Fix editing of table data with a JSON primary key. Fixes #3912

web/pgadmin/utils/driver/psycopg2/__init__.py

@@ -18,6 +18,7 @@ from flask import session
 from flask_babelex import gettext
 import psycopg2
 from psycopg2.extensions import adapt
+from psycopg2.extras import Json as psycopg2_json
 
 import config
 from pgadmin.model import Server, User
@@ -225,7 +226,14 @@ class Driver(BaseDriver):
 
     @staticmethod
     def qtLiteral(value):
-        adapted = adapt(value)
+        adapted = None
+
+        # adapt function cannot adapt dict data type
+        # Used http://initd.org/psycopg/docs/extras.html#json-adaptation
+        if type(value) == dict:
+            adapted = psycopg2_json(value)
+        else:
+            adapted = adapt(value)
 
         # Not all adapted objects have encoding
         # e.g.