Custom Meta Box Checkbox Issue WordPress

Lew Ayotte answers:

You need to make sure $accreditations is an array value that contains any of the checked values... then you need to set the input name to accreditations[] (to signify the HTML can contain multiple values). When you check, simply do the in_array function. By the way, WordPress has a nifty helper function called "checked" it will output the proper HTML if the value is true. You're output "checked" isn't valid HTML in all browsers...

See this code:

<?php

echo '<label for="accreditations">' . __("Accreditations", 'myplugin_textdomain' ) . '</label>';

?>
<input type="checkbox" name="accreditations[]" value="aaa_tourism" <?php checked( in_array( 'aaa_tourism', $accreditations ) ); ?> /> AAA Tourism

<input type="checkbox" name="accreditations[]" value="accredited_tourism_business_australia" <?php checked( in_array( 'accredited_tourism_business_australia', $accreditations ) ); ?> /> Accredited Tourism Business Australia

<input type="checkbox" name="accreditations[]" value="environmentally_friendly" <?php checked( in_array( 'aaa_tourism', $environmentally_friendly ) ); ?> /> Environmentally Friendly

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Denzel Chia answers:

Hi,

Using name="accreditations[]" for your checkbox is correct.
This will post the values as an array to your save post meta function, and it will be saved as an array.
To avoid PHP error, i assume that you use
$accreditation = get_post_meta($post_id,'accreditation',true);
to retrieve your post meta value.

You need to use foreach to loop the array before assigning back to your checkbox to determine which box to check. This also applies to your single.php where you are echoing out the values!

I am not sure what are your codes, therefore I can only assume and give you examples.

For your form it should be something like this, since your post meta is an array value.


<?php
global $post;
$post_id = $post->ID;
$acc = array();
$acc = get_post_meta($post_id,'accreditations',true);

echo'<label for="accreditations">' . __("Accreditations", 'myplugin_textdomain' ) . '</label>';

echo '<input type="checkbox" name="accreditations" value="aaa_tourism"';

foreach($acc as $accreditations){
if($accreditations == 'aaa_tourism'){echo 'checked';}else{echo '';};
}

echo' /> AAA Tourism';

echo '<input type="checkbox" name="accreditations" value="accredited_tourism_business_australia"';

foreach($acc as $accreditations){
if($accreditations == 'accredited_tourism_business_australia'){echo 'checked';}else{echo '';};
}

echo '/> Accredited Tourism Business Australia ';

echo '<input type="checkbox" name="accreditations" value="environmentally_friendly"';

foreach($acc as $accreditations){
if($accreditations == 'environmentally_friendly'){echo 'checked';}else{echo '';};
}

echo '/> Environmentally Friendly';

}
?>



And for your single.php, it should be something like this.


<?php

//for echo out accreditations
//assuming post meta key is accreditations

global $post;
$post_id = $post->ID;
$accreditations = get_post_meta($post_id,'accreditations',true);
$template_url = get_bloginfo('template_url');

foreach($accreditations as $accres){

switch ($accres) {
case "aaa_tourism":
echo "<img src='$template_url/images/logo-aaa-tourism.png' title='AAA Tourism'>";
break;
case "accredited_tourism_business_australia":
echo "<img src='$template_url/images/logo-atba.png' title='Accredited Tourism Business Australia'>"; break;
case "environmentally_friendly":
echo "<img src='$template_url/images/logo-environmentally-friendly.png' title='Environmentally Friendly'>";
break;
}
}
?>


Thanks.