[FIX] fix migration if updating old version

Author: sebastienbeau

pattern_import_export/migrations/12.0.4.0.0/post-migrate.py

@@ -6,6 +6,20 @@
 
 @openupgrade.migrate()
 def migrate(env, version):
+    params = {}
+    for field, default_value in [
+        ("pattern_file", "NULL"),
+        ("pattern_file_name", "NULL"),
+        ("pattern_last_generation_date", "NULL"),
+        ("partial_commit", "True"),
+        ("flush_step", "500"),
+        ("export_format", "NULL"),
+    ]:
+        if openupgrade.column_exists(env.cr, "ir_exports", field):
+            params[field] = '"{}"'.format(field)
+        else:
+            params[field] = default_value
+
     env.cr.execute(
         """
         INSERT INTO pattern_config (
@@ -20,15 +34,17 @@ def migrate(env, version):
         )
         SELECT
              use_description,
-             pattern_file,
-             pattern_file_name,
-             pattern_last_generation_date,
-             export_format,
-             partial_commit,
-             flush_step,
+             {p[pattern_file]},
+             {p[pattern_file_name]},
+             {p[pattern_last_generation_date]},
+             {p[export_format]},
+             {p[partial_commit]},
+             {p[flush_step]},
              id
         FROM ir_exports WHERE is_pattern IS TRUE
-        """
+        """.format(
+            p=params
+        )
     )
 
     env.cr.execute(