Moving labels doesn't work when using virtual fields

[qgib]

Author Name: Jérôme Guélat (Jérôme Guélat)
Original Redmine Issue: 15489
Affected QGIS version: 2.16.1
Redmine category:labelling

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Steps to reproduce the bug (the same workflow is working when using normal fields):

1. Create 2 new virtual fields (for example xlab and ylab)
2. Fill them with NULL
3. Use the 2 new fields in the data defined placement properties of the labeling options
4. Start editing and try to move a label using the "Move label and diagram tool"

It would be very nice to use virtual fields since label placement is very often project specific. It is not very elegant to create many new fields if the same data is used in different projects.

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Virtual fields don't work that way - they aren't editable, just a read only evaluated value.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• easy_fix was configured as 0
• regression was configured as 0

[qgib]

Author Name: Jérôme Guélat (Jérôme Guélat)

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This is now possible using auxiliary storage in QGIS 3

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• status_id was changed from Open to Closed