Question

型号：

class Exercise (models.Model):
    name_e = models.CharField(max_length=50)

class Subject (models.Model):
    name_s = models.CharField(max_length=50)
    exercise = models.ForeignKey(Exercise)

查看：

exercise_all = Exercise.objects.all()
subject_all = Subject.objects.all()

我的SQL表包含通过ForeignKey连接的主题和练习

我将视图变量作为上下文传递给模板：

{% for e_field in exercise_all %}
<table>
<tr><th>Header</th></tr>
    {% for s_field in subject_all %}
    <tr><td>{{ e_field.name_e }}</td></tr>
    {% endfor %}
</table>
{% endfor %}

如果我有，比方说，3种类型的练习和10个与练习相关的主题（subject1-＆gt; exercise1，subject2-＆gt; exercise1，subject3-＆gt; exercise1，subject4-＆gt; exercise2等）我想在模板中显示3个表，每个表只显示对应于表/练习的tr /主题。我尝试使用{％if ... in ...％}，但也许我应该在视图中执行某些功能。

Answer 1

在这种情况下，您应该能够说：

{% for e_field in exercise_all %}
<table>
<tr><th>Header</th></tr>
    {% for s_field in e_field.subject_set.all %}
    <tr><td>{{ e_field.name_e }}</td></tr>
    {% endfor %}
</table>
{% endfor %}

django在模板中显示模型中的特定数据

1 个答案: