Question

您好，我想创建一个简单的搜索表单，该表单将允许从相关模型中获取数据。

我有3种型号：

class Person(models.Model):
    name = models.CharField()
    surname = models.CharField()

class Phone(models.Model):
    person = models.ForeignKey(Person,on_delete=models.CASCADE,related_name="phones")
    phone = models.CharField(0

class Email(models.Model):
    person = models.ForeignKey(Person,on_delete=models.CASCADE, related_name="emails")
    email = models.EmailField()

在主视图中，我有：

def home(request):
    people = Person.objects.all()
    query = request.GET.get("q")
    if query:
        people = Person.objects.filter(Q(name__icontains=query)|Q(surname__icontains=query)|
                 Q(emails__contains=query)|Q(phones__icontains=query))
    //when I try emails_email__icontains=query I get error about no such fields

    return render(request,'app/home.html',{'users': people})

它工作正常，但我也想搜索电子邮件和电话（人可能很少有电子邮件和电话）。如果在查询中使用另一个OR（|），则出现错误，我无法在一个查询中合并2个模型。我也想尝试使用链条：

people= above query
emails = Email.objects.filter(email__icontains=query)
context = chain(people,emails)

不幸的是，该解决方案也不起作用。我该怎么解决？

编辑：模板

{% block content %}
   {%for user in users %}
      {{user.id }} {{user.name}} {{user.surname}}
      {% for email in user.email_set.all %}
         {{email}}
      {% endfor %}
    {% endfor %}

Answer 1

尝试

在models.py

中

class Person(models.Model):
    name = models.CharField()
    surname = models.CharField()

class Phone(models.Model):
    person = models.ForeignKey(Person,on_delete=models.CASCADE, related_name='a')
    phone = models.CharField(0

class Email(models.Model):
    person = models.ForeignKey(Person,on_delete=models.CASCADE, related_name='b')
    email = models.EmailField()

在过滤器中

from django.db.models import Q

people = Person.objects.filter(Q(name__icontains=query)|Q(surname__icontains=query)|Q(b__email__icontains=query))

在模板中

{% block content %}
{% for user in users %}
    {{user.id }} {{user.name}} {{user.surname}}
    {% for email in user.b.all %}
       {{email.email}}
    {% endfor %}
{% endfor %}

希望有帮助

Answer 2

您可以使用Q here：

型号：

class Phone(models.Model):
    person = models.ForeignKey(Person,on_delete=models.CASCADE, related_name="phones")
    phone = models.CharField(0

class Email(models.Model):
    person = models.ForeignKey(Person,on_delete=models.CASCADE, related_name="emails")
    email = models.EmailField()

观看次数：

from django.db.models import Q

def home(request):
    people= Person.objects.all()
    query - request.GET.get("q")
    if query:
        people = Person.objects.filter(Q(name__icontains=query) | Q(surname__icontains=query) | Q(emails__email__icontains=query) | Q(phones__phone__icontains=query))

    return render(request,'app/home.html',{'users': people})

use chain

Answer 3

据我所知，基本上，您需要一群人将搜索查询作为电子邮件或电话。

    Person.objects.filter(Q(mobile__icontains=query)|Q(email__icontains=query))

上面的查询将返回Person对象的列表作为结果。这基本上是一种反向查找，它将搜索所有以Person为外键并具有字段（即手机和电子邮件）的模型。

Django：在相关模型中搜索

3 个答案: