Hi,
Welcome to BuddyDev.

If I understand correctly, you are looking to restrict the options of a profile field? This is not doable(we can certainly do it via hooks but let us see if we really need to do).

I am assuming your purpose is to either display it on profile or use it for search purpose?
If it is for search purpose, It is better to decide the value based on the reverse of “I am a” field.

If it is for display purpose only, why not create two fields(not advisable for search) and show hide using conditional field?

Regards
Brajesh

Hi,
I had a look at the registration page.

1. Please disable the conditional field plugin. You do not need that for this case.
2. I will post some code(in couple of hours) to help you get it working.

Regards
Brajesh

Hi,

Please put this code in your bp-custom.php (or theme’s functions.php)
It will hide the I Research field on Registration/Edit profile and update its value from the “I am” field.

I have used the field id from your site.

/**
 * Update value of the dest field when source is updated.
 *
 * @param BP_XProfile_ProfileData $object data object.
 */
function buddydev_sync_to_field_data_to_other_field_on_update( $object ) {
	// Field id, whose value we use to determine the calculated value for the synchronized field.
	$sync_source_field_id      = 3; // field when change, triggers change to the sync field.
	// this is the field whose value will be updated based on the calculation.
	$sync_dest_field_id = 6;// field we will update.

	// If it is not the source field id, don't do anything.
	if ( $object->field_id != $sync_source_field_id ) {
		return;
	}

	$value       = $object->value;
	$value       = maybe_unserialize( $value );
	$other_value = '';

	if ( empty( $value ) ) {
		// delete.
		xprofile_delete_field_data( $sync_dest_field_id, $object->user_id );

		return;
	}
	// Determine, what value we should set.
	// This is the block that we use to calculate
	// you will need to update for your use case.
	if ( 'Un Homme' == $value ) {
		$other_value = 'Une Femme';
	} else {
		$other_value = 'Un Homme';
	}
	// If the sync_destination field is select/radio, make sure the calculated value is what you have
	// added as option the the field add/edit screen. Should match exactly.
	// set teh value.
	xprofile_set_field_data( $sync_dest_field_id, $object->user_id, $other_value );
}
// On update.
add_action( 'xprofile_data_after_save', 'buddydev_sync_to_field_data_to_other_field_on_update' );

// On delete.
function buddydev_sync_to_field_data_to_other_field_on_delete( $object ) {
// Field id, whose value we use to determine the calculated value for the synchronized field.
	$sync_source_field_id      = 3; // field when change, triggers change to the sync field.
	// this is the field whose value will be updated based on the calculation.
	$sync_dest_field_id = 6;// field we will update.

	// If it is not the source field id, don't do anything.
	if ( $object->field_id != $sync_source_field_id ) {
		return;
	}

	xprofile_delete_field_data( $sync_dest_field_id, $object->user_id );
}
add_action( 'xprofile_data_after_delete', 'buddydev_sync_to_field_data_to_other_field_on_delete' );

/**
 * Hide the synchronized field from Registration/Edit profile fields. Its value is set programatically.
 * @param $args
 *
 * @return mixed
 */
function buddydev_exclude_sync_profile_field_in_edit_context( $args ) {

	if ( ! bp_is_user_profile_edit() && ! bp_is_register_page() ) {
		return $args;
	}

	$sync_to_field    = 6;
	$exclude_fields   = isset( $args['exclude_fields'] ) ? explode( ',', $args['exclude_fields'] ) : array();
	$exclude_fields[] = $sync_to_field;

	$args['exclude_fields'] = join( ',', $exclude_fields );

	return $args;
}

add_filter( 'bp_after_has_profile_parse_args', 'buddydev_exclude_sync_profile_field_in_edit_context' );

Regards
Brajesh