Hi Andy,
Sorry I’ve been involved in some personal stuff the past few days 🙂
To be honest I’ve not used the acf_form in this sense before.
What seems strange to me is that you’re setting post_title, post_content and post_category by using $_POST values but if you’re sending the user to this form with just a button there wont be any $_POST variables like this.
The way I’d do it is to just have a taxonomy field on the posts which are mapping the post to the terms (categories) and then add it to the acf_form by setting it in the field_group. Then for the title and content you have built in parameters in acf_form to let users type into those.
Something like:
<?php acf_form(array(
'post_id' => 'new_post',
'new_post' => array(
'post_type' => 'post',
'post_status'=> 'publish'
),
'field_groups' => array(317, 123), // 317 is your existing field group and 123 is a madeup which contains the taxonomy field.
'submit_value' => 'Submit Post',
'updated_message' => 'Saved!'
)); ?>
You shouldn’t need to mess with $_POST parameters and filters.
