Django：搜索引擎

Question

我正在尝试在 Django 中创建各种搜索引擎，用户通过表单输入查询并在数据库中存在查询时获取输出。这是我的代码：

urls.py:

from django.conf.urls import url
from django.contrib import admin

from Search import views

urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^', views.form),
url(r'^search/', views.data,name='search'),

]

models.py：

from __future__ import unicode_literals

from abc import ABCMeta

from django.db import models


# Create your models here.


class Album(models.Model):
    artist = models.CharField(max_length=100)
    album_title = models.CharField(max_length=100)
    genre = models.CharField(max_length=100)
    album_logo = models.CharField(max_length=100)

    def __str__(self):
        return self.album_title + "-" + self.artist

views.py：

from django.http import HttpResponse,Http404
from models import Album
from forms import FormQuery
from django.shortcuts import render
from django.template import loader
from . import *

def data(request):
   if request.method=='POST':
        form=FormQuery(request.POST)
        data=form.cleaned_data
        value=data['query']
        if form.is_valid():
            try:
                album1 = Album.objects.get(artist__contains=value)

                return render(request,'Search/form.html',{'album':album1})
            except:
                raise Http404("Does not exist.")
    else:
        return render(request,'Search/form.html')

forms.py：

from django import forms

class FormQuery(forms.Form):
    query=forms.CharField()

form.html:

<form action="{% url 'search' %}" method="POST">{% csrf_token %}

  <fieldset>

    Enter an album:<br>
    <input type="text" name="query" ><br>

    <input type="submit" value="Submit for Search >>">
  </fieldset>

</form>
    {% if album %}
        <h1>{{ album }}</h1>
    {% endif %}

但是，当我键入查询时，我看到 url 发生了变化，但页面保持不变并且我的结果（专辑名称）没有显示。我是 Django 新手。

Answer 1

在访问cleaned_data之前必须调用form.is_valid()。