Is it possible to use ng-pattern with a variable

Question

I\'m terrible with regular expressions but I was wondering if it was possible to use ng-pattern with a variable

For example,

ng-pattern=\"/^{{valid         


        

Answer 1

ng-pattern expects a regex expression.

From Angular's documentation about ng-pattern:

Sets pattern validation error key if the value does not match the RegExp pattern expression. Expected value is /regexp/ for inline patterns or regexp for patterns defined as scope expressions.

In other words, you could create a RegExp in the controller:

$scope.pattern = new RegExp(patternFromServer);

and use it:

<input ng-model="foo" ng-pattern="pattern">