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

docs/en_US/release_notes_4_3.rst

@@ -21,6 +21,7 @@ Bug fixes
 | `Bug #3544 <https://redmine.postgresql.org/issues/3544>`_ - Make the Query Tool tab titles more concise and useful.
 | `Bug #3873 <https://redmine.postgresql.org/issues/3873>`_ - Fix context sub-menu alignment on Safari.
 | `Bug #3906 <https://redmine.postgresql.org/issues/3906>`_ - Fix alignment of Close and Maximize button of Grant Wizard.
+| `Bug #3912 <https://redmine.postgresql.org/issues/3912>`_ - Fix editing of table data with a JSON primary key.
 | `Bug #3942 <https://redmine.postgresql.org/issues/3942>`_ - Close connections gracefully when the user logs out of pgAdmin.
 | `Bug #3946 <https://redmine.postgresql.org/issues/3946>`_ - Fix alignment of checkbox to drop multiple schedules of pgAgent job.
 | `Bug #3959 <https://redmine.postgresql.org/issues/3959>`_ - Optimise display of Dependencies and Dependents, and use on-demand loading of rows in batches of 100.

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
@@ -225,6 +226,13 @@ class Driver(BaseDriver):
 
     @staticmethod
     def qtLiteral(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