workflows: mappings display in inspect view (#42239)

tests/test_backoffice_pages.py

@@ -5705,7 +5705,7 @@ def test_backoffice_forms_condition_on_button(pub):
 
 
 def test_workflow_inspect_page(pub):
-    create_superuser(pub)
+    admin = create_user(pub, is_admin=True)
     create_environment(pub, set_receiver=True)
 
     workflow = Workflow.get_default_workflow()
@@ -5729,6 +5729,40 @@ def test_workflow_inspect_page(pub):
     resp = app.get('/backoffice/workflows/%s/inspect' % workflow.id)
     assert '23 hours' in resp.text
 
+    target_formdef = FormDef()
+    target_formdef.name = 'target form'
+    target_formdef.workflow_roles = {'_receiver': 1}
+    target_formdef.backoffice_submission_roles = admin.roles[:]
+    target_formdef.fields = [
+        fields.StringField(id='0', label='string', varname='foo_string'),
+        fields.FileField(id='1', label='file', type='file', varname='foo_file'),
+    ]
+
+    st2 = workflow.add_status('Status2')
+
+    target_formdef.store()
+    create_formdata = CreateFormdataWorkflowStatusItem()
+    create_formdata.id = '_create_formdata'
+    create_formdata.varname = 'resubmitted'
+    create_formdata.draft = True
+    create_formdata.formdef_slug = target_formdef.url_name
+    create_formdata.keep_user = True
+    create_formdata.backoffice_submission = True
+    create_formdata.mappings = [
+        Mapping(field_id='0', expression='=form_var_toto_string'),
+        Mapping(field_id='1', expression='=form_var_toto_file_raw'),
+        Mapping(field_id='2', expression='=form_var_foobar_raw'),
+    ]
+    create_formdata.parent = st2
+    st2.items.append(create_formdata)
+    workflow.store()
+
+    resp = app.get('/backoffice/workflows/%s/inspect' % workflow.id)
+    assert (
+        '<ul class="mappings"><li>string → =form_var_toto_string</li>'
+        '<li>file → =form_var_toto_file_raw</li>'
+        '<li>#2 → =form_var_foobar_raw</li></ul>') in resp.text
+
 
 def test_workflow_comment_required(pub):
     user = create_user(pub)

wcs/wf/create_formdata.py

@@ -285,6 +285,17 @@ class CreateFormdataWorkflowStatusItem(WorkflowStatusItem):
                      title=_('Include new form in the form history'),
                      value=self.attach_to_history)
 
+    def get_mappings_parameter_view_value(self):
+        to_id_fields = {str(field.id): field for field in self.formdef.get_widget_fields()}
+        result = []
+        for mapping in self.mappings or []:
+            try:
+                dest_field = to_id_fields[str(mapping.field_id)]
+                result.append(htmltext('<li>%s → %s</li>') % (dest_field.label, mapping.expression))
+            except KeyError:
+                result.append(htmltext('<li>#%s → %s</li>') % (mapping.field_id, mapping.expression))
+        return htmltext('<ul class="mappings">%s</ul>') % htmltext('').join(result)
+
     def _common_varnames(self):
         '''Compute common varnames between the targeted formdef and all formdefs related to the parent workflow.'''
         assert self.formdef