fix dynamic document preview

app/controllers/templates_form_preview_controller.rb

@@ -13,6 +13,8 @@ class TemplatesFormPreviewController < ApplicationController
 
     @submitter.submission.submitters = @template.submitters.map { |item| Submitter.new(uuid: item['uuid']) }
 
+    Submissions::CreateFromSubmitters.maybe_set_dynamic_documents(@submitter.submission, preview: true)
+
     Submissions.preload_with_pages(@submitter.submission)
 
     @attachments_index = ActiveStorage::Attachment.where(record: @submitter.submission.submitters, name: :attachments)

app/javascript/template_builder/builder.vue

@@ -202,7 +202,7 @@
             </button>
             <div
               class="dropdown dropdown-end"
-              :class="{ 'dropdown-open': isDownloading }"
+              :class="{ 'dropdown-open': isDownloading || isPreviewLoading }"
             >
               <label
                 tabindex="0"
@@ -221,8 +221,16 @@
                     :href="`/templates/${template.id}/form`"
                     data-turbo="false"
                     class="flex items-center justify-center space-x-2"
+                    @click.exact="isPreviewLoading = true"
                   >
-                    <IconEye class="w-6 h-6 flex-shrink-0" />
+                    <IconInnerShadowTop
+                      v-if="isPreviewLoading"
+                      class="animate-spin w-6 h-6 flex-shrink-0"
+                    />
+                    <IconEye
+                      v-else
+                      class="w-6 h-6 flex-shrink-0"
+                    />
                     <span class="whitespace-nowrap">{{ t('save_and_preview') }}</span>
                   </a>
                 </li>
@@ -1122,6 +1130,7 @@ export default {
       documentRefs: [],
       isBreakpointLg: false,
       isDownloading: false,
+      isPreviewLoading: false,
       isLoadingBlankPage: false,
       isSaving: false,
       isDetectingPageFields: false,

lib/submissions/create_from_submitters.rb

@@ -130,13 +130,13 @@ module Submissions
       submission
     end
 
-    def maybe_set_dynamic_documents(submission)
+    def maybe_set_dynamic_documents(submission, preview: false)
       return submission unless submission.template_id?
 
       template = submission.template
 
-      return submission if template.variables_schema.present? ||
-                           submission.variables_schema.present?
+      return submission if !preview && (template.variables_schema.present? ||
+                                        submission.variables_schema.present?)
 
       return submission if template.schema.none? { |e| e['dynamic'] }