Only use WorkflowState's from latest revision when reporting progress

Also, annotate status_display so we don't use slugs

wagtail/admin/templates/wagtailadmin/shared/workflow_status.html

@@ -7,7 +7,7 @@
     <h2>{{ workflow.name }}</h2>
 
     {% if current_task_number %}
-        {% blocktrans %} Task {{ current_task_number }} of {{ workflow_tasks.count }}{% endblocktrans %}: {{ task.name }}
+        {% blocktrans with workflow_tasks|length as total_tasks %} Task {{ current_task_number }} of {{ total_tasks }}{% endblocktrans %}: {{ task.name }}
     {% else %}
         {% trans 'Task' %}: {{ task.name }}
     {% endif %}

wagtail/admin/views/pages.py

@@ -426,7 +426,7 @@ def edit(request, page_id):
         workflow_tasks = workflow_state.all_tasks_with_status()
 
         # add a warning message if tasks have been approved and may need to be re-approved
-        task_has_been_approved = workflow_tasks.filter(status='approved').exists()
+        task_has_been_approved = any(filter(lambda task: task.status == 'approved', workflow_tasks))
 
         # TODO: add icon to message when we have added a workflows icon
         if request.method == 'GET':
@@ -439,13 +439,13 @@ def edit(request, page_id):
                 ))
 
             # Check for revisions still undergoing moderation and warn
-            if workflow_tasks.count() == 1:
+            if len(workflow_tasks) == 1:
                 # If only one task in workflow, show simple message
                 workflow_info = _("This page is currently awaiting moderation")
             elif current_task_number:
-                workflow_info = format_html(_("<b>Page '{}'</b> is on <b>Task {} of {}: '{}'</b> in <b>Workflow '{}'</b>. "), page.get_admin_display_title(), current_task_number, workflow_tasks.count(), task.name, workflow.name)
+                workflow_info = format_html(_("<b>Page '{}'</b> is on <b>Task {} of {}: '{}'</b> in <b>Workflow '{}'</b>. "), page.get_admin_display_title(), current_task_number, len(workflow_tasks), task.name, workflow.name)
             else:
-                workflow_info = format_html(_("<b>Page '{}'</b> is on <b>Task '{}'</b> in <b>Workflow '{}'</b>. "), page.get_admin_display_title(), current_task_number, workflow_tasks.count(), task.name, workflow.name)
+                workflow_info = format_html(_("<b>Page '{}'</b> is on <b>Task '{}'</b> in <b>Workflow '{}'</b>. "), page.get_admin_display_title(), current_task_number, len(workflow_tasks), task.name, workflow.name)
 
             if task_has_been_approved and getattr(settings, 'WAGTAIL_WORKFLOW_REQUIRE_REAPPROVAL_ON_EDIT', True):
                 messages.warning(request, mark_safe(workflow_info + _("Editing this Page will cause completed Tasks to need re-approval.")), buttons=buttons, extra_tags="workflow")

wagtail/core/models.py

@@ -2846,22 +2846,33 @@ class WorkflowState(models.Model):
 
     def all_tasks_with_status(self):
         """
-        Returns a queryset of Task objects that are linked with this workflow state's
+        Returns a list of Task objects that are linked with this workflow state's
         workflow. The status of that task in this workflow state is annotated in the
-        `.status` field.
+        `.status` field. And a displayable version of that status is annotated in the
+        `.status_display` field.
 
         This is different to querying TaskState as it also returns tasks that haven't
         been started yet (so won't have a TaskState).
         """
-        return self.workflow.tasks.annotate(
-            status=Subquery(
-                TaskState.objects.filter(
-                    task_id=OuterRef('id'),
-                    workflow_state_id=self.id,
-                ).values('status')
+        tasks = list(
+            self.workflow.tasks.annotate(
+                status=Subquery(
+                    TaskState.objects.filter(
+                        task_id=OuterRef('id'),
+                        workflow_state_id=self.id,
+                        page_revision_id=self.page.revisions.order_by('-created_at', '-id').values_list('id', flat=True).first()
+                    ).values('status')
+                ),
             )
         )
 
+        # Manually annotate status_display
+        status_choices = dict(self.STATUS_CHOICES)
+        for task in tasks:
+            task.status_display = status_choices.get(task.status, _("Not started"))
+
+        return tasks
+
     class Meta:
         verbose_name = _('Workflow state')
         verbose_name_plural = _('Workflow states')