Set up a widget output data source without OriginDataSources

clc

I am developing a very simple widget that generates a feature layer. This widget does not have any setting file as it does not require any input data sources. I would like to create an output data source with the feature layer data. Here is the beginning of my widget.tsx code:

const [myDSout, setMyDSout] = useState<FeatureLayerDataSource>(null)

const outputDsJsons: DataSourceJson[] = [{
id: "widget_1_ouput",
isOutputFromWidget: true,
isDataInDataSourceInstance: true,
label: "MyDSoutput",
type: "FEATURE_LAYER"
}]
DataSourceManager.getInstance().createDataSource(outputDsJsons[0]).then((result: FeatureLayerDataSource) => {
setMyDSout(result);
});

I got the following message: "Datasource without origin data source must save the schema in app config"

I have manually modified the entry for "widget_1_ouput" in the dataSources section of the config file of my app (the one found in the server\public\apps\3\resources\config) with an entry schema without any effects.

Obviously this is not the right approach, so here is my question: What is the right way to save a schema in an app config?

Thanks for any comments. 

jsilhavy

Hi Cathrine,

thank you for your sample.

I am not using the buildRecord() method, so I do not encouter this problem.

Based on your error message, it looks like you are not getting the DataSource object using the getOutputDataSource method.
The error says that the buildRecord method does not exist on the object you get.

I would try setting a breakpoint on that line and see what the minified variable t is.
Or put a control statement in the console:
console.log(getOutputDataSource().id) to see if it finds the correct data source.
Or try creating a Recod using the FeatureDataRecordImpl method from 'jimu-core/data-source', for example:
const record = new FeatureDataRecordImpl(myline1, getOutputDataSource());
But I think the problem is in getting the output datasource.
Good luck.

Jakub