With a date field, there are only two ways I can think to do this.
1. Have an additional custom field in the posts where one of those 3 labels is the choice.
2. Use code. How this would work is:
# Set the form UI field to a number range field, like this (in this case I chose a radio field, but a dropdown would also work, I think):
https://www.screencast.com/t/rpY6G9KLnX
Ignore my field name! Use what you have as a field name.
Then add code like this to your child theme functions.php file (change the field name, form ID number and dates to work for you):
function update_field_options($input_object, $sfid){
// ensure we are only filtering the correct field name in the correct form - in this case the field we want to filter has the name '_sfm_first_date_to', based on the field name 'first_date_to'
if( $input_object['name'] == '_sfm_first_date_to' && $sfid == 42 ) {
// if we want to filter the options generated, we need to make sure the options variable actually exists before proceeding (its only available to certain field types)
if( ! isset( $input_object['options'] ) ) {
return $input_object;
}
//udpate this field before rendering
//all the options are stored in $input_object['options'] as an array
$new_options = array();
//create a new "default" option
$new_option = new StdClass();
$new_option->value = "";
$new_option->label = "All Ages";
array_push($new_options, $new_option);
//create a new range option we want to add
$new_option = new StdClass();
$new_option->value = "19900101+29991231"; //this is the value that goes in the URL, which affects the query
$new_option->label = "Latest"; //the label can be anything
array_push($new_options, $new_option);//create a new range option we want to add
$new_option = new StdClass();
$new_option->value = "0+19561231"; //this is the value that goes in the URL, which affects the query
$new_option->label = "Golden Age"; //the label can be anything
array_push($new_options, $new_option);
$new_option = new StdClass();
$new_option->value = "19570101+19891231"; //this is the value that goes in the URL, which affects the query
$new_option->label = "Silver Age"; //the label can be anything
array_push($new_options, $new_option);
//now replace the options with our own custom options:
$input_object['options'] = $new_options;
}
return $input_object;
}
add_filter('sf_input_object_pre', 'update_field_options', 10, 2);
You can see what it looks like on this demo I made (it is not functional as the data does not match!!):
https://sandfdev.cdnwebservices.net/shop/
I hope that makes sense!
It assumes that the date data is correctly stored in ACF/SQL date format(YYYYMMDD).
.
