Opened 7 years ago

Closed 7 years ago

#28843 closed Uncategorized (invalid)

Pagination: previous_page_number shouldn't raise exception when page=1

Reported by: Scot Hacker Owned by: nobody
Component: Uncategorized Version: 2.0
Severity: Normal Keywords: pagination
Cc: Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description

According to Django 2.0 docs:
​https://docs.djangoproject.com/en/2.0/topics/pagination/

It should be possible to use:

<a href="?page={{ contacts.previous_page_number }}">previous</a>

But if you're looking at /contacts/?page=1 , or /contacts, then previous_page_number() resolves to 0, which throws an exception. It's not even possible to use 

{% if contacts.previous_page_number %}

as it raises the same error. It seems that this method causes a site crash when on page 1, no matter what.

Propose: previous_page_number should return 0 if it can't go any further back rather than raise an exception.

Related to:
https://code.djangoproject.com/ticket/17159

Change History (3)

comment:1 by Scot Hacker, 7 years ago

Summary: previous_page_number shouldn't raise exception when page=1 → Pagination: previous_page_number shouldn't raise exception when page=1

comment:2 by Scot Hacker, 7 years ago

Apologies. I realize now that I wasn't wrapping the call in if page.has_previous. Stupid mistake, sorry,

comment:3 by Tim Graham, 7 years ago

Resolution: → invalid
Status: new → closed
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