Addons-frontend: Page not found (404) error when too many spaces are typed in the collection slug

[ioanarusiczki]

STR:

1. Load AMO dev and go to a collection to Edit this collection.
2. In the collection slug type in many spaces before the name of the collection.
3. Click on Save Collection.

Expected result:
Red message " The custom URL must consist of letters, numbers, underscores or hyphens" should be displayed.

Actual result:
404 Page not found.

Notes:
This issue is reproducible with FF59(Win10) on AMO dev.

[tsl143]

@tofumatt, I am not sure but can trimming the blank spaces before submit help? ideally we should trim spaces before submitting form.

[tsl143]

Okay trimming will resolve the issue, as backend API has trimming and check for max 30 characters.

i will give a patch soon.

[bobsilverberg]

Thanks for the suggestion and the offer to fix it @tsl143!

[tsl143]

Done :)

[ioanarusiczki]

Verified fixed on AMO dev with FF59(win10).