Pagination: Last Page

rubyonrails-talk
1

Hi Folks

is there any way to link to the last page of a paginated list, if the number of pages is not available in this moment? For example a forum with topic and replies. I'd like to link to the last page of the replies, but I don't know how many pages there are in the forum view? I'm using mislav-will_paginate for pagination.

Thank you in advance!

2

i had the same problem. some people already asked this feature to be added to will_paginate, apparently the developer doesn't think it is a good idea. check this:

http://groups.google.com/group/will_paginate/browse_thread/thread/9c4ff183a4271bde/3f71f7dc31a54767

for my projects i made an extension to make will_paginate accept :page => :last.

Patrick Heneise wrote:

3

PP Junty wrote:

i had the same problem. some people already asked this feature to be added to will_paginate, apparently the developer doesn't think it is a good idea. check this:

http://groups.google.com/group/will_paginate/browse_thread/thread/9c4ff183a4271bde/3f71f7dc31a54767

for my projects i made an extension to make will_paginate accept :page => :last.

Thanks for this hint. Too bad Mislav doesn't accept this point. Do you have a link for your extension?

Thank you!

4

ok, i made a little plugin with this functionality, it is attached. definitely not a pro solution but may be useful. could you test it and see if it is working? if it is i could publish it on github. this plugin also alter another behavior that i find annoying, which is: when you request a page greater than the total pages will_paginate returns an empty page. that happens specially when the last item of a page is deleted. the extension will always return the last page in this case.

Patrick Heneise wrote:

Thanks for this hint. Too bad Mislav doesn't accept this point. Do you have a link for your extension?

Thank you!

Attachments: http://www.ruby-forum.com/attachment/3796/will_paginate_last.zip

5

just a correction. by "that happens specially when the last item of a page is deleted." i meant "that happens specially when the last page has only one item and the item is deleted."

6

you should use blank? instead of nil? because even the original will_paginate will throw an error if you pass an empty string. and you should not rely on what you receive in the param :page as a user could manually alter the url to some strange value. what i do is to have a parse method that ensure that will_paginate is getting a valid page number, that is why i didn't bother throwing a more informative error message, i'll see if it can be improved.