How can you express a multi-key object via an object comprehension?

[bleggett]

So I wanna use array and object comprehension to build a list of objects, but each object has multiple keys and for the life of me the only way I can figure out how to get this to work is via using object.merge to merge two single-kv objects, like so:

obj_list := [st | st = object.union(
	{key:val| key = "entity_identifier"; val = attrs[i].entity_identifier}, 
	{key2:val2| key2 = "entity_attributes"; val2 = [{
			"attribute": "https://example.org/attr/OPA/value/AddedByOPA",
			"displayName": "Added By OPA"
			}]}
); attrs[i]]

Am a missing a way to express multi-property objects in a single object comprehension, or is the above the only way to do this?

[anderseknert]

Hi @bleggett! Maybe I'm missing something too :) Is there some reason you need to use object comprehensions at all here?

obj_list := [obj | 
    some attr in attrs
    obj := {
    	"entity_identifier": attr.entity_identifier,
        "entity_attributes": [{
	    "attribute": "https://example.org/attr/OPA/value/AddedByOPA",
            "displayName": "Added By OPA"
        }]
}]

[bleggett]

@anderseknert AH! Thank you - I had missed the existence of the in keyword (and the need to import future.keywords.in to get it to work)

Correct, much simpler. Thanks much!