From 530248d4662c7c15c42d082dbfef378a471da428 Mon Sep 17 00:00:00 2001
From: Agrendalath <piotr@surowiec.it>
Date: Fri, 26 May 2023 21:01:43 +0200
Subject: [PATCH] fix: do not use the `runtime.replace_urls` when the runtime
 is not ready

This happens while generating the Block Structures.
---
 problem_builder/__init__.py | 2 +-
 problem_builder/mixins.py   | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/problem_builder/__init__.py b/problem_builder/__init__.py
index b2e51c32..36887081 100644
--- a/problem_builder/__init__.py
+++ b/problem_builder/__init__.py
@@ -1 +1 @@
-__version__ = "5.1.2"
+__version__ = "5.1.3"
diff --git a/problem_builder/mixins.py b/problem_builder/mixins.py
index 166b9d07..f6729735 100644
--- a/problem_builder/mixins.py
+++ b/problem_builder/mixins.py
@@ -295,8 +295,8 @@ def expand_static_url(self, text):
         if not text:
             return text
 
-        if hasattr(self.runtime, 'replace_urls'):
-            text = self.runtime.replace_urls(text)
+        if replace_urls := getattr(self.runtime, 'replace_urls', None):
+            text = replace_urls(text)
         elif hasattr(self.runtime, 'course_id'):
             # edX Studio uses a different runtime for 'studio_view' than 'student_view',
             # and the 'studio_view' runtime doesn't provide the replace_urls API.