I have an Observable listening to the URL and I am switch
ing it to a getRows()
which returns an Observable pulling data back from the API with the URL parameters. I want to be able get a Subscription reference for every emit that getRows()
does. This is to show a loading indicator on the UI.
The current code:
this.tableSource = this.urlParamService.getParameterGroup(this.parameterPrefix)
.distinctUntilChanged()
.map(p => this.getRows(p))
.switch()
.share();
And then explicitly when I have changed the parameters I have been calling:
this.tableLoad = this.tableSource.take(1).subscribe((r) => this.rows = this.parseRows(r));
But I want to enable the component to update when external entities manipulate the URL and so I should be subscribing instead of sharing tableSource
, so how can I get a Subscription everytime I call getRows()
, is it possible?
I managed to solve it this way:
this.urlParamService.getParameterGroup(this.parameterPrefix)
.distinctUntilChanged()
.do(p => {
this.tableLoad = this.getRows(p).subscribe((r) => this.rows = this.parseRows(r));
})
.subscribe();
So I stopped trying to use both Observable sequences as one (even though one depends on the other), and just subscribed to the second as a side effect of the first.
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