Fixed an issue where Grant wizard unable to handle multiple objects when the query string parameter exceeds its limit. Fixes #4511

web/pgadmin/tools/grant_wizard/__init__.py

@@ -336,7 +336,7 @@ def properties(sid, did, node_id, node_type):
 
 @blueprint.route(
     '/sql/<int:sid>/<int:did>/',
-    methods=['GET'], endpoint='modified_sql'
+    methods=['POST'], endpoint='modified_sql'
 )
 @login_required
 @check_precondition
@@ -346,13 +346,7 @@ def msql(sid, did):
     """
 
     server_prop = server_info
-    data = {}
-    for k, v in request.args.items():
-        try:
-            data[k] = json.loads(v)
-        except ValueError:
-            data[k] = v
-
+    data = request.form if request.form else json.loads(request.data.decode())
     # Form db connection
     manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(sid)
     conn = manager.connection(did=did)

web/pgadmin/tools/grant_wizard/static/js/grant_wizard.js

@@ -1012,9 +1012,9 @@ define([
                       // Fetches modified SQL
                       $.ajax({
                         url: this.msql_url,
-                        type: 'GET',
+                        type: 'POST',
                         cache: false,
-                        data: self.model.toJSON(true, 'GET'),
+                        data: JSON.stringify(self.model.toJSON(true)),
                         dataType: 'json',
                         contentType: 'application/json',
                       }).done(function(res) {