stats_controller.py 文件源码

def get_student_stats(user):
    stats = {}

    if user.has_perm(get_perm_name(Actions.see.value, UserGroups.student.value, "balance")):
        student_accounts = Account.objects.filter(user__groups__name__contains=UserGroups.student.value)
        balances = [a.balance for a in student_accounts]
        stats.update({
            'sum_money': int(sum(balances)),
            'mean_money': int(statistics.mean(balances))
        })

    if user.has_perm(get_perm_name(Actions.process.value, UserGroups.student.value, "created_transactions")):
        stats.update({'created_students_len': Transaction.objects.filter(
            creator__groups__name__in=[UserGroups.student.value]).filter(state__name=States.created.value).__len__()})

    if user.has_perm(get_perm_name(Actions.process.value, UserGroups.staff.value, "created_transactions")):
        stats.update({'created_staff_len': Transaction.objects.filter(
            creator__groups__name__in=[UserGroups.staff.value]).filter(state__name=States.created.value).__len__()})

    return stats