I've got a field like this...
<input type="text" name="summary" value="" required /> ...which I am easily able to sanitize_text_field and add_post_meta with this...
$summary = sanitize_text_field($_POST["summary"]); add_post_meta( $post_id, 'summary', $summary); But when it comes to the additional post_meta I need to store in the DB, I don't know how to go about it because I don't know how many additional fields there will be in the form. It will vary.
So the additional form fields could be like this...
<input type="text" name="cat_01" value="" /> <input type="number" name="dog_01" value="" /> <input type="number" name="rabbit_01" value="" /> <input type="text" name="mouse_01" value="" /> <input type="text" name="cat_02" value="" /> <input type="number" name="dog_02" value="" /> <input type="number" name="rabbit_02" value="" /> <input type="text" name="mouse_02" value="" /> ...but sometimes there could be a 3rd set of these fields, or a fourth etc and there's really no limit, and I don't know how many sets of these fields there will be.
So for example if there is a 3rd set of these fields they will look like:
<input type="text" name="cat_03" value="" /> <input type="number" name="dog_03" value="" /> <input type="number" name="rabbit_03" value="" /> <input type="text" name="mouse_03" value="" /> So you get the idea.
How can I sanitise and add_post_meta when I don't know what I'm going to be capturing?
Cheers.
3 Answers
Answers 1
Why don't you make it easy on yourself and save all those in an array something like this:
<!-- With type --> <input type="text" name="animal[dog][]" value=""/> <input type="text" name="animal[cat][]" value="" /> <!-- No Type --> <input type="text" name="animal[]" value="" /> You get the idea right?
On the backend then you can get the fields with
if( isset( $_POST['animal'] ) ) { $sanitized_array = array(); foreach( $_POST['animal'] as $type ) { if( is_array( $type ) ) { // This is a type, let's go over that // If it does not exist, create it if( ! isset( $sanitized_array[ $type ] ) ) { $sanitized_array[ $type ] = array(); } foreach( $type as $value ) { $sanitized_array[ $type ][] = sanitize_text_field( $value ); } } else { // It is not an array, so it's a value instead $sanitized_array[] = sanitize_text_field( $value ); } } // We have our sanitized array, let's save it: update_post_meta( $post_id, 'animal', $sanitized_array ); } That is something similar I already have created where the fields are done dynamically and we don't know how much we will need to save.
I hope this will give you a guide on how to make that.
Answers 2
You can use foreach to iterate any number of fields. Example:
foreach($_POST as $name=>$value){ $sanitizedValue = sanitize_text_field($value); add_post_meta($post_id, $name, $sanitizedValue); } Answers 3
In the below code I have taken an array with limit 4 you can put until you have used your sets of animals. then check which one is posted then santized that post variable.
$sanited_array = array(); for($i = 1 ; $i < 4 ; $i++) { if(isset($_POST['cat_0'.$i])) { $sanited_array['cat'][] = sanitize_text_field($_POST['cat_0'.$i]); } if(isset($_POST['dog_0'.$i])) { $sanited_array['dog'][] = sanitize_text_field($_POST['dog_0'.$i]); } if(isset($_POST['rabbit_0'.$i])) { $sanited_array['rabbit'][] = sanitize_text_field($_POST['rabbit_0'.$i]); } if(isset($_POST['mouse_0'.$i])) { $sanited_array['mouse'][] = sanitize_text_field($_POST['mouse_0'.$i]); } } update_post_meta( $post_id, 'animal', $sanited_array ); 
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