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I am filtering the map_meta_cap() function, which is called from $user->has_cap (which is called from current_user_can()). I only want my filter to execute if the current user is an administrator, so I need a conditional in my filter that checks their role.

I can't use current_user_can(), because that invokes my filter, causing an infinite loop.

Is there a reliable way to check whether someone is an administrator without using current_user_can() ?

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Might want to look at the $current_user global, remembering to add global scope when inside a function.. –  t31os Jan 26 '11 at 20:28
    
thanks. i have seen a few ways i could check the user role from that object, but wasn't sure how reliable they were... might use in_array('administrator', $current_user->roles) ? –  jessica Jan 26 '11 at 20:33
    
As long as you perform that logic late enough(ie. on/after init) it should be fine.. :) –  t31os Jan 26 '11 at 22:14
    
thanks. feel free to enter your reply as an answer so i can accept it :) –  jessica Jan 26 '11 at 22:37
    
Have done, though i've re-examined my previous thoughts, see answer... :) –  t31os Jan 27 '11 at 0:53

1 Answer 1

up vote 5 down vote accepted

You could check the $current_user variable to determine the role.

I believe it should be realiable after init(maybe even on init) for a logged in user, a guest visitor obviously won't have any data associated with him or her yet(so it'll be empty/unset).

You can also call up get_currentuserinfo() to populate the $current_user var, but i've personally never found a need when calling $current_user after init(but i'm sure there may be cases when you need to call it, so it's linked below for reference).

http://codex.wordpress.org/Function_Reference/get_currentuserinfo

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sweet, i will check if $current_user->roles is empty, and if so, use get_currentuserinfo(). Thanks again! –  jessica Jan 27 '11 at 19:57

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