Add example answers form rendering and update viewer iframe

atlas/models.py

@@ -1307,6 +1307,27 @@ class CaseDetail(models.Model):
 
         return json.dumps(results)
 
+    def render_example_form(self, request=None):
+        """Build and return a rendered HTML snippet for the example answers form.
+
+        If `request` is provided it will be passed to the template renderer so
+        csrf tokens and other context processors work correctly. The returned
+        HTML contains the json-editor widget (the `json_answer` field) and a
+        submit button for saving example answers.
+        """
+        from django.template.loader import render_to_string
+        from django.utils.safestring import mark_safe
+        from .forms import JsonAnswerForm
+
+        post_data = {}
+        # Ensure we pass the stored answers into the form so the widget is populated
+        post_data["json_answer"] = json.dumps(self.question_answers) if self.question_answers is not None else json.dumps({})
+
+        form = JsonAnswerForm(post_data, question_schema=self.question_schema)
+
+        html = render_to_string("atlas/_rendered_example_form.html", {"form": form}, request=request)
+        return mark_safe(html)
+
 class CasePrior(models.Model):
     case_detail = models.ForeignKey(CaseDetail, on_delete=models.CASCADE)
     prior_case = models.ForeignKey(Case, on_delete=models.CASCADE, related_name="prior_case")