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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
839 | } else if ( 'db' == $context ) { |
840 | $value = apply_filters("pre_term_$field", $value, $taxonomy); |
841 | $value = apply_filters("pre_${taxonomy}_$field", $value); |
842 | // Back compat filters |
843 | if ( 'slug' == $field ) |
844 | $value = apply_filters('pre_category_nicename', $value); |
845 |
|
846 | } else if ( 'rss' == $context ) { |
847 | $value = apply_filters("term_${field}_rss", $value, $taxonomy); |
848 | $value = apply_filters("${taxonomy}_${field}_rss", $value); |
849 | } else { |
850 | // Use display filters by default. |
851 | $value = apply_filters("term_$field", $value, $term_id, $taxonomy, $context); |
852 | $value = apply_filters("${taxonomy}_$field", $value, $term_id, $context); |
853 | } |
854 |
|
855 | if ( 'attribute' == $context ) |
856 | $value = attribute_escape($value); |
857 | else if ( 'js' == $context ) |