dynamically populate field using variable

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les112
Member
I want to dynamically populate the category field using the parameter categoryid. In an earlier post by Kevin there was the following code snippet
```
<?php
add_filter("gform_field_value_categoryid", "populate_categoryid");
function populate_categoryid($value){
return  "55" ;
}
?>
```
where "55" is the explicit value for the parameter categoryid. This works.
But I don't wan't to enter the explicit value by hand but rather use the variable $category_id, which has been calculated earlier in the theme function.
What modification to the above code snippet needs to be done to use the variable $category_id rather than the explicit value "55".
Posted 13 years ago on Sunday March 27, 2011 | Permalink
teabagstudios
Member
I used this, it's pretty much the same but you just use whatever WP function to pull out the value; in my case, a post title.
```
function populate_title(){
        $UTitle_value = get_the_title();
    return $UTitle_value;
    }
add_filter("gform_field_value_UTitle", "populate_title");
```
I guess you've done it already, but you'll need to create an input, set it so it can be populated dynamically, then give it the parameter name you specified in the function; in my case UTitle.

Multiple categories, category child / parent etc. could cause you some problems.
Posted 13 years ago on Monday March 28, 2011 | Permalink
les112
Member
Thanks teabag for your reply. Sorry about the time delay but I am in Australia with different timezone.
I couldn't get your code to work..
The following worked. The closest I got to getting the page title, which I also want, was the page name using get_query_var('category_name')
```
add_filter("gform_field_value_categoryid", "populate_categoryid");
function populate_categoryid($value){
return get_query_var('cat');
}
```
Posted 13 years ago on Tuesday March 29, 2011 | Permalink