Django搜索功能

Question

如何在django中提供搜索栏？我的代码如下。。。

home.html

<form method='GET' action="">
<input type="text" name="search" placeholder="Search posts"/>
<input type="submit"  value="Search"/>
</form>

views.py

def home(request):
posts = Post.objects.all()
search_term = ''
if 'search' in request.GET:
search_term = request.GET['search']
posts = posts.filter(text__icontains=search_term)
context = {
'posts': posts,
'search-term': search_term
}
return render(request, 'feed/home.html', context)

Answer 1

您可能需要一个基于函数的视图。这可能是一个重复或半相关的问题。

from django.shortcuts import render
from django.db.models import Q
from .models import Posts #or whatever your model is
def search(request):
query = request.GET.get('q','')
#The empty string handles an empty "request"
if query:
queryset = (Q(text__icontains=query))
#I assume "text" is a field in your model
#i.e., text = model.TextField()
#Use | if searching multiple fields, i.e., 
#queryset = (Q(text__icontains=query))|(Q(other__icontains=query))
results = Posts.objects.filter(queryset).distinct()
else:
results = []
return render(request, 'home.html', {'results':results, 'query':query})
#You can also set context = {'results':results, 'query':query} after 
#the else: (same indentation as return statement), and 
#use render(request, 'home.html', context) if you prefer. 

您应该能够根据需要提出自己的错误处理或重定向。你的urls.py可能必须是这样的：

from django.urls import path
from . import views
urlpatterns = [
path('feed/', views.search, name='home'),
#'feed/' being the name of desired url, 'views.search' the 
#name of your func-based view, and "name='home'" the template
#you're using.
]

你的搜索栏可能需要看起来像：

<form method='GET' action=".">
#I believe lowercase get also works
<input type="text" name="q" placeholder="Search posts"/>
<input type="submit"  value="{{ query|escape }}"/>
</form>

编辑：我忘了你想访问结果并在模板中显示它们(你现在可以把它放在表单下(。类似于：

{% if query %}
{% if results %}
<ul>
{% for item in results %}
<li>{{ item|escape }}</li>
{% endfor %}
</ul>
{% else %}
<p>Query returned no results.</p>
#SO is formatting "Query" in HTML for some reason. Nonetheless...
{% endif %}
{% endif %}