We are using the field mapping application QField with QGIS 2.18 for on-site data collection.

I've looked through the documentation and am still unsure, so am bring this question here: Is it possible to use python scripts using the python init function specification in the layer field properties?

I currently use a script to automatically assign object modification date and time. I am looking use this, because as far as I can tell, the now() function only works when the object is created. Updating existing points does not update the now() variable.

Unfortunately, there is currently no Python support for QField.

However, there is a flag to "apply default value on update", as is described in an answer to another question .

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