using pipe delimited string in URL in django

Question

I am trying to pass a pipe delimited string as a parameter in my url in django, but it fails to route to the respective view.

This is my pipe delimited string:

"main/1|adel|1|1989-09-19|1|1|test alert|2018-03-16-09-26-00|test module|1|1|test encounter"

and this is my url pattern:

from django.conf.urls import url
from django.views.generic import RedirectView
from alerter import views

app_name = 'alerter'

urlpatterns = [

    url(r'^main/(?P<message>[a-zA-Z0-9_]+)/$',
    views.TheView.as_view({'get': 'view'}), name = 'main'),



]

your regex trying to look for words while you are passing words and special characters... — JPG
– JPG, Commented Mar 17, 2018 at 15:29
one of the possible solution is replace \w+ with \S+ . or pass the message as url parameter — JPG
– JPG, Commented Mar 17, 2018 at 15:32
I believe \S+ will capture / in the URL, but yes, the solution is to use an appropriate regex. — Chris
– Chris, Commented Mar 17, 2018 at 15:35

Community · Accepted Answer · 2020-06-20 09:12:55Z

1

\w doesn't match |:

For Unicode (str) patterns:

Matches Unicode word characters; this includes most characters that can be part of a word in any language, as well as numbers and the underscore. If the ASCII flag is used, only [a-zA-Z0-9_] is matched (but the flag affects the entire regular expression, so in such cases using an explicit [a-zA-Z0-9_] may be a better choice).

Adjust your pattern, e.g. by capturing [a-zA-Z0-9_|]:

url(r'^main/(?P<message>[a-zA-Z0-9_|]+)/$',
    views.TheView.as_view({'get': 'view'}), name='main')

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Mar 17, 2018 at 15:32

Chris

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5 Comments

DisplayName Over a year ago

although i'm convinced it should work, it didn't, the url works if i used non delimited string but even if i used a hyphen as delimiter, it fails.

Chris Over a year ago

I frequently use hyphens in URLs. Maybe another rule is matching your URLs. What does "it fails" mean? Do you get a 404, or does a different view load? Please edit your question and add your whole urls.py file.

DisplayName Over a year ago

i get a 404, will add my full file now

Chris Over a year ago

@adelelsayed, you don't appear to have included | (or -, for that matter) in your regular expression. Take a close look at mine: I added | after _. (The hyphens in this expression are used to indicate ranges, not as literal hyphens.)

DisplayName Over a year ago

i just forgot to write it here in stakoverflow, i included "- and space" to my regex, it turned out that i forgot about them. url(r'^main/(?P<message>[ a-zA-Z0-9_|-]+)/$', views.TheView.as_view({'get': 'view'}), name = 'main')

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