Creating a WP archive with custom field filter… and Array to string error

• mkardas

• October 11, 2019 at 8:48 am

Hey everyone.

I’m using the code from this tutorial: https://www.advancedcustomfields.com/resources/creating-wp-archive-custom-field-filter/

I’ve only changed $GLOBALS array with my fields. The code looks like it’s working but it’s showing me a notice

Notice: Array to string conversion in /home/xxx/domains/xxx/public_html/wp-content/plugins/advanced-custom-fields/includes/fields/class-acf-field-radio.php on line 74

74 line is the last one:

	function render_field( $field ) {

		// vars
		$i = 0;
		$e = '';
		$ul = array( 
			'class'				=> 'acf-radio-list',
			'data-allow_null'	=> $field['allow_null'],
			'data-other_choice'	=> $field['other_choice']
		);
		
		
		// append to class
		$ul['class'] .= ' ' . ($field['layout'] == 'horizontal' ? 'acf-hl' : 'acf-bl');
		$ul['class'] .= ' ' . $field['class'];
		
		
		// select value
		$checked = '';
		$value = strval($field['value']);
		

Functions.php code:

// array of filters (field key => field name)
$GLOBALS['my_query_filters'] = array(
	'field_5d9d111193121'	=> 'czas_przygotowania',
	'field_5d9d10cf93120'	=> 'poziom_trudnosci'
);

// action
add_action('pre_get_posts', 'my_pre_get_posts', 10, 1);

function my_pre_get_posts( $query ) {

	// bail early if is in admin
	if( is_admin() ) return;

	// bail early if not main query
	// - allows custom code / plugins to continue working
	if( !$query->is_main_query() ) return;

	// get meta query
	$meta_query = $query->get('meta_query');

	// loop over filters
	foreach( $GLOBALS['my_query_filters'] as $key => $name ) {
		// continue if not found in url
		if( empty($_GET[ $name ]) ) {

			continue;

		}

		// get the value for this filter
		// eg: http://www.website.com/events?city=melbourne,sydney
		$value = explode(',', $_GET[ $name ]);

        // append meta query

        $meta_query = array(
            array(
                'key'     => $name,
                'value'       => $value,
                'compare'  => 'IN',
            )
        );

	}

	// update meta query
	$query->set('meta_query', $meta_query);

}

archive.php code:

	<div id="archive-filters">
	<?php foreach( $GLOBALS['my_query_filters'] as $key => $name ):

		// get the field's settings without attempting to load a value
		$field = get_field_object($key, false, false);

		// set value if available
		if( isset($_GET[ $name ]) ) {

			$field['value'] = explode(',', $_GET[ $name ]);

		}

		// create filter
		?>
		<div class="filter" data-filter="<?php echo $name; ?>">
			<?php create_field( $field ); ?>
		</div>

	<?php endforeach; ?>
	</div>

Script:

<script type="text/javascript">
(function($) {

	// change
	$('#archive-filters').on('change', 'input[type="radio"]', function(){

		// vars
		var url = '<?php echo home_url('przepisy'); ?>';
			args = {};

		// loop over filters
		$('#archive-filters .filter').each(function(){

			// vars
			var filter = $(this).data('filter'),
				vals = [];

			// find checked inputs
			$(this).find('input:checked').each(function(){

				vals.push( $(this).val() );

			});

			// append to args
			args[ filter ] = vals.join(',');

		});

		// update url
		url += '?';

		// loop over args
		$.each(args, function( name, value ){

			url += name + '=' + value + '&';

		});

		// remove last &
		url = url.slice(0, -1);

		// reload page
		window.location.replace( url );

	});

})(jQuery);
</script>

What I’m doing wrong? I’ve tried to use input[type=”checkbox”] but I’ve found an answer, that’s bad solution and it’s not working (url: https://wordpress.stackexchange.com/questions/336715/meta-query-in-doesnt-work-with-acf-checkbox-filter).

I’ve searched many topic before I decided to create a new one. Please help me.

• mkardas

• October 11, 2019 at 12:08 pm

I’ve fixed the problem, because I can’t use explode() and radio buttons. Now I’m using checkboxes, nevermind.

But I have an another problem, because the last checkbox (in the first and second checkboxes group) is always checked and label class is “selected”

<li>
<label class="selected">
<input type="checkbox" id="acf-field_5d9d111193121-ponad_60_minut" name="acf[field_5d9d111193121][]" value="ponad_60_minut" checked="checked"> ponad 1h
</label>
</li>

For example. I have a data-filter: colors, and three checkboxes:
– BLUE
– RED
– GREEN

and green is default checked, so when I check red I have two values checked.

What I can do to default disable those checkboxes?

The function which is creating the checkboxes is:

<?php create_field( $field ); ?>

• mkardas

• October 11, 2019 at 12:40 pm

I can’t edit posts…

It’s displaying the values from first looped article. How to fix it?