download for table

app/controllers/admin/universal_tables_controller.rb

@@ -32,6 +32,25 @@ class Admin::UniversalTablesController < OrbitAdminController
 	    end
 	end
 
+	def checkforthread
+    running = !File.exists?("public/uploads/utable_export/#{params[:utable_id]}/#{params[:utable_title]}.xlsx")
+    render :json => {"status" => running}.to_json
+  end
+
+	def export_data
+		I18n.locale = :zh_tw
+		table = UTable.find(params[:id])
+    title = table.title.gsub(/[ "'*@#$%^&()+=;:.,?>|\\\/<~_!：，、。！？；「」〈〉【】／]/,'')
+    f = "public/uploads/utable_export/#{table.id}/#{title}.xlsx"
+    File.delete(f) if File.exists?(f)
+    url = request.host_with_port
+    Thread.new do
+      system("rake universal_table_tasks:prepare_download[#{table.id},#{url}] >> #{Rails.root}/log/rake.log &")
+    end
+
+    render :json => {"success" => true, "title" => title}.to_json
+	end
+
 	def import_data_from_excel
 		workbook = RubyXL::Parser.parse(params["import_data"].tempfile)
 		response = {}

app/models/table_column.rb

@@ -6,7 +6,7 @@ class TableColumn
 	field :title, localize: true
 	field :display_in_index, type: Boolean, default: true
 	field :type
-	field :date_format, default: "YYYY/MM//DD"
+	field :date_format, default: "YYYY/MM/DD"
 	field :is_link_to_show, type: Boolean, default: false
 	field :order, type: Integer
 	field :make_categorizable, type: Boolean, default: false

app/views/admin/universal_tables/_index.html.erb

@@ -15,6 +15,7 @@
 		            <ul class="nav nav-pills">
 		              <% if can_edit_or_delete?(table) %>
 		                <li><a href="<%= edit_admin_universal_table_path(table) %>"><%= t(:edit) %></a></li>
+		                <li><a href="/admin/universal_tables/<%=table.id.to_s%>/export_data?format=xlsx" data-table-id="<%= table.id.to_s %>" class="export-xls"><%= t('universal_table.export_xls') %></a></li>
 		                <li><a href="<%= admin_universal_table_path(table) %>" class="delete text-error" data-method="delete" data-confirm="Are you sure?"><%= t(:delete_) %></a></li>
 		              <% end %>
 		            </ul>

app/views/admin/universal_tables/index.html.erb

@@ -24,3 +24,73 @@
 		return false;
 	})
 </script>
+<div id="downloadModal" data-backdrop="static" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="downloadModalLabel" aria-hidden="true">
+  <div class="modal-header">
+    <h3 id="downloadModalLabel">Download</h3>
+  </div>
+  <div class="modal-body">
+    <p id="wait-zone" style="text-align: center;">
+    	Please wait while we prepare your download. This may take a while.
+    	<br />
+    	<img src="/assets/spin.gif" />
+    </p>
+    <p id="link-zone" style="display: none; text-align: center;">
+      Please click the link below to download.
+      <br />
+      <a href="" id="download-link" target="_blank">Download</a>
+    </p>
+  </div>
+  <div class="modal-footer">
+    <button class="btn" id="modal-close-btn" style="display:none;" data-dismiss="modal" aria-hidden="true">Close</button>
+  </div>
+</div>
+<script type="text/javascript" src="/assets/lib/process.manager.js"></script>
+<script type="text/javascript">
+
+  var downloadModal = $("#downloadModal"),
+    checkForThread = null,
+    waitZone = $("#wait-zone"),
+    linkZone = $("#link-zone"),
+    downloadLink = $("a#download-link"),
+    modalBtn = $("#modal-close-btn"),
+    processManager = new ProcessManager();
+
+  $(document).on("click", ".export-xls", function(){
+    var link = $(this).attr("href"),
+        title = null,
+        id = $(this).data("table-id");
+    
+    linkZone.hide();    
+    waitZone.show();
+    modalBtn.hide();
+    $.ajax({
+      url : link,
+      type : "get",
+      dataType : "json"
+    }).done(function(data){
+      title = data.title;
+      checkForThread = new Process(function(){
+        $.ajax({
+          url : "/admin/universal_tables/checkforthread",
+          type : "get",
+          data : {"utable_id" : id, "utable_title" : title},
+          dataType : "json"
+        }).done(function(data){
+          if(!data.status){
+            downloadLink.attr("href", "/uploads/utable_export/" + id + "/" + title + ".xlsx");
+            waitZone.hide();
+            linkZone.show();
+            modalBtn.show();
+            checkForThread.kill();
+          }
+        })
+      })
+      checkForThread.setTimeInterval(1000);
+      checkForThread.setRepeat(Process.CONSTANTS.REPEAT_INFINITE);
+      processManager.queue(checkForThread);
+    })
+    downloadModal.modal("show");
+    return false;
+  })
+
+</script>

app/views/utable_export/export.xlsx.axlsx

@@ -0,0 +1,92 @@
+# encoding: utf-8
+
+wb = xlsx_package.workbook
+
+wb.add_worksheet(name: "Structure") do |sheet|
+	heading = sheet.styles.add_style(:b => true, :locked => true)
+	type = sheet.styles.add_style(:i => true)
+
+	row = []
+	row1 = []
+	row2 = []
+
+	table.table_columns.asc(:order).each do |column|
+		case column.type
+		when "text"
+			site_in_use_locales.sort.each do |locale|
+				row << column.title + " - " + t(locale.to_s)
+				row1 << column.key
+				row2 << column.type + "-#{locale}"
+			end
+		when "editor"
+			site_in_use_locales.sort.each do |locale|
+				row << column.title + " - " + t(locale.to_s)
+				row1 << column.key
+				row2 << column.type + "-#{locale}"
+			end
+		when "image"
+			row << column.title
+			row1 << column.key
+			row2 << "Please leave this column blank. Upload the image manually."
+		when "date"
+			row << column.title
+			row1 << column.key
+			row2 << column.type + " : " + column.date_format.upcase
+		when "period"
+			row << column.title + "-From ~ To"
+			row1 << column.key
+			row2 << column.type + " : " + column.date_format.upcase + "-period_from ~ period_to"
+		end
+	end
+
+	sheet.add_row row, :style => heading
+	sheet.add_row row1
+	sheet.add_row row2, :style => type
+
+	table.table_entries.asc(:created_at).each do |entry|
+		row = []
+		table.table_columns.asc(:order).each do |col|
+			column = entry.column_entries.where(:table_column_id => col.id).first
+			case col.type
+			when "text"
+				site_in_use_locales.sort.each do |locale|
+					row << column.text_translations[locale.to_s]
+				end
+			when "editor"
+				site_in_use_locales.sort.each do |locale|
+					row << column.content_translations[locale.to_s]
+				end
+			when "image"
+				if !column.image.url.nil?
+					row << url + column.image.url
+				else
+					row << ""
+				end
+			when "date"
+				case col.date_format
+				when "yyyy/MM/dd hh:mm"
+					row << (column.date.strftime("%Y/%m/%d %H:%M") rescue "")
+				when "yyyy/MM/dd"
+					row << (column.date.strftime("%Y/%m/%d") rescue "")
+				when "yyyy/MM"
+					row << (column.date.strftime("%Y/%m/") rescue "")
+				when "yyyy"
+					row << (column.date.strftime("%Y") rescue "")
+				end
+			when "period"
+				case col.date_format
+				when "yyyy/MM/dd hh:mm"
+					row << (column.period_from.strftime("%Y/%m/%d %H:%M")rescue "")  + " ~ " + (column.period_to.strftime("%Y/%m/%d %H:%M") rescue "")
+				when "yyyy/MM/dd"
+					row << (column.period_from.strftime("%Y/%m/%d")rescue "")  + " ~ " + (column.period_to.strftime("%Y/%m/%d") rescue "")
+				when "yyyy/MM"
+					row << (column.period_from.strftime("%Y/%m")rescue "")  + " ~ " + (column.period_to.strftime("%Y/%m") rescue "")
+				when "yyyy"
+					row << (column.period_from.strftime("%Y")rescue "")  + " ~ " + (column.period_to.strftime("%Y") rescue "")
+				end
+			end
+		end
+		sheet.add_row row
+	end
+
+end

config/locales/en.yml

@@ -9,3 +9,4 @@ en:
     export_structure: Download table structure
     import_from_excel: Import From Excel
     total_number_of_entries: "Total number of enteries found : %{total_number}"
+    export_xls: Export XLSX

config/locales/zh_tw.yml

@@ -9,3 +9,4 @@ zh_tw:
     export_structure: Download table Structure
     import_from_excel: Import From Excel
     total_number_of_entries: "Total number of enteries found : %{total_number}"
+    export_xls: Export XLSX

config/routes.rb

@@ -7,11 +7,15 @@ Rails.application.routes.draw do
    	post "/universal_tables/add_entry", to: 'universal_tables#add_entry'
    	patch "/universal_tables/update_entry", to: 'universal_tables#update_entry'
     post "/universal_tables/import_data_from_excel", to: 'universal_tables#import_data_from_excel'
+    get "universal_tables/checkforthread", to: "universal_tables#checkforthread"
     resources :universal_tables do 
     	get "new_entry"
     	delete "delete_entry"
     	get "edit_entry"
       get "export_structure"
+      member do 
+        get "export_data"
+      end
     end
    end
    get "/xhr/universal_table/export", to: 'universal_tables#export_filtered'

lib/tasks/universal_table_tasks.rake

@@ -2,3 +2,22 @@
 # task :universal_table do
 #   # Task goes here
 # end
+namespace :universal_table_tasks do
+  task :prepare_download,[:utable_id, :url] => :environment do |task,args|
+    id = args.utable_id
+    I18n.locale = :zh_tw
+    table = UTable.find(id)
+    ac = ActionController::Base.new()
+    url = "http://#{args.url}"
+    xlsx = ac.render_to_string handlers: [:axlsx], formats: [:xlsx], template: "utable_export/export", locals: {table: table, site_in_use_locales: Site.first.in_use_locales, url: url}
+    dirname = "public/uploads/utable_export/#{id}"
+    FileUtils.mkdir_p(dirname) unless File.exists?(dirname)
+    f = "#{dirname}/#{table.title.gsub(/[ "'*@#$%^&()+=;:.,?>|\\\/<~_!：，、。！？；「」〈〉【】／]/,'')}.xlsx"
+    if File.exists?(f)
+      File.delete(f)
+    end
+    file = File.open(f, "w")
+    xlsx.force_encoding("utf-8")
+    file.write(xlsx)
+  end
+end