Fix JSON deserialization error in render_j2_template function

ckan2pycsw/model/template.py

@@ -116,34 +116,18 @@ def render_j2_template(mcf: dict, schema_type: str, url: str = None, template_di
             LOGGER.error(msg)
             raise RuntimeError(msg)
 
+        LOGGER.debug('Processing CKAN template to JSON')
+        mcf = update_object_lists(mcf)
+
         try:
-            LOGGER.debug('Processing CKAN template to JSON')
-            mcf = update_object_lists(mcf)
-
             # Render the template and directly attempt to correct and deserialize the JSON string
-            rendered_template = template.render(record=mcf)
-
-            # Remove trailing commas if any (not recommended, better to correct the template).
-            sanitized_json = re.sub(r',\s*([\]}])', r'\1', rendered_template)
-
-            # JSON deserialize 
-            mcf_dict = json.loads(sanitized_json, strict=False)
+            mcf_dict = json.loads(re.sub(r'\\(?!["\\/bfnrtu])', r'\\\\', template.render(record=mcf)), strict=False)
         except json.JSONDecodeError as e:
             LOGGER.error("Error deserializing the template output: %s", e)
-
-             # Optional: Save the generated JSON before deserialisation for debugging purposes.
-            timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
-            error_file_name = f'error_rendered_output_{timestamp}.json'
-            debug_directory =  LOG_DIR / 'errors'
-            os.makedirs(debug_directory, exist_ok=True)
-            error_file_path = os.path.join(debug_directory, error_file_name)
-
-            # Optional: Save the generated JSON before deserialisation for debugging purposes.
-            with open(error_file_path, 'w', encoding='utf-8') as f:
-                f.write(rendered_template)
-            LOGGER.error("Problematic output saved to: %s", error_file_path)
+            # Optionally: Save the problematic output for debugging
+            LOGGER.error("Problematic output: %s", template.render(record=mcf))
             raise
-        
+
         return mcf_dict
 
     if schema_type == 'pygeometa':