add export button

app/controllers/submissions_export_controller.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+class SubmissionsExportController < ApplicationController
+  before_action :load_template
+
+  def index
+    submissions = @template.submissions.active
+                           .preload(submitters: { documents_attachments: :blob,
+                                                  attachments_attachments: :blob })
+                           .order(id: :asc)
+
+    if params[:format] == 'csv'
+      send_data Submissions::GenerateExportFiles.call(submissions, format: params[:format]),
+                filename: "#{@template.name}.csv"
+    elsif params[:format] == 'xlsx'
+      send_data Submissions::GenerateExportFiles.call(submissions, format: params[:format]),
+                filename: "#{@template.name}.xlsx"
+    end
+  end
+
+  def new; end
+
+  private
+
+  def load_template
+    @template = current_account.templates.find(params[:template_id])
+  end
+end