Django-tables2：如何使用访问器引入外部列？ [英] Django-tables2: How to use accessor to bring in foreign columns?

问题描述

我已经尝试阅读此问题的文档和以前的答案没有多少运气。

I've tried reading the docs and previous answers to this question without much luck.

我有一堆学生课程注册，我想看到其中一些选定的注册与一些属性学生们。没有运气到目前为止...我会请求你的建议！

I've got a bunch of student-course registrations and I'd like to see some of those selected registrations in conjunction with some of the attributes of the students. No luck so far...I'd request your advice!

这是模型：

class Student(models.Model):
    first_name = models.CharField(max_length=50)
    last_name = models.CharField(max_length=50)
    netID = models.CharField(max_length=8)

class Registration(models.Model):
    student = models.ForeignKey(Student)
    course = models.ForeignKey(Course)
    attendance_M = models.BooleanField(default=False)
    attendance_Tu = models.BooleanField(default=False)

这里是tables.py：

and here is the tables.py:

class AttendanceTable(tables.Table):
    netID = tables.Column(accessor='Student.netID')
    first = tables.Column(accessor='Student.first_name')
    last = tables.Column(accessor='Student.last_name')
    class Meta:
        model = Registration
        attrs = {"class": "paleblue"}
        fields = ('attendance_M', 'attendance_Tu',)
        sequence = ('netID', 'first', 'last', 'attendance_M', 'attendance_Tu',)

当我收到有关出勤价值的数据时，学生外国栏目中没有任何内容。

While I'm getting data on the attendance values, there's nothing from the student foreign columns.

netID   First   Last    Attendance M    Attendance Tu
 —         —      —      ✔               ✘ 

如果我用model = Student启动Table，并使用注册表的访问者，这是一样的交易，这是一回事。

And it's the same deal if I start the Table with model = Student and use accessors against the Registration table, it's the same deal.

我觉得我失踪了一些非常概念和关键的 - 请指导我！

I feel like I'm missing something very conceptual and crucial -- please guide me!

推荐答案

列的访问器参数中的模型名称应该是小写的。

The model name in the accessor parameter of the column should be lowercase.

使用 accessor ='student.netID'而不是 accessor ='Student.netID '。

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