fields: return TableField's original json value (#54881)

tests/api/test_formdef.py

@@ -639,6 +639,7 @@ def test_formdef_submit_with_varname(pub, local_user):
         fields.FileField(id='4', label='foobar4', varname='file'),
         fields.MapField(id='5', label='foobar5', varname='map'),
         fields.StringField(id='6', label='foobar6', varname='foobar6'),
+        fields.TableField(id='7', label='table', varname='table', rows=['Person1', 'Person2'], cols=['Name']),
     ]
     formdef.store()
     data_class = formdef.data_class()
@@ -673,6 +674,7 @@ def test_formdef_submit_with_varname(pub, local_user):
                 'lat': 1.5,
                 'lon': 2.25,
             },
+            'table': [['Name1'], ['Name2']],
         }
     }
     resp = get_app(pub).post_json(url, payload)

wcs/fields.py

@@ -2764,6 +2764,9 @@ class TableField(WidgetField):
                     pass
         return table
 
+    def from_json_value(self, value):
+        return value
+
 
 register_field_class(TableField)