Use Widget Value in Server Script - google-app-maker

Question

I may be overthinking this drastically, but what is the easiest way to access a widget's value in a server script?
In my particular case, I am trying to use a dropdown widget's value as the filter for a calculated model query.
function getMonthlyTotalsByResource_() {
var allRecordsQuery = app.models.Allocations.newQuery();
allRecordsQuery.filters.Approved._equals = true;
allRecordsQuery.filters.Resource.Manager.ManagerName._equals = /* How do I make the widget's value available here? */
var allRecords = allRecordsQuery.run();
...
...

Answer 1

In your calculated model datasource in the server script have the following:
return getMonthlyTotalsByResource_(query);
Still in your model datasource add a parameter ('String?') and call it ManagerName.
On your page with the dropdown bind the value of the widget to #datasource.properties.ManagerName
In your server script function change to the following:
function getMonthlyTotalsByResource_(query) {
var allRecordsQuery = app.models.Allocations.newQuery();
allRecordsQuery.filters.Approved._equals = true;
allRecordsQuery.filters.Resource.Manager.ManagerName._equals =
query.parameters.ManagerName;
var allRecords = allRecordsQuery.run();

Answer 2

The easiest way to do this is to add a parameter to the datasource of your calculated model. Then bind something to it from the client side (e.g. bind to datasource.mycalculatedds.parameters.myparam ).
Then pass the default 'query' object from your calculated datasource. For example in your calculated DS, where you call your function, call
getMonthlyTotalsByResource_(query). Then you can set something like
var thismanager = query.parameters.myparam

Answer 3

// get widget value
function getWidgetValue() {
var val = app.PAGES.YOUR_PAGE.descendants.WIDGET_NAME.value;
return val;
}
// execture query
function getMonthlyTotalsByResource_(widgetValue) {
var allRecordsQuery = app.models.Allocations.newQuery();
allRecordsQuery.filters.Approved._equals = true;
allRecordsQuery.filters.Resource.Manager.ManagerName._equals = widgetValue;
var allRecords = allRecordsQuery.run();
}
// run
getMonthlyTotalsByResource_(getWidgetValue);