Improve handling of nulls and default values in the data editor. Fixes #2257

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/column/sql/9.2_plus/nodes.sql

@@ -1,4 +1,5 @@
-SELECT att.attname as name, att.attnum as OID, format_type(ty.oid,NULL) AS datatype
+SELECT att.attname as name, att.attnum as OID, format_type(ty.oid,NULL) AS datatype,
+att.attnotnull as not_null, att.atthasdef as has_default_val
 FROM pg_attribute att
   JOIN pg_type ty ON ty.oid=atttypid
   JOIN pg_namespace tn ON tn.oid=ty.typnamespace

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/column/sql/default/nodes.sql

@@ -1,4 +1,5 @@
-SELECT att.attname as name, att.attnum as OID, format_type(ty.oid,NULL) AS datatype
+SELECT att.attname as name, att.attnum as OID, format_type(ty.oid,NULL) AS datatype,
+att.attnotnull as not_null, att.atthasdef as has_default_val
 FROM pg_attribute att
     JOIN pg_type ty ON ty.oid=atttypid
     JOIN pg_namespace tn ON tn.oid=ty.typnamespace

web/pgadmin/static/css/pgadmin.css

@@ -780,4 +780,4 @@ lgg-el-container[el=md] .pg-el-lg-8,
 }
 .user-language select{
   height: 25px !important;
-}
+}

web/pgadmin/static/js/slickgrid/slick.pgadmin.editors.js

@@ -110,7 +110,12 @@
 
     // When text editor opens
     this.loadValue = function (item) {
-      if (item[args.column.pos] === "") {
+      var col = args.column;
+
+      if (_.isUndefined(item[args.column.pos]) && col.has_default_val) {
+        $input.val("");
+      }
+      else if (item[args.column.pos] === "") {
         $input.val("''");
       }
       else {
@@ -145,7 +150,14 @@
     };
 
     this.isValueChanged = function () {
-      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+      // Use _.isNull(value) for comparison for null instead of
+      // defaultValue == null, because it returns true for undefined value.
+      if ($input.val() == "" && _.isUndefined(defaultValue)) {
+        return false;
+      } else {
+        return (!($input.val() == "" && _.isNull(defaultValue))) &&
+               ($input.val() != defaultValue);
+      }
     };
 
     this.validate = function () {
@@ -253,7 +265,7 @@
 
     this.loadValue = function (item) {
       var data = defaultValue = item[args.column.pos];
-      if (typeof data === "object" && !Array.isArray(data)) {
+      if (data && typeof data === "object" && !Array.isArray(data)) {
         data = JSON.stringify(data);
       } else if (Array.isArray(data)) {
         var temp = [];
@@ -282,7 +294,11 @@
     };
 
     this.isValueChanged = function () {
-      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+      if ($input.val() == "" && _.isUndefined(defaultValue)) {
+        return false;
+      } else {
+        return (!($input.val() == "" && _.isNull(defaultValue))) && ($input.val() != defaultValue);
+      }
     };
 
     this.validate = function () {
@@ -498,6 +514,12 @@
     };
 
     this.validate = function () {
+      if (args.column.validator) {
+        var validationResults = args.column.validator(this.serializeValue());
+        if (!validationResults.valid) {
+          return validationResults;
+        }
+      }
       return {
         valid: true,
         msg: null
@@ -837,7 +859,14 @@
     };
 
     this.isValueChanged = function () {
-      return (!($input.val() == "" && defaultValue == null)) && ($input.val() != defaultValue);
+      if ($input.val() == "" && _.isUndefined(defaultValue)) {
+        return false;
+      } else if ($input.val() == "" && defaultValue == "") {
+        return true;
+      } else {
+        return (!($input.val() == "" && _.isNull(defaultValue ))) &&
+        ($input.val() != defaultValue);
+      }
     };
 
     this.validate = function () {

web/pgadmin/static/js/slickgrid/slick.pgadmin.formatters.js

@@ -19,8 +19,15 @@
   });
 
   function JsonFormatter(row, cell, value, columnDef, dataContext) {
-    if (value == null || value === "") {
-      return "";
+    // If column has default value, set placeholder
+    if (_.isUndefined(value) && columnDef.has_default_val) {
+      return "<span class='pull-left disabled_cell'>[default]</span>";
+    }
+    else if (
+      (_.isUndefined(value) && columnDef.not_null) ||
+      (_.isUndefined(value) || value === null)
+    ) {
+      return "<span class='pull-left disabled_cell'>[null]</span>";
     } else {
       // Stringify only if it's json object
       if (typeof value === "object" && !Array.isArray(value)) {
@@ -42,11 +49,15 @@
   }
 
   function NumbersFormatter(row, cell, value, columnDef, dataContext) {
-    if (_.isUndefined(value) || value === null) {
-      return "<span class='pull-right'>[null]</span>";
+    // If column has default value, set placeholder
+    if (_.isUndefined(value) && columnDef.has_default_val) {
+      return "<span class='pull-right disabled_cell'>[default]</span>";
     }
-    else if (value === "") {
-      return '';
+    else if (
+      (_.isUndefined(value) || value === null || value === "") ||
+      (_.isUndefined(value) && columnDef.not_null)
+    ) {
+      return "<span class='pull-right disabled_cell'>[null]</span>";
     }
     else {
       return "<span style='float:right'>" + _.escape(value) + "</span>";
@@ -57,17 +68,30 @@
     /* Checkbox has 3 states
      * 1) checked=true
      * 2) unchecked=false
-     * 3) indeterminate=null/''
+     * 3) indeterminate=null
      */
-    if (value == null || value === "") {
-      return "<span class='pull-left'>[null]</span>";
+    if (_.isUndefined(value) && columnDef.has_default_val) {
+      return "<span class='pull-left disabled_cell'>[default]</span>";
+    }
+    else if (
+      (_.isUndefined(value) && columnDef.not_null) ||
+      (value == null || value === "")
+    ) {
+      return "<span class='pull-left disabled_cell'>[null]</span>";
     }
     return value ? "true" : "false";
   }
 
   function TextFormatter(row, cell, value, columnDef, dataContext) {
-    if (_.isUndefined(value) || value === null) {
-      return "<span class='pull-left'>[null]</span>";
+    // If column has default value, set placeholder
+    if (_.isUndefined(value) && columnDef.has_default_val) {
+        return "<span class='pull-left disabled_cell'>[default]</span>";
+    }
+    else if (
+      (_.isUndefined(value) && columnDef.not_null) ||
+      (_.isUndefined(value) || _.isNull(value))
+    ) {
+      return "<span class='pull-left disabled_cell'>[null]</span>";
     }
     else {
       return _.escape(value);

web/pgadmin/tools/sqleditor/__init__.py

@@ -441,8 +441,23 @@ def get_columns(trans_id):
     columns = dict()
     columns_info = None
     primary_keys = None
+    rset = None
     status, error_msg, conn, trans_obj, session_obj = check_transaction_status(trans_id)
     if status and conn is not None and session_obj is not None:
+
+        ver = conn.manager.version
+        # Get the template path for the column
+        template_path = 'column/sql/#{0}#'.format(ver)
+        command_obj = pickle.loads(session_obj['command_obj'])
+        if hasattr(command_obj, 'obj_id'):
+            SQL = render_template("/".join([template_path,
+                                            'nodes.sql']),
+                                  tid=command_obj.obj_id)
+            # rows with attribute not_null
+            status, rset = conn.execute_2darray(SQL)
+            if not status:
+                return internal_server_error(errormsg=rset)
+
         # Check PK column info is available or not
         if 'primary_keys' in session_obj:
             primary_keys = session_obj['primary_keys']
@@ -450,10 +465,17 @@ def get_columns(trans_id):
         # Fetch column information
         columns_info = conn.get_column_info()
         if columns_info is not None:
-            for col in columns_info:
+            for key, col in enumerate(columns_info):
                 col_type = dict()
                 col_type['type_code'] = col['type_code']
                 col_type['type_name'] = None
+                if rset:
+                    col_type['not_null'] = col['not_null'] = \
+                        rset['rows'][key]['not_null']
+
+                    col_type['has_default_val'] = col['has_default_val'] = \
+                        rset['rows'][key]['has_default_val']
+
                 columns[col['name']] = col_type
 
         # As we changed the transaction object we need to
@@ -603,6 +625,7 @@ def save(trans_id):
     status, error_msg, conn, trans_obj, session_obj = check_transaction_status(trans_id)
     if status and conn is not None \
             and trans_obj is not None and session_obj is not None:
+        setattr(trans_obj, 'columns_info', session_obj['columns_info'])
 
         # If there is no primary key found then return from the function.
         if len(session_obj['primary_keys']) <= 0 or len(changed_data) <= 0:

web/pgadmin/tools/sqleditor/command.py

@@ -442,6 +442,25 @@ class TableCommand(GridCommand):
 
                 # For newly added rows
                 if of_type == 'added':
+
+                    # When new rows are added, only changed columns data is
+                    # sent from client side. But if column is not_null and has
+                    # no_default_value, set column to blank, instead
+                    # of not null which is set by default.
+                    column_data = {}
+                    column_type = {}
+                    pk_names, primary_keys = self.get_primary_keys()
+
+                    for each_col in self.columns_info:
+                        if (
+                            self.columns_info[each_col]['not_null'] and
+                            not self.columns_info[each_col][
+                                'has_default_val']
+                        ):
+                            column_data[each_col] = None
+                            column_type[each_col] =\
+                                self.columns_info[each_col]['type_name']
+
                     for each_row in changed_data[of_type]:
                         data = changed_data[of_type][each_row]['data']
                         # Remove our unique tracking key
@@ -450,12 +469,19 @@ class TableCommand(GridCommand):
                         data_type = set_column_names(changed_data[of_type][each_row]['data_type'])
                         list_of_rowid.append(data.get('__temp_PK'))
 
+                        # Update columns value and data type
+                        # with columns having not_null=False and has
+                        # no default value
+                        column_data.update(data)
+                        column_type.update(data_type)
+
                         sql = render_template("/".join([self.sql_path, 'insert.sql']),
-                                              data_to_be_saved=data,
+                                              data_to_be_saved=column_data,
                                               primary_keys=None,
                                               object_name=self.object_name,
                                               nsp_name=self.nsp_name,
-                                              data_type=data_type)
+                                              data_type=column_type,
+                                              pk_names=pk_names)
                         list_of_sql.append(sql)
 
                 # For updated rows

web/pgadmin/tools/sqleditor/static/css/sqleditor.css

@@ -420,6 +420,16 @@ input.editor-checkbox:focus {
   background: #e46b6b;
 }
 
+/* Disabled row */
+.grid-canvas .disabled_row {
+  background: #eeeeee;
+}
+
+/* Disabled cell */
+.grid-canvas .disabled_cell {
+  color: #999999;
+}
+
 /* color the first column */
 .sr .sc:first-child {
     background-color: #2c76b4;
@@ -445,4 +455,4 @@ input.editor-checkbox:focus {
 
 .sr.ui-widget-content {
   border-top: 1px solid silver;
-}
+}

web/pgadmin/tools/sqleditor/templates/sqleditor/js/sqleditor.js

@@ -557,7 +557,9 @@ define(
               id: c.name,
               pos: c.pos,
               field: c.name,
-              name: c.label
+              name: c.label,
+              not_null: c.not_null,
+              has_default_val: c.has_default_val
             };
 
             // Get the columns width based on data type
@@ -625,6 +627,12 @@ define(
               }
             }
           }
+          // Disable rows having default values
+          if (!_.isUndefined(self.handler.rows_to_disable) &&
+            _.indexOf(self.handler.rows_to_disable, i) !== -1
+          ) {
+            cssClass += ' disabled_row';
+          }
           return {'cssClasses': cssClass};
         }
 
@@ -702,6 +710,14 @@ define(
         // This will be used to collect primary key for that row
         grid.onBeforeEditCell.subscribe(function (e, args) {
             var before_data = args.item;
+
+            // If newly added row is saved but grid is not refreshed,
+            // then disable cell editing for that row
+            if(self.handler.rows_to_disable &&
+              _.contains(self.handler.rows_to_disable, args.row)) {
+              return false;
+            }
+
             if(self.handler.can_edit && before_data && '__temp_PK' in before_data) {
               var _pk = before_data.__temp_PK,
                 _keys = self.handler.primary_keys,
@@ -1629,6 +1645,8 @@ define(
           self.query_start_time = new Date();
           self.rows_affected = 0;
           self._init_polling_flags();
+          // keep track of newly added rows
+          self.rows_to_disable = new Array();
 
           self.trigger(
             'pgadmin-sqleditor:loading-icon:show',
@@ -2077,7 +2095,9 @@ define(
                     'label': column_label,
                     'cell': col_cell,
                     'can_edit': self.can_edit,
-                    'type': type
+                    'type': type,
+                    'not_null': c.not_null,
+                    'has_default_val': c.has_default_val
                   };
                   columns.push(col);
                 });
@@ -2320,6 +2340,10 @@ define(
                       grid.setSelectedRows([]);
                     }
 
+                    // Add last row(new row) to keep track of it
+                    if (is_added) {
+                      self.rows_to_disable.push(grid.getDataLength()-1);
+                    }
                     // Reset data store
                     self.data_store = {
                       'added': {},