python - Django: searching in related models

Question

Hello I want to create simple search form which will allow to get data from related models.

I have 3 models:

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()

in my home view I have:

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})

And it works fine, but I would like to search throug emails and phones too (person can have fews email and phone). If in my query I use another OR (|), I got error I cant combine 2 models in one query. I also wanto to try with chain:

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

Unfortunately, this solution doesnt work too. How can I solve this?

EDIT: TEMPLATE

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

标签： pythondjango

Answer 1

you can use Q here:

models:

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()

views:

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