Make it possible to select favourites events

Make it possible for users to select events which they want to see in the public schedule and in the All events section of the public schedule.

app/assets/javascripts/osem-schedule.js

@@ -1,3 +1,5 @@
+// ADMIN SCHEDULE
+
 var url; // Should be initialize in Schedule.initialize
 var schedule_id; // Should be initialize in Schedule.initialize
 
@@ -114,6 +116,34 @@ $(document).ready( function() {
   });
 });
 
+
+// PUBLIC SCHEDULE
+
+function starClicked(e){
+  // stops the click from propagating
+  if (!e) var e = window.event;
+  e.preventDefault();
+  e.cancelBubble = true;
+  if (e.stopPropagation) e.stopPropagation();
+
+  var callback = function(data) {
+    $(e.target).toggleClass('fa-star fa-star-o');
+  }
+
+  var params = { favourite_user_id: $(e.target).data('user') };
+  if($(e.target).hasClass('fa-star-o')){
+    params['add'] = true;
+  }
+
+  $.ajax({
+    url: $(e.target).data('url'),
+    type: 'PATCH',
+    data: params,
+    success: callback,
+    dataType : 'json'
+  });
+}
+
 function eventClicked(e, element){
   var url = $(element).data('url');
   if(e.ctrlKey)

app/assets/stylesheets/osem-schedule.scss

@@ -254,6 +254,15 @@ td.no-padding{
   opacity: 0.5;
 }
 
+#star{
+  margin-top: 8px;
+}
+
+#star-events{
+  margin-right: 5px;
+  vertical-align: text-top;
+}
+
 /* Small devices (tablets, 768px and up) */
 @media (min-width: 768px) {
   .room, .event-title{

app/controllers/proposals_controller.rb

@@ -68,6 +68,8 @@ class ProposalsController < ApplicationController
   end
 
   def update
+    respond_to do |format|
+      format.html do
         @url = conference_program_proposal_path(@conference.short_title, params[:id])
 
         track = Track.find_by(id: params[:event][:track_id])
@@ -81,10 +83,22 @@ class ProposalsController < ApplicationController
           redirect_to conference_program_proposals_path(conference_id: @conference.short_title),
                       notice: 'Proposal was successfully updated.'
         else
-      flash.now[:error] = "Could not update proposal: #{@event.errors.full_messages.join(', ')}"
+          flash[:error] = "Could not update proposal: #{@event.errors.full_messages.join(', ')}"
           render action: 'edit'
         end
       end
+      format.json do
+        user = User.find(params[:favourite_user_id])
+        users = @event.favourite_users
+        if users.include? user
+          @event.favourite_users.delete(user)
+        else
+          @event.favourite_users << User.find(params[:favourite_user_id])
+        end
+        render json: {}
+      end
+    end
+  end
 
   def withdraw
     authorize! :update, @event

app/views/schedules/_event.html.haml

@@ -4,11 +4,15 @@
       = image_tag speaker.gravatar_url, :class => "img-circle pull-right all-speaker-pic", |
                                         :alt => speaker.name, |
                                         :title => speaker.name |
-
     %p
       = canceled_replacement_event_label(event, event_schedule)
       = replacement_event_notice(event_schedule)
-
+    - if current_user
+      = link_to('#', onClick: 'starClicked();') do
+        %span#star-events{ class: "fa fa-lg #{ event.favourite_users.exists?(current_user.id) ? 'fa-star' : 'fa-star-o' }", |
+                           "aria-hidden" => "true", |
+                           "data-url" => conference_program_proposal_path(@conference.short_title, event.id), |
+                           "data-user" => current_user.id }
     %span.h3
       = event.title
       %br

app/views/schedules/_schedule_item.html.haml

@@ -1,7 +1,7 @@
 %td.event{ width: "#{ width * span }%" , |
            colspan: span, |
            role: "button" }
-  %a.unstyled-link{href: url_for(conference_program_proposal_path(@conference.short_title, event.id))}
+  %div{ onClick: 'eventClicked(event, this);', "data-url" => "#{url_for(conference_program_proposal_path(@conference.short_title, event.id))}" }
     %div{ class: "elipsis break-words event-title", |
           style: "-webkit-line-clamp: #{ event_lines(@rooms) }; height: #{ event_height(@rooms) }px;"} |
 
@@ -9,9 +9,15 @@
 
       = event.title
 
+    - if current_user
+      = link_to('#', onClick: 'starClicked();') do
+        %span#star{ class: "fa fa-lg #{ event.favourite_users.exists?(current_user.id) ? 'fa-star' : 'fa-star-o' }", |
+                    "aria-hidden" =>"true", |
+                    "data-url" => conference_program_proposal_path(@conference.short_title, event.id), |
+                    "data-user" => current_user.id }
+
     - event.speakers_ordered.each do |speaker|
       = image_tag speaker.gravatar_url, :class => "img-circle pull-right speaker-pic", |
                                         :alt => speaker.name, |
                                         :title => speaker.name, |
                                         :style => "height: #{ speaker_height(@rooms) }px; width: #{ speaker_width(@rooms) }px;"
-