$countSameSpace

Counts how many other Spaces in the model share the same Space Number, and also returns their names. An extended variant of $countSameRooms that provides additional context for the error message.

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Definition

$countSameSpace := function($spaceNumber, $spaceId){
  {
    "count":       $count($spaces[values.number = $spaceNumber and id != $spaceId]),
    "otherSpaces": $spaces[values.number = $spaceNumber and id != $spaceId].name
  }
};

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Dependencies

Requires $spaces in the outer scope:

$spaces := $[type = "Space"];

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Parameters

Parameter	Type	Description
$spaceNumber	string/number	The number of the space being checked
$spaceId	number	The id of the space being checked — excluded so a space does not count itself

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Return value

{
  "count": 2,
  "otherSpaces": ["Space 1.01 A", "Space 1.01 B"]
}

count is 0 when the number is unique. otherSpaces is an empty array in that case.

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Difference from $countSameRooms

$countSameRooms returns only a number. $countSameSpace returns an object with both the count and the names of the conflicting spaces, so the error message can list them explicitly.

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Usage

(
  $spaces := $[type = "Space"];

  $countSameSpace := function($spaceNumber, $spaceId){
    {
      "count":       $count($spaces[values.number = $spaceNumber and id != $spaceId]),
      "otherSpaces": $spaces[values.number = $spaceNumber and id != $spaceId].name
    }
  };

  $[type = "Space"].{
    "id": id,
    "name": name,
    "number": values.number,
    "otherSpaces": $countSameSpace(values.number, id)
  }
)

Validator: otherSpaces.count → int:LessThan 1

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Used in rules

• rule-7806ca49 — Space number is uniek