Return a url based on a feature attribute in pop-up using Arcade?

[Hayley]

I am trying to embed a URL into my pop-ups for a rubbish collection map. 

If the collection week of a boundary is week one, I want the URL to go to the week one page. 

If the collection week of a boundary is week two, I want the URL to go to the week two page. 

I would like the URL to be embed into the word "here" in the pop-up as seen below:

What expression is needed to pass through the correct URL for each pop-up? I have started with what I have below but am aware URLs need to be formatted in a certain way. Any pointers much appreciated!

if ($feature.Week == "Week 1") {
    return "https://www.ashburtondc.govt.nz/?a=57072"
}

if ($feature.Week == "Week 2") {
    return "https://www.ashburtondc.govt.nz/?a=57073"
}

[wayfaringrob]

You'll want to add the Arcade as an attribute expression, and then point the hyperlink to that expression. It looks like you're using Map Viewer Classic, so that button is here:

Once you're there, try adding this expression:

var week = $feature.Week
decode(week, "Week 1", "https://www.ashburtondc.govt.nz/?a=57072", "Week 2", "https://www.ashburtondc.govt.nz/?a=57073")

Then, with "here" selected in your popup configuration, click Link and enter the name of your attribute expression in brackets, like this:

Click 'Update.'

[Hayley]

Hi @wayfaringrob thanks for your help!

I have created that as a new expression however am getting the error "Execution Error: Must have a default value result."

Am I missing something here? Thanks!

[Hayley]

Hi again @wayfaringrob, I added the default value to the end of the expression and tested with no error.

var week = $feature.Week
decode(week, "Week 1", "https://www.ashburtondc.govt.nz/?a=57072", "Week 2", "https://www.ashburtondc.govt.nz/?a=57073", default)

The pop-up has recognised the word "here" as a hyperlink in the pop-up however it does not navigate to anywhere/can't be clicked. Am I missing something here? Thanks!

[Hayley · Accepted solution]

I found another way around it, using the expression below:

var calendarone = "https://www.ashburtondc.govt.nz/?a=57072"
var calendartwo = "https://www.ashburtondc.govt.nz/?a=57073"

if ($feature.Week == 'Week 1') {
    return calendarone
}
else {
    return calendartwo
}

[wayfaringrob]

Nice! Yeah, the Arcade documentation said the default portion was optional so I'm not sure why it didn't work that way.

[Hayley]

Thanks for your help @wayfaringrob 🙂