django views.py - 显示正整数文本值

Question

我有一个带有选择列表/正整数字段的模型类。

class AchievementDetails(models.Model, FillableModelWithLanguageVersion): 
    ACADEMIC_ACHIEVEMENT = 1 
    COMMERCIAL_ACHIEVEMENT = 2 
    PERSONAL_ACHIEVEMENT = 3 
    PROFESSIONAL_ACHIEVEMENT = 4 
    SPORTING_ACHIEVEMENT = 5 
    OTHER_ACHIEVEMENT_TYPE = 6 

ACHIEVEMENT_TYPES = (
    (ACADEMIC_ACHIEVEMENT, _('Academic Details')), 
    (COMMERCIAL_ACHIEVEMENT, _('Commercial Achievement')), 
    (PERSONAL_ACHIEVEMENT, _('Personal Achievement')), 
    (PROFESSIONAL_ACHIEVEMENT, _('Professional Achievement')), 
    (SPORTING_ACHIEVEMENT, _('Sporting Achievement')), 
    (OTHER_ACHIEVEMENT_TYPE, _('Other Achievement Type')), 
) 

.... 
achievement_type = models.PositiveIntegerField(choices=ACHIEVEMENT_TYPES) 
.... 

在我的views.py中，我试图显示所选文字的成就类型。例如：学术成就

目前我只能显示选定的数值。例如：1

下面是我在我的views.py代码：

def achievement_details(request): 
    .... 
    for ad in achievement_details: 
     ad.achievement_type_as_text = ad.achievement_type 
    .... 

什么是正确的代码返回ACHIEVEMENT_TYPES的选择的文本？

Answer 1

这就是答案：

https://docs.djangoproject.com/en/dev/ref/models/instances/#django.db.models.Model.get_FOO_display

所以，我的例子中，语法是：

def achievement_details(request): 
.... 
for ad in achievement_details: 
    ad.achievement_type_as_text = ad.get_achievement_type_dispay() 
.... 

我希望t他可以帮助某人。

Answer 2

既然你有一个元组列表要使用类似下面

ACHIEVEMENT_TYPES = (
    (ACADEMIC_ACHIEVEMENT, 'Academic Details'), 
    (COMMERCIAL_ACHIEVEMENT, 'Commercial Achievement'), 
    (PERSONAL_ACHIEVEMENT, 'Personal Achievement'), 
    (PROFESSIONAL_ACHIEVEMENT, 'Professional Achievement'), 
    (SPORTING_ACHIEVEMENT, 'Sporting Achievement'), 
    (OTHER_ACHIEVEMENT_TYPE, 'Other Achievement Type'), 
) 

result = [item for item in ACHIEVEMENT_TYPES if item[0] == ad.achievement_type] 

ad.achievement_type_as_text = result[1]