SRY - Multi select documents and download into zip

app/assets/javascripts/documents.js.coffee

@@ -25,7 +25,7 @@ $(document).ready ->
     else
       $('#doc-type-other-field').addClass('d-none')
 
-  $(document).on 'change', '#document_document', -> 
+  $(document).on 'change', '#document_document', ->
    fileName = $(this).val().split('\\').pop()
    $(this).next('.custom-file-label').addClass("selected").html(fileName)
 
@@ -36,3 +36,24 @@ $(document).ready ->
     else
       $('#org_ids').parents('.form-group').removeClass('d-none').addClass('d-flex')
       $('#org_ids').prop('disabled', false).selectpicker('refresh')
+
+  $(document).on 'change', '#documentsTable input[type="checkbox"]', ->
+
+    if $('#documentsTable input[type="checkbox"]:checked').length == 0
+      $('.download-documents').addClass('disabled')
+    else
+      $('.download-documents').removeClass('disabled')
+
+  $(document).on 'click', '.download-documents', ->
+
+    selections = $('#documentsTable input[type="checkbox"]:checked') # get all selected checkboxes
+    document_ids = $.map(selections, (c) -> return c.value) # get ids of all selected documents
+
+    protocol_id = $(this).data( 'protocol-id')
+    href = '/documents/bulk_download.zip?protocol_id=' + protocol_id #build the paramaters to the url
+
+    for id in document_ids
+      href += "&document_ids[]=" + id
+
+    $('.download-documents').attr("href", href)
+

app/controllers/documents_controller.rb

@@ -18,9 +18,50 @@
 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 # TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+require('zip')
+
 class DocumentsController < ApplicationController
   before_action :initialize_service_request
   before_action :authorize_identity
 
   include DocumentsControllerShared
+
+  def bulk_download
+
+    if(params[:protocol_id] && params[:document_ids])
+      @protocol_id = params[:protocol_id]
+      @document_ids = params[:document_ids]
+
+      @documents = Protocol.find(@protocol_id).documents.where(id: @document_ids) #filter the checked documents
+
+      puts @documents
+
+      file_name = "bulk_download_#{@protocol_id}.zip"
+      temp_file = Tempfile.new(file_name)
+
+      respond_to do |format|
+        format.zip do
+          Zip::OutputStream.open(temp_file) { |zos| } #initialize the temp file as a zip file
+
+          Zip::File.open(temp_file.path, Zip::File::CREATE) do |zip| #add files to zip file
+            @documents.each do |doc|
+              doc_path = File.expand_path('../../../public' + doc.document.url, __FILE__)
+              zip.add("#{doc.document_file_name}", doc_path)
+            end
+          end
+
+          zip_data = File.read(temp_file.path) #read binary data from the temp file
+          send_data(zip_data, type: 'application/zip', disposition: 'attachment', filename: file_name) #send the data to the browser as an attachment
+
+          temp_file.close
+          temp_file.unlink
+
+        end
+      end
+
+    end
+
+
+
+  end
 end

app/helpers/documents_helper.rb

@@ -81,4 +81,9 @@ def delete_document_button(document, opts={})
   def document_file_types_as_string
     Document::SUPPORTED_FILE_TYPES.map(&:source).map{ |d| d.gsub('\\', '').gsub('$', '').gsub('?', '') }.join(' ')
   end
+
+  def display_check_box(document)
+    check_box_tag "select-document-#{document.id}", "#{document.id}"
+  end
+
 end

app/views/dashboard/documents/index.json.jbuilder

@@ -1,6 +1,7 @@
 json.(@documents) do |doc|
   permission = current_user.catalog_overlord? || @permission_to_edit || (@admin_orgs & doc.all_organizations).any?
 
+  json.select      display_check_box(doc)
   json.document    display_document_title(doc, permission: permission)
   json.type        doc.display_document_type
   json.uploaded    format_datetime(doc.document_updated_at)

app/views/documents/_table.html.haml

@@ -27,12 +27,16 @@
     #documentsTableToolbar
       - if in_dashboard?
         = new_document_button(protocol_id: protocol.id, permission: permission_to_edit)
+        = link_to icon('fas', 'download mr-2') + t('documents.download'), bulk_download_documents_path(protocol_id: protocol.id, format: :zip), target: :_blank, class: 'btn btn-success download-documents disabled', title: t('documents.tooltips.new'), data: { protocol_id: protocol.id, toggle: 'tooltip' }
+
       - elsif !in_review?
         = new_document_button(srid: service_request.id)
     - url = in_dashboard? ? dashboard_documents_path(format: :json, protocol_id: protocol.id) : documents_path(format: :json, srid: service_request.id)
     %table#documentsTable{ data: { toggle: 'table', search: 'true', 'show-columns' => 'true', 'show-refresh' => 'true', url: url, toolbar: "#documentsTableToolbar" } }
       %thead.bg-light
         %tr
+          - if in_dashboard?
+            %th{ data: { field: 'select', align: "left" } }
           %th{ data: { field: 'document', align: "left", sortable: "true" } }
             = Document.human_attribute_name(:document)
           %th{ data: { field: 'type', align: "left", sortable: "true" } }

config/locales/en.yml

@@ -616,6 +616,7 @@ en:
     created: "Document Uploaded!"
     updated: "Document Updated!"
     destroyed: "Document Destroyed!"
+    download: "Download Selected Documents"
     form:
       supported_types: "Supported File Types:<br>%{file_types}"
       select_type: "Please Select Type"

config/routes.rb

@@ -161,7 +161,13 @@
   resources :visit_groups, only: [:new, :create, :edit, :update, :destroy]
   resources :visits, only: [:edit, :update, :destroy]
 
-  resources :documents, only: [:index, :new, :create, :edit, :update, :destroy]
+  # resources :documents, only: [:index, :new, :create, :edit, :update, :destroy]
+  resources :documents, only: [:index, :new, :create, :edit, :update, :destroy] do
+    collection do
+      get :bulk_download
+    end
+  end
+
 
   resources :notes, only: [:index, :create, :edit, :update, :destroy]