insert dynamic value to hidden field.Which API ?

That filter is not correct. If you wanted to target a specific field, by its slug, you can do that.

Lets say your form’s slug was “api” then you would use the filter “caldera_forms_render_get_field_slug-api” or if you wanted to target all hidden fields you could use “caldera_forms_render_get_field_type-hidden”

See this example: https://docs.calderaforms.com/caldera_forms_render_get_field_type-field_type/

Also, these filters are documented inline here: https://github.com/Desertsnowman/Caldera-Forms/blob/b90be47a667d5493d0c6509e57c7be767136b63e/classes/core.php#L3680-L3706

Thanks. You’ve been very helpful

Hi Josh,
Did I miss something? I put my form in bbpress forum every page.I want to get current forum id to specific field,but it didn’t work.I get nothing from specific field after submitting form.If I replace

$field['config']['default'] = bbp_get_forum_id();//get dynamic value

with

$field['config']['default'] = "8256";

I can get the 8256 value from specific field ,but forum id is dynamic. Did I miss something?
If I echo it , it will display correct forum id value,but I get nothing from specific field after submitting form.

$field['config']['default'] = bbp_get_forum_id();//get dynamic value
echo $field['config']['default'];//it will display correct forum id value

This is my script

add_filter( 'caldera_forms_render_get_field_slug-parent','parent_value');
function parent_value($field){
$parent_value= bbp_get_forum_id();
$field['config']['default'] = bbp_get_forum_id();
return $field;
}


When you said you echoed bbp_get_forum_id() in what context were you echoing it?

Did you do it in the callback, like this:

add_filter( 'caldera_forms_render_get_field_slug-parent','parent_value');
function parent_value($field){
$parent_value= bbp_get_forum_id();
var_dump( $parent_value );
return $field;
}

?

If I’m reading the source correctly it uses the global $wp_query object to find the forum ID. That object should be set when that filter runs, but I’m just glancing at source, not actually testing that assumption, which is a big assumption.

Hi Josh,
Thanks for your help.I echo $field['config']['default']; to test , like callback that it will display correct forum id value. But when I run my script,I still get nothing from specific field after submitting form.How to set object when that filter runs ?