forms: do not include draft recall block in preview mode (#59816)

tests/form_pages/test_all.py

@@ -2720,6 +2720,16 @@ def test_preview_form(pub):
     assert 'This was only a preview: form was not actually submitted.' in next_page.text
     assert len([x for x in formdef.data_class().select() if not x.is_draft()]) == 0
 
+    # check no drafts are proposed for recall
+    formdef.data_class().wipe()
+    draft = formdef.data_class()()
+    draft.user_id = user.id
+    draft.status = 'draft'
+    draft.data = {}
+    draft.store()
+    resp = login(get_app(pub), username='foo', password='foo').get('/preview/test/')
+    assert 'You already started to fill this form.' not in resp.text
+
 
 def test_form_item_data_source_field_submit(pub):
     def submit_item_data_source_field(ds):

wcs/forms/preview.py

@@ -24,6 +24,7 @@ from .root import FormPage
 
 class PreviewFormPage(FormPage):
     _q_exports = ['', 'tempfile', 'live']
+    preview_mode = True
 
     def check_role(self):
         pass

wcs/templates/wcs/formdata_filling.html

@@ -10,7 +10,7 @@
 
 {% block form-main %}
 {% block drafts-recall %}
-{% if view.initial_drafts %}
+{% if not view.preview_mode and view.initial_drafts %}
   {% with view.initial_drafts|length as drafts_length %}
     <div class="drafts-recall">
      <p>