fix: NoneType error resulting from constraints being added to an exis…

[DanCardin]

…ting view with no other changes.

[coveralls]

Pull Request Test Coverage Report for Build 4502438519

• 3 of 3 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 96.783%

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Totals
Change from base Build 4493883606:	0%
Covered Lines:	1677
Relevant Lines:	1731

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💛 - Coveralls