Feature Request: List value transformer

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1

Let’s say for example we have the following data:

{
    "apple": "red",
    "pear": "green",
    "orange": "orange",
    "blueberry": "blue",
    "strawberry": "red"
}

I need a transformer that converts a value into another based on the provided list (or return null if not found).

Based on the example data above:

  • If I provide “pear”, I should get “green”.
  • If I provide “strawberry”, I should get “red”.
  • If I provide “pineapple”, I should get null.

The PHP equivalent to this would be:

$value = $data[$parameter] ?? null
2

Hi @w.vannus,

I think JmesPath could do it like this:

image
image478×351 16.1 KB

Could you please confirm if this solves your problem?

3

That’s not exactly what I meant, and perhaps I explained the issue not clear enough.
Let me try to explain it in another way, in the hopes it gets more clear:

I provide the following two variables to the transformer:

  • $list: A static list of key-values, describing the colors for each type of fruit (see the example in original post)
  • $fruit: A string which defines the type of fruit I supply to it. Sometimes, it contains apple, other times pear, etc…

Now, I want the transformer to find the color of the provided fruit from the list, and store it in a variable (for example: fruitColor in your example).

So if I supply it apple, it should return red. If I supply pear it returns green, etc etc. If I supply pineapple, which is not found in the list, it should return null.

PHP function example:

function listValueTransformer(Array $list, String $key)
{
    return $list[$key] ?? null;
}

$list = [
    "apple" => "red",
    "pear" => "green",
    "orange" => "orange",
    "blueberry" => "blue",
    "strawberry" => "red"
];

echo listValueTransformer($list, 'apple'); //Output: 'red'
echo listValueTransformer($list, 'blueberry'); //Output: 'blue'
echo listValueTransformer($list, 'melon'); //Output: null

I hope I explained it clear enough.

Thank you for your response so far!

5

I’m afraid I don’t understand your question clearly. Can you send me the link to the configuration you created via DM?

6

Done, sent you a DM with a link to a sample transformer.

7

Thank you for providing me with the link.
To resolve your problem, you can follow this article: