使用实际的数据时间和生日以及数据字段在Django模板中定义年龄 [英] Define age in django template using actual datatime and birthday with datafield

问题描述

我是django的初学者，并试图显示我的用户群中每个用户的年龄.

i'm begginer at django and trying to display age for every user in my base of users.

这是我的代码:

models.py:

models.py:

class Cv(models.Model):
    author = models.ForeignKey('auth.User')
    name = models.CharField(max_length=25, null = True)
    surname = models.CharField(max_length=25, null = True)
    address = models.CharField(max_length=100, blank=True)
    telephone = models.IntegerField()
    birth_date = models.DateField(blank=True, null=True)
    email = models.EmailField(max_length=50, null=True)
    skills = models.TextField(null=True)
    specialization = models.CharField(max_length=30, blank=True, null=True)
    interests = models.TextField(blank=True, null=True)
    summary = models.TextField(blank=True, null=True)
    thumbnail = models.FileField(upload_to=get_upload_file_name, blank=True)




    def zapisz(self):
        self.save()

    def __str__(self):
        return self.surname

template.html:

template.html:

{% block base %}
<div class="vvv">
    <h2>Base of users</h2><hr>
    <table id="example" class="display" cellspacing="0" width="100%">
        <thead>
          <tr>
            <th>Nr.</th>
            <th>Full Name</th>
            <th>Specialization</th>     
            <th>Age</th>
            <th>E-mail</th>
          </tr>
         </thead>
         <tbody>
          {% for cv in cvs %}
              <tr>
                <td>{{forloop.counter}}.</td>
                <td><a href="{% url "proj.views.cv_detail" pk=cv.pk %}">{{cv.name}} {{cv.surname}}</a></td>
                <td>{{cv.specialization}}</td>      
                <td>{{ cv.age }} </td>
                <td>{{cv.email}}</td>
              </tr>
          {% endfor %}
          </tbody>
    </table><br>


</div>
{% endblock %}

views.py:

@login_required
def base_cv(request):

    cvs = Cv.objects.filter()

    for cv in cvs:

        def calculate_age(self):
            import datetime
            return int((datetime.datetime.now() - cv.birth_date).days / 365.25  )

        age = property(calculate_age)

    con = {

    'cvs': cvs,
    'age': age,
    }

    return render(request, 'base_cv.html', con)

不知道为什么渲染和显示后的字段为空.

And don't know why the fields after rendering and displaying, are empty.

感谢您的帮助！

推荐答案

calculate_age 应该是模型上的函数.您可以使用此处所述的 @property 装饰器，例如:

calculate_age should be a function on the model. You can use the @property decorator described here like:

from datetime import datetime

class Cv(models.Model):

    ...

    @property
    def age(self):
        return int((datetime.now().date() - self.birth_date).days / 365.25)

那么您的视图就可以是:

Then your view can simply be:

@login_required
def base_cv(request):
    con = {'cvs': Cv.objects.all()}
    return render(request, 'base_cv.html', con)

与 filter 全部>当您需要所有模型时.

all is preferred over filter when you want all of the models.

这篇关于使用实际的数据时间和生日以及数据字段在Django模板中定义年龄的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！