Problem: I have a CRED form that creates child posts. I would like to have the parent post be automatically assigned as the current post where the CRED form is displayed. I would also like a custom field value to be automatically the current User's name.
Solution:
There are two ways you can predefine a CRED form field value. You can use the "value" attribute, or you can use the "urlparam" attribute. The value attribute allows you to pass a value in using another shortcode, and the urlparam attribute allows you to capture a URL parameter variable and use that as the value.
You can use the wpv-user shortcode and the value attribute to predefine the user's name:
[cred_field field="your-field-slug" post="your-post-type-slug" value="[wpv-user field='user_firstname'] [wpv-user field='user_lastname']"]
The urlparam value will pass in a URL parameter value to any field:
[cred_field field='_wpcf_belongs_parentslug_id' urlparam='wpvpostparent' select_text='--- not set ---' class='form-control' output='bootstrap']
Then you can link to your CRED form page using the wpvpostparent URL parameter to specify a parent post ID:
http://yoursite.com/cred-form-page?wpvpostparent=12345
If you want to use the current post ID as the value of the parent field, you can use the wpv-post-id shortcode and the $current_page operator:
[cred_field field='_wpcf_belongs_parentslug_id' value='[wpv-post-id id='$current_page']' select_text='--- not set ---' class='form-control' output='bootstrap']
Pro tip: if you want to hide the predefined parent select field you can wrap it in a hidden div:
<div style="display:none;">
[cred_field field='_wpcf_belongs_parentslug_id' value='[wpv-post-id id='$current_page']' select_text='--- not set ---' class='form-control' output='bootstrap']
</div>
Relevant Documentation:
https://toolset.com/documentation/user-guides/cred-shortcodes/#cred_field
https://toolset.com/documentation/user-guides/views-shortcodes/#wpv-post-id
https://toolset.com/documentation/user-guides/views-shortcodes/#wpv-user
