Problem:
I have a cred form, for the current user to create answers and this select input is used to choose the parent:
[cred_field field='_wpcf_belongs_sample_id' value='' class='form-control' output='bootstrap']
I need the following functionality:
Current user should not given the ability to create an answer for a sample, he/she has already created. This way, select inputs would become less and less, until zeroed.
So, for each item of the select input: Show parent post, if there is no child created by the current user.
Solution:
We need to add following code in theme’s functions.php file. When user submits CRED form, it will get sample post ID from our custom dropdown and save it as parent in the submitted post using cred_save_data hook.
add_action('cred_save_data', 'prefix_my_cred_cred_save_data_action', 10, 2);
function prefix_my_cred_cred_save_data_action( $post_id, $form_data ){
if ($form_data['id']==39){ //do the following code only if the CRED form ID is 39, adjust this to your CRED form ID
if (!empty($_POST['newparent'])){ //if parent is selected
$parent_id = $_POST['newparent'];
add_post_meta($post_id, '_wpcf_belongs_sample_id', $parent_id, true); //save the ID of the sample as parent of the current post
}
}
}
==> Replace ‘39’ with your CRED form id.
==> Please go through above code, you might also want to change something else in that (field name, etc).
1. You can add your shortcode directly in cred form.
<div class="form-group">
<label>Give your answer</label>
[custom_new_sample_select]
</div>
2. If you find any issue then please don’t do directly ‘echo’ in your custom shortcode. First save them in some variable and then use return statement as follows.
Following Code:
$content = '<select name="newparent" class="form-control" output="bootstrap">';
foreach ($notanswered_sample_list as $post) :
$content .='<option value=' . $post->ID . '>' . $post->post_name . '</option>';
endforeach;
$content .='</select>';
wp_reset_postdata();
return $content;
Relevant Documentation:
https://codex.wordpress.org/Shortcode_API
https://toolset.com/documentation/user-guides/shortcodes-within-shortcodes/
https://toolset.com/documentation/programmer-reference/cred-api/#cred_save_data
