我需要你在models.py
中提供帮助from django.db import models
from datetime import datetime
from smart_selects.db_fields import ChainedForeignKey
class Grupo(models.Model):
class Meta:
verbose_name_plural = 'Grupos'
descripcion = models.CharField(max_length=30)
informacion = models.CharField(max_length=100, null=True, blank=True)
fecha = models.DateField(default=datetime.now())
def __unicode__(self):
return self.descripcion
class Origen(models.Model):
class Meta:
verbose_name_plural = 'Origenes'
descripcion = models.CharField(max_length=30)
def __unicode__(self):
return self.descripcion
class Sexo(models.Model):
class Meta:
verbose_name_plural = 'Sexos'
descripcion = models.CharField(max_length=30)
def __unicode__(self):
return self.descripcion
class Genetica(models.Model):
class Meta:
verbose_name_plural = 'Geneticas'
descripcion = models.CharField(max_length=30)
sexo = models.ForeignKey(Sexo)
def __unicode__(self):
return self.descripcion+ " | "+ unicode(self.sexo)
class Raza(models.Model):
class Meta:
verbose_name_plural = 'Razas'
descripcion = models.CharField(max_length=30)
def __unicode__(self):
return self.descripcion
class Productor(models.Model):
class Meta:
verbose_name_plural = 'Productores'
registro = models.IntegerField(max_length=10)
descripcion = models.CharField(max_length=30)
def __unicode__(self):
return unicode(self.registro)+" | "+self.descripcion
class Oveja(models.Model):
class Meta:
verbose_name_plural = 'Ovejas'
tatuaje = models.IntegerField(max_length=10, verbose_name="Nro. de Tatuaje")
sexo = models.ForeignKey(Sexo)
nacimiento = models.DateField(default=datetime.now(), verbose_name="Fecha de Nacimiento")
genetica = ChainedForeignKey(Genetica, chained_field="sexo", chained_model_field="sexo", show_all=False, auto_choose=True)
productor = models.ForeignKey(Productor, verbose_name="Nro. Registro Productor", null=True, blank=True)
origen = models.ForeignKey(Origen)
mama = models.ForeignKey('self', null=True, blank=True)
grupo = models.ForeignKey(Grupo)
def __unicode__(self):
return unicode(self.tatuaje)+ ' | '+unicode(self.productor)
我希望过滤Oveja
实体,当mama
foreignkey all Oveja
但id_sexo=1
这个用于添加新数据时。