Question

我正在尝试在Django-tables2: How to use accessor to bring in foreign columns?和Accessing related models with django-tables2

中显示django-table2中的M2M字段

使用：foreigncolumn = tables.Column（accessor =＆＃39; foreignmodel.foreigncolumnname＆＃39;），我只看到＆＃39; - ＆＃39; ...

# The models:

class Organism(models.Model):
        species_name = models.CharField(max_length=200)
        strain_name = models.CharField(max_length=200)
        eukaryotic = models.BooleanField(default=True)
        lipids = models.ManyToManyField('Lipid',blank=True)

class Lipid(models.Model):
    lm_id = models.CharField(max_length=100)
    common_name = models.CharField(max_length=100,blank=True)
    category = models.CharField(max_length=100,blank=True)

#The tables

class OrganismTable(tables.Table):
    name  = tables.LinkColumn('catalog:organism-detail', text=lambda record: record.species_name, args=[A('pk')])
    lp = tables.Column(accessor='Lipid.common_name')
    class Meta:
        model = Organism
        sequence = ['name','lp']
        exclude = ['id','species_name']

知道我做错了吗？

Answer 1

由于ManyToManyFields工作的简单方式，Accessor对此工作起来并不那么容易。您可以通过repr显示相关QuerySet的{{1}}，但这似乎不够。但是，您可以向'lipids.all'模型添加属性（或方法），并在访问者中使用它。这样，您可以显示与实例相关的任何自定义信息：

Organism

我建议您将class Organism(models.Model): # ... @property def lipid_names(self): return ', '.join(l.common_name for l in self.lipids.all()) # or similar class OrganismTable(tables.Table): # ... lp = tables.Column(accessor='lipid_names')添加到传递给表格的prefetch_related('lipids') Organism，以获得更好的效果。

django-tables 2 M2M字段未显示

1 个答案: