My admin has to handle bookings, each booking have a price that depend of many parameters (like room, week, participant...) and so it's calculated (not in my Entity).
I would like to display this price during list, edit & show action. For exemple my list action could display a table like:
lastname | firstname | price
My question is how can I create in my Admin class a new field and get his computed value from a Admin class method or an action of a controller?
