My unique directive handles validation by the directive attribute value.
For example:
<input type="text" ng-my-validate="onlyletters" />I am looking to dynamically change the value from onlyletters to onlynumbers, and I want the directive to adjust its validation behavior accordingly.
Any ideas on how to accomplish this?
It is recommended to utilize the attribute $observers.
UPDATE: @MatthewGreen has pointed out a crucial detail I missed. If you are not using an interpolated value, consider implementing a $watcher with plain jQuery attribute reading:
angular.module('mod', [])
.directive('ngMyValidate', function() {
return {
link: function(scope, elm, attr) {
scope.$watch(function() {
return elm.attr('ng-my-validate');
}, function(value) {
console.log('attribute changed:', value);
});
}
};
});
Big thanks to @MatthewGreen!
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