[wp-hackers] repeating fields in usermeta?

Silverstein, Jesse Jesse.Silverstein at xerox.com
Thu Apr 16 16:34:09 GMT 2009

I haven't looked at your code, or in depth at the post_meta functions,
so correct me if I'm wrong here, but if you're using built in functions
to accept and return arrays of data, isn't it still going to store the
arrays as serialized strings? If so, how does this solve the initial
problem of having to load all of the data into actual arrays before you
can search it?


-----Original Message-----
From: wp-hackers-bounces at lists.automattic.com
[mailto:wp-hackers-bounces at lists.automattic.com] On Behalf Of SoJ Web
Sent: Thursday, April 16, 2009 12:28 PM
To: wp-hackers at lists.automattic.com
Subject: Re: [wp-hackers] repeating fields in usermeta?

This could end up being useful for me, too, so I submitted a patch to  
an open ticket on the subject:

The get_usermeta function could return an array of multiple values,  
but there didn't seem to be a way to set multiple values. I added a  
add_usermeta function (basically a copy of add_post_meta), and  
modified update_usermeta to allow for modification of value with same  
keys (in a way similar to update_post_meta). Behavior shouldn't change  
for current code. It seemed to work okay for me and what I'm doing,  
but I might not be considering all cases.


On Apr 16, 2009, at 9:23 AM, Casey Bisson wrote:

> Storing email addresses in a serialized array would make searching  
> for a user by email address difficult.
> My choices so far appear to be:
> Create a separate table for email addys.
> Create my own functions to enter and read email addys in usermeta.
> Patch the existing functions to support this use case while  
> maintaining backwards compatibility.
> On Apr 16, 2009, at 8:56 AM, SoJ Web wrote:
>> Would it not be possible to store the e-mail addresses and phone  
>> numbers as serialized arrays under one meta key?
>>> An application I'm working on needs to store an arbitrary number  
>>> of email addresses and phone numbers per user. The wp_users table  
>>> obviously isn't the place, but the wp_usermeta table might not be  
>>> either. The get_ and update_usermeta functions aren't built for  
>>> it, anyway.
>>> The various postmeta functions are very smart about handling  
>>> multiple entries of the same meta_key per post, but not the  
>>> usermeta functions. Is that by design?
>>> --Casey
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