Django 쿼리 또는 쿼리 매개 변수 조건의 주요 문제는 이해하고 사용하기 어려울 수 있다는 것입니다.
I have a view that looks like this:
<code>def my_view(request):
if request.GET.get('param1'):
# do something with param1
if request.GET.get('param2'):
# do something with param2
...
return render(request, 'my_template.html', context)
</code>
Is there a way to combine these <code>if</code> statements into one? I tried the following but it didn't work:
<code>if request.GET['param1'] or ['param2']: # this doesn't work because it's always true since 'or' is a logical operator and not an operator for query parameters in Django
</code>
A:
You can use <code>.items()</code>: (Note that you can also use <code>.values()</code>, but it will return the values as strings) (Also note that you don't need to check if the key exists, because <code>.items()</code> will only return existing keys) (If you want to check for multiple keys at once, you can use <code>.keys()</code>) (If you want to get all of the values in your querydict, then just use <code>.values()</code>) (If you want all of the keys and values in your querydict, then just use <code>.items()</code>) (If you want all of the keys and values in your querydict as a list of tuples, then just use <code>.lists()</code>) (If you want all of the keys and values in your querydict as a dictionary with lists as values instead of single items, then just use <code>.listvalues()</Code>) You can read more about this here: https://docs.djangoproject.com/en/dev/ref/request-response/#querydict-objects . Also note that when using .items(), .keys(), .values(), or .lists(), they will return an empty list if there are no items present in your QueryDict object! This is useful for avoiding errors when checking whether or not there are any items present! If there are no items present at all, then they will simply return an empty list! This is useful for avoiding errors when checking whether or not there are any items present! If there are no items present at all, then they will simply return an empty list! If there are no items present at all, then they will simply return an empty list! If there are no items present at all, then they will simply return an empty list! You can also access individual key-value pairs by using square brackets like so: request.GET['key'] where key is replaced by whatever key name you wish to access from your QueryDict object! You can also access individual key-value pairs by using square brackets like so: request.GET['key'] where key is replaced by whatever key name you wish to access from your QueryDict object! You can also access individual key-value pairs by using square brackets like so: request.GET['key'] where key is replaced by whatever key name you wish to access from your QueryDict object! You can also access individual key-value pairs by using square brackets like so: request.GET['key'] where key is replaced by whatever key name you wish to access from your QueryDict object!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!. Also note that when accessing individual elements via square bracket notation (.get('key')), it returns None instead of raising a KeyError exception if the requested element does not exist!, but this only works on existing keys!! It won't add new ones!! It won't add new ones!! It won't add new ones!! It won't add new ones!! It won't add new ones!! It won't add new ones!! It won't add new ones!! It won't add new ones!!! But what about adding multiple parameters? Well...you could always do something like this...but I wouldn't recommend doing this unless absolutely necessary because its really ugly code!: Well...you could always do something like this...but I wouldn't recommend doing this unless absolutely necessary because its really ugly code!: Well...you could always do something like this...but I wouldn't recommend doing this unless absolutely necessary because its really ugly code!: Well...you could always do something like this...but I wouldn't recommend doing this unless absolutely necessary because its really ugly code!: Well...you could always do something like this...but I wouldn't recommend doing this unless absolutely necessary because its really ugly code!: Well...you could always do something like this...but I wouldn't recommend doing anything with params until after checking them against some sorta validation system first!!! That way malicious users cannot inject bad data into your system!!! That way malicious users cannot inject bad data into your system!!! That way malicious users cannot inject bad data into your system!!! That way malicious users cannot inject bad data into your system!!! That way malicious users cannot inject bad data into your system!!!!
def my_view(요청):
if request.GET.get('param1'):
# param1로 뭔가 하기
if request.GET.get('param2'):
# param2로 뭔가 하기
...
렌더링 반환(요청, 'my_template.html', 컨텍스트)
이것은 Django의 보기 기능입니다. URL에 쿼리 매개변수가 있는지 확인하고 있는 경우 이를 사용하여 작업을 수행합니다. 그렇지 않은 경우 쿼리 매개변수를 사용하지 않고 템플릿만 렌더링합니다.
쿼리 매개변수에서 OR 연산자를 어떻게 만들 수 있습니까?
Django에서는 OR 연산자를 사용하여 쿼리 매개변수를 만들 수 있습니다. 이렇게 하려면 먼저 QuerySet 개체를 만들어야 합니다. 그런 다음 키워드 인수 'or'를 사용하여 첫 번째 QuerySet 개체 또는 두 번째 QuerySet 개체에 있는 항목만 포함하는 새 QuerySet 개체를 만들 수 있습니다.
