29 May
2015
29 May
'15
4:09 p.m.
I have a default Magritte edit form for a model that maintains a relation
to a single instance of GeoLocation, a model object with two instance
variables: longitude and latitude. The relation is defined as a
MAToOneRelationDescription.
On the form, the instance of GeoLocation is displayed as the integer of the
longitude attribute, however I want a representation like:
lon: 12.67, lat: 34.09
I looked at MAToOneRelationDescription and its superclass
MAElementDescription implements a #display: method which either accepts a
symbol or a block to customize the display. I've implemented a #printString
method with GeoLocation and passed that to the relation description as:
display: #printString
and
display: [ :anObject | ^ anObject printString ]
But as far as I can tell both the symbol and the block get ignored when
displaying the GeoLocation instance in the Magritte form.
What should I change to get the required display?
Thanks,
Roger