[Bb-trac] [bbPress] #943: add ability to filter topic_time()'s output as well as its input time

[bbPress]

#943: add ability to filter topic_time()'s output as well as its input time
-------------------------+--------------------------------------------------
 Reporter:  fel64        |       Owner:                  
     Type:  enhancement  |      Status:  new             
 Priority:  normal       |   Milestone:                  
Component:  Back-end     |     Version:  1.0-beta (trunk)
 Severity:  normal       |    Keywords:                  
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 The code for `topic_time()`, used in topic listings, is here:
 {{{
 function topic_time( $args = '' ) {
         $args = _bb_parse_time_function_args( $args );
         $time = apply_filters( 'topic_time', get_topic_time(
 array('format' => 'mysql') + $args), $args );
         echo _bb_time_function_return( $time, $args );
 }
 }}}

 You can see that the filter `topic_time` filters the actual time, which is
 then passed to `_bb_time_function_return()`, which does a little
 processing and then passes it to `bb_gmdate_i18n()` which then returns
 something. A filter is not applied again (as far as I can tell - the time
 functions are not very easy to read).

 If someone wishes to change how the time is displayed, they have to change
 the functions in their template files. In my opinion this would be better
 done with a plugin; it increases theme maintanability (since less theme
 files have to be changed, thus more of them can come from the up-to-date
 kakumei).

 A plugin could be used or, equally, the change could be made using plugin-
 like code in the theme's functions.php. It may be a design decision, but I
 think it's best implemented using code, and for that bbPress needs to
 filter topic_time()'s output. The filter should also pass the time as an
 argument.

 Additional filter names could be `echo_topic_time` and, for
 `get_topic_time()`, `return_topic_time`.

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Ticket URL: <http://trac.bbpress.org/ticket/943>
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