Manipulate Submission Data Using WordPress Filter Hooks

When WS Form read or writes submission meta data, it can be filtered using WordPress filter hooks.

The filter hooks are:

• wsf_submit_meta_update($meta_value, $field_id)
• wsf_submit_meta_read($meta_value, $field_id)

These filters enable you to modify meta values before they are written to the database (i.e. when a form is submitted), and modify meta values when they are read from the database (e.g. when a submission is viewed).

Update

When WS Form writes submission meta data to the database, it passes through this filter hook:

wsf_submit_meta_update($meta_value, $field_id)

• $meta_value is the value being written.
• $field_id is the ID of the field on your form.

An example of manipulating meta values using this filter hook is shown below:

// Add filter for handling submit meta updates
add_filter('wsf_submit_meta_update', 'wsf_submit_meta_update_callback', 10, 2);

// Hook function for wsf_submit_meta_update filter
function wsf_submit_meta_update_callback($meta_value, $field_id) {

    // Switch by field ID
    switch($field_id) {

        // Field ID 123 (Change this to your field ID)
        case 123 :

            // In this example, we'll convert the meta_value to upper case
            // Use your own function here
            $meta_value = strtoupper($meta_value);
            break;
    }

    return $meta_value;
}

Read

When WS Form reads submission meta data from the database, it passes through this filter hook:

wsf_submit_meta_read($meta_value, $field_id)

• $meta_value is the read value from the database.
• $field_id is the ID of the field on your form.

An example of manipulating meta values using this filter hook is shown below:

// Add filter for handling submit meta reads
add_filter('wsf_submit_meta_read', 'wsf_submit_meta_read_callback', 10, 2);

// Hook function for wsf_submit_meta_read filter
function wsf_submit_meta_read_callback($meta_value, $field_id) {

    // Switch by field ID
    switch($field_id) {

        // Field ID 123 (Change this to your field ID)
        case 123 :

            // In this example, we'll convert the meta_value to lower case
            // Use your own function here
            $meta_value = strtolower($meta_value);
            break;
    }

    return $meta_value;
}