Django查询为复选框表单中的字符串数组

Question

我想从一个复选框中获得多个输入，然后从我的数据库中筛选出来。这将类似于：

http://127.0.0.1:8000/data/?class_type=[class_C,class_M]

然而，我从查询中收到的是：

http://127.0.0.1:8000/data/?class_type=class_C&class_type=class_M

这就是它的编码方式，在.html:中

Data class <br> 
<div class="form-check">
<input class="form-check-input" type="checkbox" value="class_C" id="class_C" name="class_type">
<label class="form-check-label" for="class_C">
C
</label>
</div>
<div class="form-check">
<input class="form-check-input" type="checkbox" value="class_M" id="class_M" name="class_type">
<label class="form-check-label" for="class_M">
M
</label>
</div>
<div class="form-check">
<input class="form-check-input" type="checkbox" value="class_X" id="class_X" name="class_type">
<label class="form-check-label" for="class_X">
X
</label>
</div> 

在视图中。py：

data_class = request.GET.get('class_type')
[...]
if data_class == "class_C":
database = database.filter(class_l__contains = "C")
elif data_class == "class_M":
database = database.filter(class_l__contains = "M")
elif data_class == "class_X":
database = database.filter(class_l__contains = "X")

非常感谢您的帮助！非常感谢。

Answer 1

您可以使用.getlist(…)[Django-doc]:获取列表

from django.db.models importQ
data_classes = request.GET.getlist('class_type')
acceptable_values = {'class_C', 'class_M', 'class_X'}
if all(data_class in acceptable_values for data_class in data_classes):
query = Q(*[Q(('class_l_contains', value)) for value in data_classes])
database = database.filter(query)

或者对于逻辑or：

from django.db.models import Q
data_classes = request.GET.getlist('class_type')
acceptable_values = {'class_C', 'class_M', 'class_X'}
if all(data_class in acceptable_values for data_class in data_classes):
query = Q(
*[Q(('class_l_contains', value)) for value in data_classes],
_connector=Q.OR
)
database = database.filter(query)