add RecordsTable field - context-based, i.e. the columns are defined in the object or type

composer/schema/grid/field.py

@@ -282,6 +282,13 @@ class KeyTableFieldInstance(RecordsFieldInstance):
         pass
 
 
+class ContextBasedRecordsFieldInstance(RecordsFieldInstance):
+
+    @Lazy
+    def columnTypes(self):
+        obj = self.clientInstance.context
+        return [Field(name) for name in obj.columnNames]
+
 class ContextBasedKeyTableFieldInstance(KeyTableFieldInstance):
 
     @Lazy

composer/schema/grid/interfaces.py

@@ -51,6 +51,16 @@ class Records(Grid):
                               instanceName='records',))
 
 
+class RecordsTable(Grid):
+
+    __typeInfo__ = ('recordstable',
+                    FieldType('recordstable', 'recordstable',
+                              u'A series of records or rows.',
+                              displayRenderer='display_records',
+                              inputRenderer='input_records',
+                              instanceName='recordstable',))
+
+
 class KeyTable(Grid):
 
     __typeInfo__ = ('keytable',