How can I retrieve the values passed to the shortcode using only one parameter?
Example:
[related type="2,3,4,5,6"]
Is it possible to do that?
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2 Answers
The solution below will parse the comma separated values passed to the shortcode's type parameter. We'll also strip out any whitespace surrounding the values which is a usability improvement (see example 2 after the code below).
add_shortcode( 'related', 'wpse_related' );
function wpse_related( $atts, $content = '' ) {
// User provided values are stored in $atts.
// Default values are passed to shortcode_atts() below.
// Merged values are stored in the $a array.
$a = shortcode_atts( [
'type' => false,
], $atts );
$output = '';
if ( $a['type'] ) {
// Parse type into an array. Whitespace will be stripped.
$a['type'] = array_map( 'trim', str_getcsv( $a['type'], ',' ) );
}
// Debugging: Display the type parameter as a formatted array.
$output .= '<pre>' . print_r( $a['type'], true ) . '</pre>';
return $output;
}
Example 1:
[related type="2,3,4,5,6"]
Output:
Array
(
[0] => 2
[1] => 3
[2] => 4
[3] => 5
[4] => 6
)
Example 2:
[related type="8, 6, 7,5,30, 9"]
Output:
Array
(
[0] => 8
[1] => 6
[2] => 7
[3] => 5
[4] => 30
[5] => 9
)
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3We could simplify it with e.g.
array_map ( 'trim', str_getcsv( $a['type'], "," ) );birgire– birgire2017-06-09 19:25:18 +00:00Commented Jun 9, 2017 at 19:25 -
2Clever! Thanks for that, @birgire. I've updated my answer.Dave Romsey– Dave Romsey2017-06-09 19:34:07 +00:00Commented Jun 9, 2017 at 19:34
You can pass a JSON object in a short code:
[related values='{"a":"foo","b":"bar"}']
Then you can retrieve passed attributes using json_decode
public static function myshortcode( $atts, $content = null ) {
extract( shortcode_atts( array(
"values" = "",
), $atts ) );
$values = json_decode( $values, true );
// Your Shortcode Functionality here
}
-
2Probably not as userfriendly as csv input. Note that
extract()is no longer recommended in this context, makes it e.g. harder to debug.birgire– birgire2017-06-09 19:26:55 +00:00Commented Jun 9, 2017 at 19:26