I wanto make a view that shows product code, product name, qoh(location-1), qoh(location-2) --qoh(location-n). Instead of location-1 and location-2, i want to give location names. How can i do this ?. I don't know how many locations i have and location names. While making view i can give column names in

_columns={
    'product_code':fields.char('SKU',size=250),
    'product_name':fields.char('Product Name',size=250),
    }

How can i get location names here, it's a class definition not  a method definition. I dont have cr,uid values in my hand. Can any one help me please...