Issue:Mode=category loses letter headings when ordermethod=titlewithoutnamespace

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Description: mode=category should produce headings A, B, C, etc., but does not when ordermethod=titlewithoutnamespace
Extension / Version: DPL   /   1.8.8
Type / Status: Bug   /   open

Problem

MediaWiki 1.15.1.

This produces the headings A, B, C, etc., like a category page:

<dpl>
category = African Union member states
mode = category
ordermethod = title
</dpl>

Example:

C

N

S

This should produce A, B, C, etc., but does not:

<dpl>
category = African Union member states
mode = category
ordermethod = titlewithoutnamespace
</dpl>

Example:

C

N

S

I think the headings are empty or blank, not missing. If you have many items in your list, you will see continuation headings like "cont." instead of "A cont." So I'm guessing the headings are being rendered, but they are blank, so nothing shows up. Here is an example with "cont.":

Patch

In this situation, when ordermethod=titlewithoutnamespace, DPLArticle->mStartChar is not being set. This is happening because in DPLMain.php, formatCategoryList() says:

if( isset($row->sortkey) ) {
 $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($row->sortkey));
} 

but $row->sortkey is not set. I changed it to

if( isset($row->sortkey) ) {
 $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($row->sortkey));
} else {
 $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($row->page_title));
}

and things seem to work. What do you think of this patch? It looks like mStartChar is unused in DPL, except for category mode, so this should be pretty safe...?

Better code:

$startChar = isset($row->sortkey) ? $row->sortkey : $row->page_title;
$dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($startChar));

Any comments on this patch? Maiden taiwan 19:43, 4 February 2010 (UTC)

Notes on the patch

Looks like this bug is gone in DPL 2.0 (prerelease). However, the code in DPLMain.php looks like it was patched incorrectly. Instead of replacing the old code, my patch was placed after the old code, so you now have this:

if( isset($row->sortkey) ) {
  $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($row->sortkey));
}
        if( isset($row->sortkey) ) {
           $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($row->sortkey));
        } else {
            $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($pageTitle));
        }

which redundantly tests isset($row->sortkey twice and sets $dplArticle->mStartChar twice.

(Also note: the extra indenting is misleading: both IF statements are actually at the same indent level.)

The code should be:

if( isset($row->sortkey) ) {
    $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($row->sortkey));
} else {
    $dplArticle->mStartChar = $wgContLang->convert($wgContLang->firstChar($pageTitle));
}

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