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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 |
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90 | * |
91 | * @since 4.7.0 |
92 | * |
93 | * @param mixed $result Value to use for the requested setting. Can be a scalar |
94 | * matching the registered schema for the setting, or null to |
95 | * follow the default get_option() behavior. |
96 | * @param string $name Setting name (as shown in REST API responses). |
97 | * @param array $args Arguments passed to register_setting() for this setting. |
98 | */ |
99 | $response[ $name ] = apply_filters( 'rest_pre_get_setting', null, $name, $args ); |
100 |
|
101 | if ( is_null( $response[ $name ] ) ) { |
102 | // Default to a null value as "null" in the response means "not set". |
103 | $response[ $name ] = get_option( $args['option_name'], $args['schema']['default'] ); |
104 | } |
105 |
|
106 | /* |
107 | * Because get_option() is lossy, we have to |
108 | * cast values to the type they are registered with. |