• sample23.rb

  • ¶

    GET request

    get '/sample-23-how-to-view-document-pages-as-images' do
      haml :sample23
    end
  • ¶

    POST request

    post '/sample-23-how-to-view-document-pages-as-images' do
  • ¶

    Set variables

      set :client_id, params[:clientId]
      set :private_key, params[:privateKey]
      set :source, params[:source]
      set :file_id, params[:fileId]
      set :url, params[:url]
      set :base_path, params[:basePath]
    
      begin
  • ¶

    Check required variables

        raise 'Please enter all required parameters' if settings.client_id.empty? or settings.private_key.empty?
  • ¶

    Prepare base path

        if settings.base_path.empty?
          base_path = 'https://api.groupdocs.com'
        elsif settings.base_path.match('/v2.0')
          base_path = settings.base_path.split('/v2.0')[0]
        else
          base_path = settings.base_path
        end
  • ¶

    Configure your access to API server

        GroupDocs.configure do |groupdocs|
          groupdocs.client_id = settings.client_id
          groupdocs.private_key = settings.private_key
  • ¶

    Optionally specify API server and version

          groupdocs.api_server = base_path # default is 'https://api.groupdocs.com'
        end
  • ¶

    Get document by file GUID

        case settings.source
        when 'guid'
  • ¶

    Create instance of File

            file = GroupDocs::Storage::File.new({:guid => settings.file_id})
        when 'local'
  • ¶

    Construct path

            file_path = "#{Dir.tmpdir}/#{params[:file][:filename]}"
  • ¶

    Open file

            File.open(file_path, 'wb') { |f| f.write(params[:file][:tempfile].read) }
  • ¶

    Make a request to API using client_id and private_key

            file = GroupDocs::Storage::File.upload!(file_path, {})
        when 'url'
  • ¶

    Upload file from defined url

            file = GroupDocs::Storage::File.upload_web!(settings.url)
        else
            raise 'Wrong GUID source.'
        end
  • ¶

    Raise exception if something went wrong

        raise 'No such file' unless file.is_a?(GroupDocs::Storage::File)
  • ¶

    Make GroupDocs::Storage::Document instance

        document = file.to_document
  • ¶

    Create new page

        page_image = document.page_images!(700, 700, {})
    
      rescue Exception => e
        err = e.message
      end
  • ¶

    Set variables for template

      haml :sample23,  :locals => {:userId => settings.client_id, :privateKey => settings.private_key, :page_image => page_image, :err => err}
    end