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`contains` on `null` showing as false

Open Beginner friendly
#54 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
68/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
php
Domain
backend

Research direction

Start by tracing DataObject::contains using the example with the name and empty fields. Confirm that contains checks whether a field exists rather than whether its value is non-null, and verify that the null-valued field returns true while the existing name behavior remains unchanged.

Written by the indexing model from the issue text.

Description

good first issue help wanted
$data = new DataObject()
	->with("name", "Ada")
	->with("empty", null);

var_dump($data->contains("name"));  // true
var_dump($data->contains("empty")); // false

The expectation is that the DataObject does contain a field called empty, even thought its value is null.

Dominant language
PHP
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