Django中无法通过id=pk获取并展示数据库数据问题求助

我尝试从数据库中获取数据并在view_data.html页面展示，但始终无法成功，目前我对id=pk的使用场景不太理解。我希望点击“host”下方的view按钮时，能展示对应主机的数据。以下是我目前编写的代码：

models.py #

from django.db import models
from django.contrib.auth.models import User


class Information(models.Model):
    host = models.CharField(max_length=200, null=True, blank=False)
    hostname = models.CharField(max_length=200, null=True, blank=False)
    port = models.IntegerField()
    platform = models.CharField(max_length=200, null=True, blank=False)
    username = models.CharField(max_length=200, null=True, blank=False)
    password = models.CharField(max_length=200, null=True, blank=False)
    groups = models.CharField(max_length=200, null=True, blank=False)

    def __str__(self):
        return self.host

views.py #

from django.shortcuts import render, redirect
from django.http import HttpResponse
from .models import Information
from .forms import MyForm


def home(request):
  informations = Information.objects.all()
  context = {'informations':informations}

  return render(request, 'polls/home.html', context)


def view_data(request, pk):
  information = Information.objects.get(id=pk)
  context = {'information':information}

  return render(request, 'polls/view_data.html')


def my_form(request):
  if request.method == "POST":
    form = MyForm(request.POST)
    if form.is_valid():
      form.save()
      return redirect('home')
  else:
      form = MyForm()
  return render(request, 'polls/room_form.html', {'form': form})

forms.py #

from django import forms
from .models import Information

class MyForm(forms.ModelForm):
  class Meta:
    model = Information
    fields = '__all__'

urls.py #

from django.urls import path

from . import views

urlpatterns = [
    path('', views.home, name='home'),
    path('view_data/<str:pk>/', views.view_data, name = "view_data"),
    path('host/', views.my_form, name='my_form')
]

home.html #

{% extends 'main.html' %}

{% block content %}

<h1>Home Template</h1>

<div>
    <a href="{% url 'my_form' %}"> Add Device </a>
    <hr>

    <div>
        {% for information in informations %}
            <span>@{{information.host}}</span>
            <h3>{{information.id}}<a href="{% url 'view_data' information.id %}"> view </a></h3>
            <hr>
        {% endfor %}
    </div>
</div>

{% endblock content %}

view_data.html #

{% extends 'main.html' %}

{% block content %}

<h1>{{information.hostname}}</h1>

{% endblock content %}

补充：我忘记在view_data视图中传递context了，现在问题已经解决。

内容的提问来源于stack exchange，提问作者Super MaxLv4