exporting events to pdf, excel, and csv format

app/controllers/admin/events_controller.rb

@@ -23,11 +23,18 @@ module Admin
       @tracks_distribution_confirmed = @conference.tracks_distribution(:confirmed)
       @event_distribution = @conference.event_distribution
       @scheduled_event_distribution = @conference.scheduled_event_distribution
+      @pdf_filename = "events_for_#{@conference.short_title}.pdf"
+      @file_name = "events_for_#{@conference.short_title}"
+      @csv_filename = "events_for_#{@conference.short_title}.csv"
 
       respond_to do |format|
         format.html
         # Explicity call #to_json to avoid the use of EventSerializer
         format.json { render json: Event.where(state: :confirmed, program: @program).to_json }
+        format.xlsx { render xlsx: 'index', filename: "#{@file_name}.xlsx" }
+        format.pdf
+        format.csv
+        # format.csv { send_data @events, filename:"#{@file_name}.csv" }
       end
     end
 

app/views/admin/comments/index.html.haml

@@ -1,6 +1,9 @@
-%h1 Comments
-%br
 .row
+  .col-md-12
+    .page-header
+      %h1
+        Comments
+        = "(#{@comments.length})" if @comments.any?
   .col-md-12
     %ul.nav.nav-tabs#commentsTable
       %li.active

app/views/admin/events/index.csv.haml

@@ -0,0 +1,25 @@
+- headers = ['Event ID',
+             'Title',
+             'Abstract',
+             'Start time',
+             'Submitter',
+             'Speaker',
+             'Event Type',
+             'Track',
+             'Difficulty Level',
+             'Room',
+             'State']
+= CSV.generate_line headers
+- @events.each do |event|
+  = CSV.generate_line([event.id, event.title, event.abstract, event.time,
+                       event.submitter.name, event.speaker_names, event.event_type.title,
+                       (event.track.present? ? event.track.name : 'nil'),
+                       (event.difficulty_level.present? ? event.difficulty_level.title : 'nil'),
+                       (event.room.present? ? event.room.name : 'nil'), event.state])
+
+= CSV.generate_line [nil]
+- headers = ['Comment ID', 'Event Title', 'Body', 'User Name']
+= CSV.generate_line headers
+- @events.each do |event|
+  - event.root_comments.each do |comment|
+    = CSV.generate_line([comment.id, event.title, comment.body, comment.user.name])

app/views/admin/events/index.html.haml

@@ -3,8 +3,12 @@
     .page-header
       %h1
         Events
-        - if @events.any?
-          = "(#{@events.length})"
+        = "(#{@events.length})" if @events.any?
+        .btn-group.pull-right
+          - if can? :read, Event
+            = link_to 'Export CSV', admin_conference_program_events_path(@conference.short_title, format: :csv), class: 'btn btn-success'
+            = link_to 'Export PDF', admin_conference_program_events_path(@conference.short_title, format: :pdf), class: 'btn btn-success'
+            = link_to 'Export XLS', admin_conference_program_events_path(@conference.short_title, format: :xlsx), class: 'btn btn-success'
       %p.text-muted
         All the submissions of your speakers
 .row

app/views/admin/events/index.pdf.prawn

@@ -0,0 +1,55 @@
+prawn_document(force_download: true, filename: @pdf_filename, page_layout: :landscape) do |pdf|
+  events_array = []
+  c_array = []
+  header_array = ['Event ID',
+                  'Title',
+                  'Abstract',
+                  'Start time',
+                  'Submitter',
+                  'Speaker',
+                  'Event Type',
+                  'Track',
+                  'Difficulty Level',
+                  'Room',
+                  'State'
+                 ]
+  events_array << header_array
+  @events.each do |event|
+    row = []
+    row << event.id
+    row << event.title
+    row << event.abstract
+    row << event.time.to_s
+    row << event.submitter.name
+    row << event.speaker_names
+    row << event.event_type.title
+    row << (event.track.present? ? event.track.name : '')
+    row << (event.difficulty_level.present? ? event.difficulty_level.title : '')
+    row << (event.room.present? ? event.room.name : '')
+    row << event.state
+    events_array << row
+  end
+
+  comments_array = []
+  header_array = ['Comment ID',
+                  'Event Title',
+                  'Body',
+                  'User name']
+  comments_array << header_array
+  @events.each do |event|
+    event.root_comments.each do |comment|
+      row = []
+      row << comment.id
+      row << event.title
+      row << comment.body
+      row << comment.user.name
+      comments_array << row
+    end
+  end
+
+  pdf.text "#{@conference.short_title} Events", font_size: 25
+  pdf.table events_array, header: true, cell_style: {size: 5, border_width: 1}
+  pdf.move_down 10
+  pdf.text "#{@conference.short_title} Comments", font_size: 25
+  pdf.table comments_array, header: true, cell_style: {size: 5, border_width: 1}
+end

app/views/admin/events/index.xlsx.axlsx

@@ -0,0 +1,41 @@
+wb = xlsx_package.workbook
+wb.add_worksheet(name: 'events') do |sheet|
+  bold_style = wb.styles.add_style(b: true)
+  row = ['Event ID', 'Title', 'Abstract', 'Start time', 'Submitter', 'Speaker', 'Event Type', 'Track', 'Difficulty Level', 'Room', 'State']
+
+  sheet.add_row row, style: bold_style
+
+  @events.each do |event|
+    row = []
+    row << event.id
+    row << event.title
+    row << event.abstract
+    row << event.time
+    row << event.submitter.name
+    row << event.speaker_names
+    row << event.event_type.title
+    row << (event.track.present? ? event.track.name : '')
+    row << (event.difficulty_level.present? ? event.difficulty_level.title : '')
+    row << (event.room.present? ? event.room.name : '')
+    row << event.state
+    sheet.add_row row
+  end
+end
+
+wb.add_worksheet(name: 'comments') do |sheet|
+  bold_style = wb.styles.add_style(b: true)
+  row = ['Comment ID', 'Event Title', 'Body', 'User Name']
+
+  sheet.add_row row, style: bold_style
+
+  @events.each do |event|
+    event.root_comments.each do |comment|
+      row = []
+      row << comment.id
+      row << event.title
+      row << comment.body
+      row << comment.user.name
+      sheet.add_row row
+    end
+  end
+end