Still stumped with this, now cross-posted to
https://gis.stackexchange.com/questions/474014/changing-attributes-of-a-newly-created-feature-in-python-form-init-code
I noticed that the both the `id(feature)` is always different when I
look at it in either function which suggests the object got copied (by
the `partial()` call?). The same is true for `feature.id()`. As a hack I
tried using a global instead of passing the feature to `on_ok()`.
[insert confused emoji here]
Probably I am blind to something really basic.
Cheers, Hannes
On 04.01.24 16:47, Johannes Kröger (WhereGroup) via QGIS-Developer wrote:
Hey guys,
I feel really dumb and I guess I am missing some basic concept...:
* I have a layer with two attributes: "text" (string) and "int"
(integer).
* I used drag'n'drop form design to have a form with just the "text"
attribute in it.
* I added Python Init Code:
```
from functools import partial
def on_ok(layer, feature):
field_idx = layer.fields().indexOf("int")
attribute_changed = layer.changeAttributeValue(feature.id(),
field_idx, 12345)
if not attribute_changed:
raise Exception("Attribute value could not be changed!")
def my_form_open(dialog, layer, feature):
ok_button = dialog.findChild(QPushButton)
ok_button.clicked.connect(partial(on_ok, layer, feature))
```
So the form does not show an input widget for the "int" field. But
when pressing OK, the code should change the edited feature's "int"
value to 12345.
This works if I edit existing features.
But if I create a new feature, the "int" value will be empty/NULL
instead of 12345.
Any pointers on how to properly update a new feature's attribute
fields, that exist on a layer but are not shown the user with the
QGIS' widgets in the attribute form?
Cheers, Hannes
_______________________________________________
QGIS-Developer mailing list
QGIS-Developer@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
