What is ?ngModel?

Question

When creating a directive in angular I believe you can use require: '^ngModel' to look back to a parent directive's model. However, does require: '?ngModel' look for the first model in the current directive?

Answer 1

The required name can be prefixed with:

? – Don't raise an error if the controller isn't found
^ – Look for the controller on parent elements, not just on the local scope

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