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Question by vyndor · Jul 15, 2014 at 02:07 PM · editorcompilation

Check if public field set in editor at compilation

Can I add functionality similar to [[RequireComponent]][1] to my public fields? So if public variable not set it cause compilation error.

Thanks!

[1]: http://docs.unity3d.com/ScriptReference/RequireComponent.html

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Answer by _dns_ · Jul 15, 2014 at 02:38 PM

Hi, I don't think you can do that at compile time but here is how I would do it: You can use the OnValidate callback: http://docs.unity3d.com/ScriptReference/MonoBehaviour.OnValidate.html

In the OnValidate function, you can check the value of a field or use GetComponent to check if a component is present. In case of error, you can warn the user with a LogError.

OnValidate is called in the editor any time a value is changed or when the object/scene is loaded or reloaded (after each re-compilation for example) so it's very convenient for this kind of check.

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avatar image vyndor · Jul 16, 2014 at 06:29 AM 0
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Thank you, OnValidate() seems to be a more convinient way than check in the Strart() method.

avatar image sandygk · Sep 15, 2015 at 03:39 PM 0
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And OnValidate is called in the editor only which could be a plus

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Answer by ViIIain · Jul 15, 2014 at 02:09 PM

Check if it is not null in Start() method

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avatar image vyndor · Jul 15, 2014 at 02:13 PM 0
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I can do it in Start() and write to the LogError about it or smth similar, but I want to make check at compilation stage. Is it possible?

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