from apps.system.models import CommonAModel
from django.db import models
from django.contrib.auth.models import AbstractUser
from django.db.models.base import Model
import django.utils.timezone as timezone
from django.db.models.query import QuerySet

from utils.model import SoftModel, BaseModel
from apps.mtm.models import Material
from apps.sam.models import Order


class ProductionPlan(CommonAModel):
    """
    生产计划
    """
    number = models.CharField('编号', max_length=50, unique=True)
    order = models.ForeignKey(Order, verbose_name='关联订单', null=True, blank=True, on_delete=models.SET_NULL)
    product = models.ForeignKey(Material, verbose_name='生产产品', on_delete=models.CASCADE)
    count = models.IntegerField('生产数量', default=0)
    start_date = models.DateField('计划开工日期')
    end_date = models.DateField('计划完工日期')

    class Meta:
        verbose_name = '生产计划'
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.number