Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Get Fabric Certified for FREE during AI Skills Fest. This week only. Secure your voucher now.

Reply
MarkusEng1998
Resolver II
Resolver II

API loop with List.Empty - access column from previous step

Thanks to @lbendlin, I found a tip to terminate an API loop with List.Empty.

 

However my reference to the projNo column in the List.Generate() is erroring when I expand the table list.api 2024-05-03_08-41-37.jpg

 

#"02ListGenerate = Table.AddColumn(#"01filterProject", "dRofusRecord", each List.Generate(() =>
		[proj = [projNo], skip = 0,  top = 50, recordList = getURI(proj, top, skip)],

		each not List.IsEmpty([recordList]),
	
		each [proj=[projNo],
			skip = [skip] + [top], 
			top = [top],
			recordList = getURI(proj, top, skip)]
))

Thank you for any guidance.

1 ACCEPTED SOLUTION

In the List.Generate() I changed proj=[projNo] to projNo = [projNo].

This now works!

 

= Table.AddColumn(#"01filterProject", "dRofusRecord", each List.Generate(() =>
[projNo = [projNo], skip = 0,  top = 50, recordList = getURI(projNo, top, skip)],

each not List.IsEmpty([recordList]),

each [projNo = [projNo],
      skip = [skip] + [top], 
      top = [top],
       recordList = getURI(projNo, top, skip)]
))

 

Thank you again @lbendlin for prompting the question. I appreciate this forum because submitting the question forces me to better understand the "problem statement."

 

View solution in original post

3 REPLIES 3
lbendlin
Super User
Super User

What's the error message?

Expression.Error: The field 'projNo' of the record wasn't found.

api 2024-05-03_09-20-24.jpg

 

getURI()

(projNo as text, topVal as number, skipVal as number)=>
let
    #"FilterColumnTable" = Table.SelectRows(#"102APImapRooms100", each ([ObjectType] = "rooms")),
    GetWebContents =
        Web.Contents(
            "https://api-us.drofus.com/api/company/",
            [
                RelativePath= projNo
                & "/rooms" 
                & "?$select=" & Text.Combine(#"FilterColumnTable"[dRofus.ID], ",")
                & "&$top=" & Number.ToText(topVal)
                & "&$skip=" & Number.ToText(skipVal) 
            ]
        ),
    convertedJson = Json.Document(GetWebContents,65001),     
        in
            convertedJson

In the List.Generate() I changed proj=[projNo] to projNo = [projNo].

This now works!

 

= Table.AddColumn(#"01filterProject", "dRofusRecord", each List.Generate(() =>
[projNo = [projNo], skip = 0,  top = 50, recordList = getURI(projNo, top, skip)],

each not List.IsEmpty([recordList]),

each [projNo = [projNo],
      skip = [skip] + [top], 
      top = [top],
       recordList = getURI(projNo, top, skip)]
))

 

Thank you again @lbendlin for prompting the question. I appreciate this forum because submitting the question forces me to better understand the "problem statement."

 

Helpful resources

Announcements
Fabric Data Days is here Carousel

Fabric Data Days 2026

Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.

May Power BI Update Carousel

Power BI Monthly Update - May 2026

Check out the May 2026 Power BI update to learn about new features.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.

Top Kudoed Authors