entities.py

"""this contains the template-specific entities' classes"""

from cubes.expense.entities import ExpenseLine as BaseExpenseLine

class ExpenseLine(BaseExpenseLine):

    @property
    def workcase(self):
        rql = 'Any R WHERE E has_lines EL, EL eid %(el)s, E spent_for W, W ref R'
        rset = self._cw.execute(rql, {'el': self.eid}, 'el')
        if rset:
            return rset[0][0]
        return None