我该如何给`def formfield_for_manytomany`一个可编辑对象的ID [英] How can I give `def formfield_for_manytomany` an id of editable object

问题描述

class Report(models.Model):
    precursor = models.ManyToManyField(Precursor)

class ReportAdmin(admin.ModelAdmin):
    def formfield_for_manytomany(self, db_field, request, **kwargs):
        ops_area = Report.objects.get(id=???????).ops_area
        print id
        print ops_area
        if db_field.name == "r_precursor":
            kwargs["queryset"] = Precursor.objects.filter(ops_area=ops_area)
            print kwargs
        return super(ReportAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)

我怎么给 def formfield_for_manytomany 可编辑对象的ID？

How can I give def formfield_for_manytomany an id of editable object?

推荐答案

假设您在 Report 实例正在由 ReportAdmin 编辑，请尝试以下操作：

Assuming you're after the Report instance being edited by the ReportAdmin, try this:

class ReportAdmin(admin.ModelAdmin):
    def get_object(self, request, object_id):
        # Hook obj for use in formfield_for_manytomany
        self.obj = super(ReportAdmin, self).get_object(request, object_id)
        print "Got object:", self.obj
        return self.obj

    def formfield_for_manytomany(self, db_field, request, **kwargs):
        if db_field.name == "r_precursor" and getattr(self, 'obj', None):
            kwargs["queryset"] = Precursor.objects.filter(
                ops_area=self.obj.ops_area)
        return super(ReportAdmin, self).formfield_for_manytomany(
            db_field, request, **kwargs)

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