Hi, Having the app consult the IDL is indeed the way to go. This ideally should happen on startup, although it would be reasonable to cache the results, potentially for fairly lengthy durations. The 24 hours you suggest should generally be fine, although it could still lead to some friction for patrons the day after an Evergreen upgrade. Triggers for updating the cached IDL values would include:
- a change in Evergreen version number as reported by opensrf.open-ils.system.ils_version - a change in file modification date reported by an HTTP HEAD request on /reports/fm_IDL.xml Parsing /reports/fm_IDL.xml will work, but alternatives to parsing the whole IDL (most of which is presumably irrelevant to the app) is parsing the output of /IDL2js. This can be restricted to only the class of interested, e.g., /IDL2js?acp,au Regards, Galen On Wed, Oct 11, 2023 at 8:55 AM Josh Stompro via Evergreen-dev < [email protected]> wrote: > Hello, I was working with Solus on some breakage of their app after our > upgrade to 3.11. The issue was related to the fields ordering changing in > the results to service=open-ils.auth method=open-ils.auth.session. > retrieve. > > When they initially set it up, they just went by the index number of each > result, but that changed due to actor.usr changes over the years. > > I suggested that they could take a look at /reports/fm_IDL.xml for the > new ordering, and they quickly setup a system to grab that file every 24 > hours and use it to access the fields for api results. I just wanted to > double check to see if that is the recommended way to handle things if they > have customers with different versions of evergreen? Is there a simpler > approach that would be better? > > Thanks > Josh > [image: Company logo] > *Josh Stompro* > IT Director > [email protected] | 218-233-3757 ext. 139 | 218-790-2110 > *Lake Agassiz Regional Library * > 118 5th ST S > Moorhead MN 56560 > www.larl.org > *Our mission is to enrich lives and strengthen communities.* > _______________________________________________ > Evergreen-dev mailing list > [email protected] > http://list.evergreen-ils.org/cgi-bin/mailman/listinfo/evergreen-dev > -- Galen Charlton Implementation and IT Manager Equinox Open Library Initiative [email protected] https://www.equinoxOLI.org phone: 877-OPEN-ILS (673-6457) direct: 770-709-5581 <http://evergreen-ils.org>
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