lang/funcs: lookup() can work with maps of lists, maps and objects #22269
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lookup() can already handle aribtrary objects of (whatever) and should handle maps of (whatever) similarly.
types match or can be converted.
lang/funcs/collection.go
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| if len(args) == 3 { | ||
| _, err = convert.Convert(args[2], ty.ElementType()) | ||
| if err != nil { | ||
| return cty.NilType, function.NewArgErrorf(0, "the default value and map elements must have the same type") |
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The 0 here indicates that the problem is with the zeroth argument; perhaps it would be clearer to indicate 2 so that Terraform will indicate the default value as the subject of the error when it prints out diagnostics, as a subtle additional indication that it's probably the default value that ought to change to match the map, rather than the other way around.
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Looking good, thanks! I left some minor notes inline. |
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lookup() can already handle arbitrary objects of (whatever) and should
handle maps of (whatever) similarly.
The documentation does not mention any limitation to the types returned, which was inconsistent with the error message when a map of objects, lists or maps was used.
Fixes #22267