Using FeatureSetByRelationshipName in Attribute Rules

Z_Knoble — Thu, 04 Mar 2021 21:55:01 GMT

I am new to both Arcade and Attribute Rules. I am trying to create a calculation rule that is triggered by inserts, but my expression using FeatureSetByRelationshipName doesn't seem to be doing anything.

Here is the expression:

var test = FeatureSetByRelationshipName($feature, 'FH_MR_TR_REL', ["COMMENT_"], false);

return test;

I am applying the attribute rule to a table and trying to pull data from a field in a related feature class. 'FH_MR_TR_REL' is the relationship class and 'COMMENT_' is the field in the related feature class that I am trying to pull from.

I didn't get any errors, but the destination field remains null after inserting a new table record. I am sure I missing something obvious; any help would be appreciated.

Re: Using FeatureSetByRelationshipName in Attribute Rules

JimmyBowden — Mon, 11 Oct 2021 21:57:54 GMT

Because FeatureSetByRelationshipName returns a FeatureSet that may have more than one row. You can't just return it you have to get a value from a row. Assuming you have a one to one relationship you can just get the First one:

if (!IsEmpty(test)) { return First(test).COMMENT_ }

If you have one to many, you would have to apply more logic to decide which one you want.

topic Re: Using FeatureSetByRelationshipName in Attribute Rules in ArcGIS Pro Questions

Using FeatureSetByRelationshipName in Attribute Rules

Re: Using FeatureSetByRelationshipName in Attribute Rules