How to conditional statements in action output in Bixby - bixby

Question

Hi I want to go to another action by putting a conditional statement in the action output.
What should I do?
For example
action (~~) {
description (Validate items passed from javascript)
collect {
input (~~) {
type (~~)
min (~~) max (~~)
}
}
type(~~~)
output (items){
on-empty(items.item1){ // if items.item1 is empty.
replan { // go to case1Action.
intent {
goal : case1Action
value : ~~~~~
}
}
}else{ // else
replan { // go to case2Action.
intent {
goal : case2Action
value : ~~~~~
}
}
}
}
or I want to select the view according to the output value.(Actually this is the purpose of the question)
output (items){
if(items.item1 == "goFirstCase"){
// First case view
}else{
// Second case view
}
}

Answer 1

I think by "select a different view according to the output value" I presume you mean you want to change what shows on the screen? because a "view" actually is comprised of the dialog, layout, and conversation-drivers.
https://bixbydevelopers.com/dev/docs/dev-guide/developers/building-views.views
For majority of use cases, there's really only one result-view that will be used, and any of the three contents of a view can be changed based on your preferred conditions as the above answer suggests.
within a view you can have the three different components defined with these three blocks: message for dialog, render for layout, and conversation-drivers
using your example,
//in a result-view
message {
if (items.item1 == "firstCase") {
template-macro (firstCase-result-dialog) {//enter params}
}
}
render {
if (size(items) > 1) {
list-of (items) {
where-each (item) {
if (item == "firstCase") {
layout-match (item) {
mode (Summary)
}
// OR use layout-macro
layout-macro (firstCase-result-summary-thumbnail-card) {//enter params}
}
}
}
}
}
similar conditional work can be done on conversation-drivers of course.

Answer 2

In your case, you would not need on-empty in action, but use template-macro-def as briefly explained in https://corp.bixbydevelopers.com/dev/docs/dev-guide/developers/refining-dialog.dialog-macros
// template file one
template-macro-def (id1) {
params {
param (x) {
Type (Items) ....
}
// template file two
template-macro-def (id2) {
// param x is type Items
}
//view file
result-view {
match: Items(this)
// after some checking make sure is single item
// it is possible to use other condition like if (this.sub1 == 2)
if (exists(this.sub1)) {
template-macro (id1) {
param (x) { expression (this) }
}
}
else {
template-macro (id2) {
param (x) { expression (this) }
}
}
The above would be the recommended way to handle different views for same concept in Bixby.
on-empty in action would be used for the purpose of either replan or relax some search condition in order to avoid 0 result. Bixby does not support on-empty(key) {} syntax according to https://corp.bixbydevelopers.com/dev/docs/reference/type/action.output.on-empty and on-empty would only apply in your case if output(items) itself is empty and would not check any sub-property of items.

Answer 3

Another option.
instead to use 'on-empty' block, you can use 'throws - error'
in action model,
output (items) {
throws {
error (case1ActionError) {
on-catch {
replan {
intent {
goal : case1Action
value : ~~~~~
}
}
}
}
error (case2ActionError) {
on-catch {
replan {
intent {
goal : case2Action
value : ~~~~~
}
}
}
}
}
}
And, in js code,,
if (error condition1) {
throw fail.checkedError('case 1 error', 'case1ActionError')
} else if (error condition2) {
throw fail.checkedError('case 2 error', 'case2ActionError')
}
For fail, refer to https://bixbydevelopers.com/dev/docs/reference/JavaScriptAPI/fail#failcheckederrormessage-errorid-errorobj