[英]django: Retrieve object via backwards relationship in view.py, not template
Just starting out to program in python and I'm having the following issue. 刚开始用python编程,我遇到了以下问题。 I have a template that shows details on a supplier, each supplier has employees and on the template page, I want to show the names of the employees.
我有一个显示供应商详细信息的模板,每个供应商都有员工,并且在模板页面上,我想显示员工的姓名。 I know how to do it in the template, but how do you do that in the view?
我知道如何在模板中执行此操作,但是如何在视图中执行此操作?
MODELS: 楷模:
class Supplier(models.Model):
co_name = models.CharField(max_length=100)
co_city = models.CharField(max_length=100)
co_state = models.CharField(max_length=2)
class Supplieremployees(models.Model):
supplier = models.ForeignKey(supplier)
expe_fname = models.CharField(max_length=50)
VIEWS: 意见:
def supplier_detail(request, supplier_id):
s = get_object_or_404(Supplier, pk=supplier_id)
**test = s.supplieremployees_set.all()**
return render_to_response('suppliersdb/supplier_detail.html', {'supplier': s})
TEMPLATE: 模板:
...i dont want to use this way, how do i translate this into the view?
{% for supplieremployees in supplier.supplieremployees_set.all %}
<li>IT Focal: {{ supplieremployees.expe_fname }}</li>
{% endfor %}
**TEST: {{ test.expe_fname }}**
nothing shows up for {{ test.expe_fname }} {{test.expe_fname}}没有任何显示
A Supplier
object will have a supplieremployees_set
property that can access the reverse relation: 一个
Supplier
对象将有一个supplieremployees_set
可以访问反向关系属性:
employees = s.supplieremployees_set
You can also supply a related_name
argument to the ForeignKey
and use that: 您还可以为
ForeignKey
提供related_name
参数,并使用该参数:
class Supplieremployees(models.Model):
supplier = models.ForeignKey(Supplier, related_name='employees')
employees = s.employees
def supplier_detail(request, supplier_id):
s = get_object_or_404(Supplier, pk=supplier_id)
for employee in s.supplieremployees_set.all():
print employee.expe_fname
return render_to_response('suppliersdb/supplier_detail.html', {'supplier': s})
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