How to pass multi optional URL parameters?
For example I want pass 2 params: my_color
and my_year
, but they are optional, so may be none of them will be passed, may be both, or may be only one.
Currently in urls.py
I have :
urlpatterns = [
re_path(r'^products/(?P<my_color>.*)/(?P<my_year>.*)$', some_view),
]
This obviously is not correct and works only if both of them are passed.
What would be correct solution?
PS I found answers when only one optional parameter needs to be pass, but not figured out how to do same for few parameters. Also it seems "multiple-routes option" is not solution in this case (?)
If myyear
is a sequence of digits , and mycolor
is a equence of non-digits , you can use
urlpatterns = [
re_path(r'^products/((?P<my_color>)/)?(?P<my_year>)$', some_view),
]
this will pass an empty string for the corresponding elements if the my_color
or my_year
are not present. You thus can write a view that looks like:
def some_view(request, my_color, my_year):
if my_color:
# …
if my_year:
# …
If both have the same sequence of characters, this is not possible , since how would you interpret products/bla
? Is bla
the color, or the year?
That being said, I think you make it too complicated. You can define four patterns, for example:
urlpatterns = [
path(r'^products/', some_view),
path(r'^products/<year>/'),
path(r'^products/<color>/'),
path(r'^products/<color>/<year>/', some_view),
]
Here you thus define four views for the same view. The view can then define optional parameter:
def some_view(request, color, year):
# …
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