我創建了一個表單，每次提交時都會html回傳資料。Django但是，當提交后重新加載頁面時，表單中輸入的資料會丟失。為了解決這個問題，我從檔案和這個博客中獲得靈感，然后我修改了我的views.py檔案：
def search(request):
if request.method == 'POST':
search = request.POST['search']
form = MyForm(request.POST)
max_pages_to_scrap = 15
final_result = []
for page_num in range(1, max_pages_to_scrap 1):
url = "https://www.ask.com/web?q=" search "&qo=pagination&page=" str(page_num)
res = requests.get(url)
soup = bs(res.text, 'lxml')
result_listings = soup.find_all('div', {'class': 'PartialSearchResults-item'})
for result in result_listings:
result_title = result.find(class_='PartialSearchResults-item-title').text
result_url = result.find('a').get('href')
result_desc = result.find(class_='PartialSearchResults-item-abstract').text
final_result.append((result_title, result_url, result_desc))
context = {'final_result': final_result}
form = MyForm()
return render(request, 'index.html', context,{'form':form})
我在我的models.py檔案中寫了以下代碼：
from django import forms
from django.db import models
# Create your models here.
class MyForm(forms.Form):
search = forms.CharField(max_length=500)
這是我的index.html檔案的內容：
<form method="POST" action="search">
{% csrf_token %}
<input type="search" name="search" placeholder="Search here..." value="{{form.search.value}}" autofocus x-webkit-speech/>
</form>
盡管我進行了修改，但表單資料在提交后并未保留。
uj5u.com熱心網友回復：
它無法保存，因為您正在將全新的表單傳遞給背景關系：
...
form = MyForm()
return render(request, 'index.html', context,{'form':form})
只需移動form = MyForm()到類似的東西elif request.method == 'GET':：
if request.method == 'POST':
...
form = MyForm(request.POST)
...
for page_num in range(1, max_pages_to_scrap 1):
...
elif request.method == 'GET':
form = MyForm()
context = {'final_result': final_result, 'form': form}
return render(request, 'index.html', context)
PS保持form你的背景關系，它更清晰。
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