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If I have several omeka fields of the same kind for an certain item (say multiple creators, or multiple languages), the plugin takes only one of them.

With the COinS plugin 2.0.2 installed on Omeka 2.1.3, only the first of thirteen items will display, both on the site and in the admin view. The error is:

Fatal error: Call to undefined function lcfirst() in /home1/njdigita/public_html/birthcontrolinternational/plugins/Coins/views/helpers/Coins.php on line 57

Disabling the plugin fixes everything.

Coins assigns the current absolute_url to the rft.identifier key. This is the key used by Dublin Core Identifier data.

The Coins spec says the URL for the item being described should go in the rft_id key, not rft.identifier. A glance at Zotero's parsing code suggests it looks for URLs in both those places, so moving our automatic url inclusion to rft_id would let us keep the automatic import of the URL, and let users specify an identifier as well (possibly overriding our automatic one) by setting a DC Identifier that's a URL.

Finally, the "automatic" URL isn't one that points to the item, as it should, it's simply the URL for whatever is the current page. On a browse page, this means all items just show the browse page as their "link."

See the thread on the forums: http://omeka.org/forums/topic/admin-items-page-blank-after-update

Coins lets you pass it arrays of items to work with, but doesn't release_object. Additionally, it used to use the "each" hooks, avoiding unnecessary additional calls to the database to get element text data.

The solution is a combination of:

• going back to using the "each" hooks, and
• adding the release_object to protect any potential callers of the coins view helper.