修改 ModelAdmin 上显示的 DateField 格式 list_display

Question

在我的 ModelAdmin 上，我能够看到 task_date DateField 使用我想要的格式（即 # format='%Y-%m-%d'）。但是，当使用 list_display('task_date') 时，相同的 DateField 会以另一种格式显示。如何指定 list_display 需要用于 DateFields 的格式？

在 models.py

class StaffTimeSheet(models.Model):

    time_sheet_owner = models.ForeignKey("Staff", on_delete=models.CASCADE)
    task_date = models.DateField(verbose_name='Date') # format='%Y-%m-%d'        
    task_belongs_to_order = models.ManyToManyField("Order", related_name = 'order_present_in_timesheet_of')
    task_start_time = models.TimeField()
    task_end_time = models.TimeField()
    service_category = models.ManyToManyField("ServiceCategory", related_name = 'service_category_present_in_timesheet_of')
    task_description = models.TextField()

    def __str__(self):
        return str(self.time_sheet_owner) + " / " + str(self.task_date) + " / " + str(self.task_start_time)

在 admin.py

class StaffTimeSheetModelAdmin(admin.ModelAdmin):
 #determines size of input text box
    formfield_overrides = {
        models.CharField: {'widget': TextInput(attrs={'size':'50'})},
        models.TextField: {'widget': Textarea(attrs={'rows':2, 'cols':50})},
    }

    fields = ['time_sheet_owner','task_date','task_belongs_to_order','task_start_time','task_end_time','service_category','task_description']

    def task_belongs_to_project_order (self,staff_time_sheet_obj):
        return "\n".join([str(order.order_project.project_number) + "-" + str(order.order_number) for order in staff_time_sheet_obj.task_belongs_to_order.all()])

    # TODO enforce a date format year-month-day
    list_display = ('time_sheet_owner','task_date','task_belongs_to_project_order','task_start_time','task_end_time','task_description')

    search_fields = ['task_date','task_description','task_belongs_to_order__order_number','task_belongs_to_order__order_project__project_number'] # TODO add task_belongs_to_project_order
    list_filter = ('time_sheet_owner','task_date',)


admin.site.register(StaffTimeSheet, StaffTimeSheetModelAdmin)

这是创建新的 StaffTimeSheet 对象时 DateField 的样子

这是创建的 StaffTimeSheet 对象的列表，我想在其中修改 task_date DateField

的格式

Answer 1

在那个admin.py里面写一个函数classStaffTimeSheetModelAdmin

    def custom_date_format(self, obj):
      if obj.task_date:
        return "your formatting logic here"
      return ''

在list_display中添加custom_date_format

Answer 2

为了解决这个问题，我不得不做两件事。

按照@Clifton Avil D'Souza 的建议在 class StaffTimeSheetModelAdmin 中编写一个函数
将时间转换成我想要的格式

为了执行第 2 步，我创建了一个名为 day_hour_format_converter 的辅助函数，我必须在其中执行 UTC 到本地时间的转换，因为默认情况下存储在数据库中的时间是 UTC 并且我正在显示错误的小时值

models.py 未修改。这是我更新的代码：

在 admin.py

from django.utils.timezone import now, localtime

def day_hour_format_converter(date_time_UTC):
    local_time = localtime(date_time_UTC)
    return str(local_time.year) +'-'+ str(local_time.month) +'-'+ str(local_time.day) + ' , ' + str(local_time.hour) +':'+ str(local_time.minute) 

class StaffTimeSheetModelAdmin(admin.ModelAdmin):

    formfield_overrides = {
        models.CharField: {'widget': TextInput(attrs={'size':'50'})},
        models.TextField: {'widget': Textarea(attrs={'rows':2, 'cols':50})},
    }

    def task_belongs_to_project_order (self,staff_time_sheet_obj):
        return "\n".join([str(order.order_project.project_number) + "-" + str(order.order_number) for order in staff_time_sheet_obj.task_belongs_to_order.all()])

    def start_time(self, staff_time_sheet_obj):
      if staff_time_sheet_obj.task_start_time:
        return day_hour_format_converter(staff_time_sheet_obj.task_start_time)

    def end_time(self, staff_time_sheet_obj):
      if staff_time_sheet_obj.task_end_time:
        return day_hour_format_converter(staff_time_sheet_obj.task_end_time)


    list_display = ('time_sheet_owner','task_belongs_to_project_order','start_time','end_time','task_description')
    search_fields = ['task_start_time','task_description','task_belongs_to_order__order_number','task_belongs_to_order__order_project__project_number']  #TODO be able to look for "project-order" as a monolitic expression
    list_filter = ('time_sheet_owner','task_start_time')

修改 ModelAdmin 上显示的 DateField 格式 list_display

Modify the DateField format shown on ModelAdmin list_display

django

format

datetime

django-models

django-admin