+    proposed_action.description.length > 200
+  end
+
   def is_new_action_since_last_login?(proposed_action, new_actions_since_last_login)
     if new_actions_since_last_login.present?
       new_actions_since_last_login.include?(proposed_action.id)

app/views/dashboard/_proposed_action.html.erb

@@ -23,12 +23,21 @@
       <% end %>
 
       <% if proposed_action.description.present? %>
-        <a data-toggle="proposed_action_description_<%= dom_id(proposed_action) %>">
-          <small><%= t("dashboard.recommended_actions.show_description") %></small>
-        </a>
-        <div id="proposed_action_description_<%= dom_id(proposed_action) %>" class="hide" data-toggler=".hide">
+        <% if proposed_action_long_description?(proposed_action) %>
+          <div id="truncated_description_<%= dom_id(proposed_action) %>"
+               data-toggler=".hide">
+            <%= proposed_action_description(proposed_action) %>
+          </div>
+          <a data-toggle="proposed_action_description_<%= dom_id(proposed_action) %>
+                          truncated_description_<%= dom_id(proposed_action) %>">
+            <small><%= t("dashboard.recommended_actions.show_description") %></small>
+          </a>
+          <div id="proposed_action_description_<%= dom_id(proposed_action) %>" class="hide" data-toggler=".hide">
+            <%= proposed_action.description.html_safe %>
+          </div>
+        <% else %>
           <%= proposed_action.description.html_safe %>
-        </div>
+        <% end %>
       <% end %>
 
       <% proposed_action.links.each do |link| %>

spec/features/dashboard/dashboard_spec.rb

@@ -56,6 +56,22 @@ feature "Proposal's dashboard" do
     expect(page).to have_content(action.title)
   end
 
+  scenario "Dashboard progress show proposed actions truncated description" do
+    action = create(:dashboard_action, :proposed_action, :active, description: "One short action")
+    action_long = create(:dashboard_action, :proposed_action, :active,
+                          description: "This is a really very long description for a proposed "\
+                                       "action on progress dashboard section, so this description "\
+                                       "should be appear truncated and shows the show description "\
+                                       "link to show the complete description to the users.")
+
+    visit progress_proposal_dashboard_path(proposal)
+
+    expect(page).to have_content(action.description)
+    expect(page).to have_content("This is a really very long description for a proposed")
+    expect(page).to have_selector("#truncated_description_dashboard_action_#{action_long.id}")
+    expect(page).to have_selector("a", text: "Show description")
+  end
+
   scenario "Dashboard progress do not display from the fourth proposed actions", js: true do
     create_list(:dashboard_action, 4, :proposed_action, :active)
     action_5 = create(:dashboard_action, :proposed_action, :active)