Support file uploads

This allows submissions to store file uploads

app/controllers/file_uploads_controller.rb

@@ -0,0 +1,8 @@
+class FileUploadsController < ApplicationController
+  def show
+    @form = Form.find_by!(token: params[:form_id])
+    @submission = @form.submissions.find(params[:submission_id])
+    @file_upload = @submission.files_attachments.find(params[:id])
+    redirect_to url_for(@file_upload)
+  end
+end

app/controllers/submissions_controller.rb

@@ -5,14 +5,18 @@ class SubmissionsController < ApplicationController
 
   def create
     @form = Form.find_by!(token: params[:form_id])
-    @submission = @form.submissions.build(data: data_params)
+    # create a new submission object. we need a persisted submission to be able to process
+    # potential the data - to be able to create URLs to uploads which is added as link to the table
+    @submission = @form.submissions.create(remote_ip: request.remote_ip, referrer: request.referer)
+    # processes the submitted data and saves the submission
+    @submission.process_data(data_params)
 
     respond_to do |format|
       if @submission.save
         format.html { redirect_to(@form.thank_you_url) if @form.thank_you_url.present? }
         format.json { render(json: { success: true, data: @submission.data }) }
       else
-        format.html
+        format.html { redirect_to(@form.thank_you_url) if @form.thank_you_url.present? }
         format.json { render(json: { error: @submission.errors }, status: 422) }
       end
     end

app/jobs/submission_append_job.rb

@@ -0,0 +1,8 @@
+class SubmissionAppendJob < ApplicationJob
+  queue_as :default
+
+  def perform(submission_id)
+    submission = Submission.find(submission_id)
+    submission.append_to_spreadsheet
+  end
+end

app/models/submission.rb

@@ -1,17 +1,20 @@
 class Submission < ApplicationRecord
   belongs_to :form
-  after_create :append_to_spreadsheet
-  validates_presence_of :data
+  has_many :file_uploads, dependent: :destroy
+  has_many_attached :files
 
-  def data=(value)
-    sanitized_data = {}
-    value.each do |key, value|
-      sanitized_data[key] = submission_value(value)
+  validates_presence_of :data, if: :appended_at?
+
+  def process_data(submitted_data)
+    processed_data = {}
+    submitted_data.each do |key, value|
+      processed_data[key] = submission_value_for(value)
     end
-    write_attribute(:data, sanitized_data)
+    update_attribute(:data, processed_data)
+    SubmissionAppendJob.perform_later(self.id)
   end
 
-  def submission_value(value)
+  def submission_value_for(value)
     case value
     when Array
       value.join(', ')
@@ -20,7 +23,16 @@ class Submission < ApplicationRecord
     when 'tinyforms_now'
       Time.now.utc.to_formatted_s(:rfc822)
     when ActionDispatch::Http::UploadedFile
-      ''
+      # manually create the ActiveStorage attachment because we need the ID of the Attachment to create the URL
+      # first the file needs to be uplaoded then we can create an Attachment
+      # The CreateOne mainly handles the uplaod and the creation of the blob for us
+      # `files` is the name from `has_many_attached :files`
+      create_one = ActiveStorage::Attached::Changes::CreateOne.new('files', self, value)
+      create_one.upload
+      attachment = ActiveStorage::Attachment.new(record: self, name: 'files', blob: create_one.blob)
+      attachment.save
+      # return the URL that we use to show in the Spreadsheet
+      Rails.application.routes.url_helpers.file_upload_url(form_id: form, submission_id: self, id: attachment.id, host: DEFAULT_HOST)
     else
       value.to_s
     end