我有3个模型,我正尝试访问并显示多对多关系(Django)中“通过”表中的数据。
我尝试显示3件事:
我正在做最后一个。它来自多对多关系的“直通”链接);有什么主意吗?
Models.py:
class Language(models.Model):
LANG = (
('FR', 'FR'),
('EN', 'EN'),
)
lang_selected = models.CharField(max_length=3, choices=LANG, verbose_name='Availlable language')
def __str__(self):
return self.lang_selected
class Artwork(models.Model):
artwork_image = models.CharField(max_length=100, null=True, verbose_name="Artwork image")
version = models.ManyToManyField(Language, through='Artwork_language', verbose_name="link artwork -> language")
def __str__(self):
return self.artwork_image
class Artwork_language(models.Model):
Artwork = models.ForeignKey(Artwork, on_delete=models.CASCADE)
Language = models.ForeignKey(Language, on_delete=models.CASCADE)
artwork_name = models.CharField(max_length=100, null=True, verbose_name="Artwork name")
def __str__(self):
return str(self.Artwork) + " translated to " + str(self.Language)
views.py
class Accueil(TemplateView):
template_name = 'isa/accueil.html'
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['artwork'] = Artwork.objects.all()
context['language'] = Language.objects.all()
context['artwork_language'] = Artwork_language.objects.all()
return context
模板(accueil.html)
<h1>Image | Language translation | Translated name</h1>
{% for artwork in artwork %}
Image : {{ artwork.artwork_image }} <br/>
{% for lang in artwork.version.all %}
Language translation : {{ lang }} <br/>
Translated name : {{ ### }}
{% for i in lang.artwork_language %}
{{ i.artwork_name }}
{% endfor %}
<br/>
{% endfor %}
我在Translated name : {{ ### }}
中做了很多尝试,但是似乎没有任何效果;我完全在错误的道路上吗?
答案 0 :(得分:1)
正如我在评论中所说,您应该遵循与Artwork_language的关系,然后从FK转向“语言”:
{% for artwork_lang in artwork.artwork_language_set.all %}
Language translation : {{ artwork_lang.Language }} <br/>
Translated name : {{ artwork_lang.artwork_name }}
{% endfor %}
答案 1 :(得分:0)
当您访问相关实例(多对多字段的相关管理器)时,无法引用贯通模型的属性。您可以在直通模型中使用fk的默认range("m2").characters
,
related_name