Apply a directive conditionally

Question

I am using Material 2 to add md-raised-button. I want to apply this directive only if certain condition becomes true.

For example:

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Answer 1

Currently, there is NO way to conditionally apply a directive to a component.This is not supported.The components which you have created can be added or removed conditionally.

There is already an issue created for the same with angular2, so it should be the case with angular4 aswell.

Alternatively you can go for the option with ng-if