[GitHub] [incubator-superset] etr2460 commented on a change in pull request #7993: [Jinja] Make Presto template functions backwards compatible

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etr2460 commented on a change in pull request #7993: [Jinja] Make Presto template functions backwards compatible
URL: https://github.com/apache/incubator-superset/pull/7993#discussion_r311259572
 
 

 ##########
 File path: superset/jinja_context.py
 ##########
 @@ -240,7 +240,39 @@ def _schema_table(
             schema, table_name = table_name.split(".")
         return table_name, schema
 
-    def latest_partition(self, table_name: str):
+    def latest_partition(self, table_name: str) -> str:
+        """
+        Supports the backwards compatible Jinja template API from before
+        https://github.com/apache/incubator-superset/pull/7782. Returns the first
+        (or only) value in the array of all latest partitions for the given table name.
+
+        :param table_name: table name in the format `schema.table`
+        :return: the first (or only) value in the latest partition array
+        """
+
+        return self._first_latest_partition(table_name)
+
+    def _first_latest_partition(self, table_name: str) -> str:
 
 Review comment:
   updated

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