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django - Making list of model into field of another model in django

问题描述

I am totally newbie in django and I am trying to make a restaurant app. I have two models: component and meal, and i want to make a field in meal model that contains a list of components models. Is there any way to do such a thing ? For example sandwich contains bread, cheese and ham. Thanks for your help

标签： djangolistdjango-models

解决方案

在这种情况下，您应该使用ManyToMany。你的模型应该是这样的：

class Component(models.Model):
    name = models.CharField(max_length=255)
    # other fields

class Mean(models.Model):
    components = models.ManyToManyField(Component)

用法：

meal = Mean.objects.create(name = "Sandwich")
bread = Componrnt.objects.create(name='Bread')
mean.components.add(bread)

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