Question

我有2个模特

class Task(models.Model):
    taskid = models.AutoField(primary_key=True,default = increment_booking_number)
    projectcode = models.ForeignKey('Project', models.DO_NOTHING, db_column='projectid')
    taskname = models.CharField(max_length=100)
    taskdescription = models.TextField(max_length=500, blank=True, null=True)

和

class Project(models.Model):
    projectid = models.AutoField(primary_key=True,default = increment_project_number)
    teamcode = models.ForeignKey('Teammember', models.DO_NOTHING, db_column='teamcode', blank=True, null=True)
    projectname = models.CharField(max_length=40, blank=True, null=True)
    projectdescription = models.CharField(max_length=255, blank=True, null=True)

在我的表单中我想显示项目名称，但它显示“对象对象”

class TaskForm(forms.ModelForm):
    class Meta:
        model = Task
        fields = (
        'projectcode',
        'taskname',
        'taskdescription',)

我试过这样的事：projectname = forms.ModelChoiceField（queryset = Project.objects.all（））但是它不好......

请问任何建议？

Answer 1

class Project(models.Model):
    projectid = models.AutoField(primary_key=True,default = increment_project_number)
    teamcode = models.ForeignKey('Teammember', models.DO_NOTHING, db_column='teamcode', blank=True, null=True)
    projectname = models.CharField(max_length=40, blank=True, null=True)
    projectdescription = models.CharField(max_length=255, blank=True, null=True)

    def __str__(self):
        return self.projectname

将 str 方法添加到您的模型中会很好。更多信息here

Answer 2

好吧，你必须在任务模型

的末尾添加str（）方法

 class Task(models.Model):
    taskid = models.AutoField(primary_key=True,default = increment_booking_number)
    projectcode = models.ForeignKey('Project', models.DO_NOTHING, db_column='projectid')
    taskname = models.CharField(max_length=100)
    taskdescription = models.TextField(max_length=500, blank=True, null=True)

    #add this
    def __str__(self):
        return self.projectname

str（）方法允许我们返回一个漂亮的，人类可读的模型表示以获取更多信息，请参阅str()方法的文档

注意：您必须在任务模型类上面添加此代码，以防您使用Python2：

@python_2_unicode_compatible # only if you need to support Python 2

在Django中显示表单中外键的属性

3 个答案: