acf/validate_attachment/type=(type) │ filter-hook │ ACF 5.2.3

Filters the errors for a file before it is uploaded or displayed in the media modal.

Usage

add_filter( 'acf/validate_attachment/type=(type)', 'wp_kama_acf_validate_attachment_type_filter', 10, 5 );

/**
 * Function for `acf/validate_attachment/type=(type)` filter-hook.
 * 
 * @param array  $errors     An array of errors.
 * @param array  $file       An array of data for a single file.
 * @param array  $attachment An array of attachment data which differs based on the context.
 * @param array  $field      The field array.
 * @param string $context    The curent context (uploading, preparing)
 *
 * @return array
 */
function wp_kama_acf_validate_attachment_type_filter( $errors, $file, $attachment, $field, $context ){
	// filter...
	return $errors;
}

$errors(array)

An array of errors.

$file(array)

An array of data for a single file.

$attachment(array)

An array of attachment data which differs based on the context.

$field(array)

The field array.

$context(string)

The curent context (uploading, preparing)

Changelog

Where the hook is called

$errors = apply_filters( "acf/validate_attachment/type={$field['type']}", $errors, $file, $attachment, $field, $context );

Where the hook is used in Advanced Custom Fields PRO

add_filter( 'acf/validate_attachment/type=image', 'acf_validate_is_image_attachment', 10, 5 );

add_filter( 'acf/validate_attachment/type=gallery', 'acf_validate_is_image_attachment', 10, 5 );