Remco Hh wrote:
is it possible to define a column in a model, which is not present in the table? this column should return a combination of two other columns.
Model.columnC=Model.columnA+"-"+Model.columnB
A and B are in the table, C isn't
If you just want to grab this value, you just need a standard Ruby method in your model definition:
def columnC columnA + "-" + columnB end
If you want to be able to write to this attribute as well, then you'll have to write a method along the lines of
def columnC=(new_value) columnA, columnB = new_value.split("-") new_value end
although obviously there is some ambiguity with "strings-like-this".
Hope that helps, Chris
