Topic on Extension talk:VisualEditor

Tracked in Phabricator
Task T201628

I have VisualEditor generally working correctly on my site. However, when I attempt to edit a subpage VisualEditor presents me with a blank page instead of the contents of the page. Looking at the Parsoid log I can see no evidence of any calls to Parsoid relating to the subpage so it appears that it fails to get that far. Looking at my Apache log I can see:

"GET /api/rest_v1/page/html/Page%2FSubpage?redirect=false HTTP/1.1" 404 602 "https://www.mysite.org/wiki/Page/Subpage?action=edit" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/17.17134"

All other items relating to this page return success and editing the page (rather than the subpage) returns a similar result but with a success code so I'm guessing this is the problem. Any idea why I'm getting a 404 error here and how I fix it?

Thanks in advance for any assistance.

A bit more information...

Having tried the request to /api/rest_v1/page/html/... from a browser, I find the response is as follows:

Page - the contents of the page as expected

Page/Subpage - the response "{"type":"https://mediawiki.org/wiki/HyperSwitch/errors/bad_request","title":"Invalid parameters","method":"get","detail":"data.params.revision should be an integer","uri":"/www.mysite.org/v1/page/html/Page/Subpage"}"

Page%2FSubpage - "The requested URL /api/rest_v1/page/html/Page/Subpage was not found on this server."

I'm running MediaWiki 1.31, the VisualEditor version tagged for 1.31, Parsoid 0.9.0all and Restbase 0.18.1. My Apache config includes the directive "ProxyPass /api/rest_v1/ http://localhost:7231/www.mysite.org/v1/"

I am unclear why Page/Subpage and Page%2FSubpage produce different results but neither response is correct.

There have been some problems with subpages in the past (e.g., https://phabricator.wikimedia.org/T110413 ) but I can't find any bugs that sound like what you're experiencing.

I've investigated a bit further.

If I use curl to go straight to localhost:7231 I get the following:

Page - the contents of the page as expected

Page/Subpage - the response "{"type":"https://mediawiki.org/wiki/HyperSwitch/errors/bad_request","title":"Invalid parameters","method":"get","detail":"data.params.revision should be an integer","uri":"/www.mysite.org/v1/page/html/Page/Subpage"}"

Page%2FSubpage - the contents of the subpage

This seems to mean that the Page%2FSubpage case is not being handed off correctly to Restbase by Apache. Having checked, it seems VE is using the Page%2FSubpage version. So my guess is that there is a URL-encoding issue here. Any thoughts?

My thought is that I love all the details you've posted, and that it's time to file a bug report. It's up at phab:T201628. You can login (look for the button to login using your MediaWiki.org account) and edit the bug report or add extra information there.

This does sound like an Apache rewrite rule problem. @Prh47bridge could you please subscribe to the ticket above and include your apache config there?

I've been on holiday for a couple of weeks. My apache config has now been added to the bug report.

Hi, I'm getting similar problems as this user. I was looking if there was an update to this problem?