Django - 如何从枚举返回人类可读的（对于多复选框表单）

Question

我有这段代码，但它只返回较短的变量值“计划 1”、“计划 2”，而不是我在模型中定义的较长的人类可读形式。

我通过调用并传入变量

(correct instance).student_loan_plan.all(), 

并通过“渲染”函数中的“上下文”变量传递该变量，

从 form.py 和 view.py 中生成 HTML 模板中的复选框模型

# U.K. STUDENT LOAN PLAN MODEL
class UK_Student_Loan_Plan(models.Model):

STUDENT_LOAN_PLANS = [
    ('Plan 1', 'Plan 1: English or Welsh student'),
    ('Plan 2', 'Plan 2: English or Welsh who started on 1 September 2012'),
    ('Plan 4', 'Plan 4: Scottish student who started on 1 September 1998'),
    ('Postgraduate', 'Postgraduate: English or Welsh student'),
]
student_loan_plan_id = models.BigAutoField(verbose_name='Student Loan Plan ID', primary_key=True, serialize=False, auto_created=True)
student_loan_plan    = models.CharField(verbose_name='Student Loan Plan', max_length=12, choices=STUDENT_LOAN_PLANS, blank=True, unique=True, null=True) 

def __str__(self):
    return self.student_loan_plan

问题

Q1。如何返回完整的人类可读表单？

我已经尝试过，但没有成功

def __str__(self):
    return self.student_loan_plan.choice

Answer 1

self.get_student_loan_plan_display() # on views.py

{{object.get_student_loan_plan_display}} # on templates