Use ACF array values in shortcode

Question

I have a client using some third party forms that I want to easily drop in places on their site.

To easily update them site-wide I thought I would create an ACF repeater field on an options page with fields for form_id and form_markup that I could use to build the shortcode. The idea being a user could enter just the id of the form in the shortcode and the form would output.

i.e. [form form_id="1"]

The question is: how do I call the proper ID from the array of data? Here's where I started:

function form_shortcode( $atts ) {

    // Attributes
    shortcode_atts(
        array(
            'form_id'   => '',
        ), $atts
    )

    $forms = get_field( 'forms', 'option' );
    foreach ( $forms as $form ) {
        $form_id = get_sub_field( 'form_id', 'option' );
    }

    return $form_id;

}

add_shortcode( 'form', 'form_shortcode' );

I know this isn't correct, but I'm having trouble figuring out exactly how this should even work logistically. Am I even close?

Answer 1

$atts['form_id'] contains the form_id that was passed with the Shortcode. You are searching for this form_id among the data that is held in the forms field.

$forms is an array, and each item in the array is another array with your two keys: form_id and form_markup.

So, for each item in $forms, you want to check if that form_id matches the form_id requested in the Shortcode. if there is a match, return the form_markup from that item.

If no matches were found, return an error message.

$forms = get_field( 'forms', 'option' );
foreach ( $forms as $form ) {
    if( $atts['form_id'] == $form['form_id'] ){
        return $form['form_markup'];
    }
}

return 'form id ' . $atts['form_id'] . ' not found';