Python 加载不带搜索查询的URL
DJANGO/PYTHON 我正在试着加载。如果用户在此页面上的中输入数据,则表单将向数据库发送搜索查询。我的问题是没有加载–它会导致异常值为“search\u query”的“MultiValueDictKeyError”异常类型。但是,当用户将数据提交到表单中时,(即)页面将加载。我正试图使其在用户无需提交搜索查询的情况下加载 以下是我的查看功能:Python 加载不带搜索查询的URL,python,django,http,search,get,Python,Django,Http,Search,Get,DJANGO/PYTHON 我正在试着加载。如果用户在此页面上的中输入数据,则表单将向数据库发送搜索查询。我的问题是没有加载–它会导致异常值为“search\u query”的“MultiValueDictKeyError”异常类型。但是,当用户将数据提交到表单中时,(即)页面将加载。我正试图使其在用户无需提交搜索查询的情况下加载 以下是我的查看功能: def index(request): . . . num_of_word = [] bookInstance_tit
def index(request):
. . .
num_of_word = []
bookInstance_titles = []
bookInstance_ids = []
num_of_word = BookInstance.objects.filter(status='a', book__title__contains=request.GET['search_query']).count()
bookInstances = BookInstance.objects.filter(status='a', book__title__contains=request.GET['search_query'])
for i in bookInstances:
bookInstance_titles.append(str(i.book))
bookInstance_ids.append(str(i.id))
context = {
. . .
'num_of_word': num_of_word,
'bookInstance_titles': bookInstance_titles,
'bookInstance_ids': bookInstance_ids,
}
我认为问题在于变量(num_of_word和bookInstances)试图访问请求的搜索查询,而/catalog/request没有搜索查询。经过研究,我仍然不知道如何解决这个问题
谢谢大家! 您尝试在GET查询不存在时访问它。您必须检查request.GET中是否存在搜索查询,或者仅对其使用.GET函数。见下文:
def index(request):
. . .
num_of_word = []
bookInstance_titles = []
bookInstance_ids = []
num_of_word = BookInstance.objects.filter(status='a', book__title__contains=request.GET.get('search_query', '').count()
bookInstances = BookInstance.objects.filter(status='a', book__title__contains=request.GET.get('search_query', ''))
for i in bookInstances:
bookInstance_titles.append(str(i.book))
bookInstance_ids.append(str(i.id))
context = {
. . .
'num_of_word': num_of_word,
'bookInstance_titles': bookInstance_titles,
'bookInstance_ids': bookInstance_ids,
}
希望它能起作用。根据您的代码使用以下选项
if request.method == 'GET' and 'q' in request.GET: #q is search Input field reference
num_of_word = []
bookInstance_titles = []
bookInstance_ids = []
num_of_word = BookInstance.objects.filter(status='a', book__title__contains=request.GET.get('search_query', '').count()
bookInstances = BookInstance.objects.filter(status='a', book__title__contains=request.GET.get('search_query', ''))
for i in bookInstances:
bookInstance_titles.append(str(i.book))
bookInstance_ids.append(str(i.id))
context = {
. . .
'num_of_word': num_of_word,
'bookInstance_titles': bookInstance_titles,
'bookInstance_ids': bookInstance_ids,
}
else{
context = {
. . .
'num_of_word': "", #What you want to pass
'bookInstance_titles': "", #What you want to pass
'bookInstance_ids': "", #What you want to pass
}
}