could you please tell me how to count the number of required field in form in angular js ? In my form there is two required field is present (email, select view).So I want to show 2 in my page .when I fill email .it should show only 1 .But when I select value from select view it should show 0 value.
so I make a directive and try to broadcast count value to controller but it is not giving correct value here is my code http://codepen.io/anon/pen/WGzgdE?editors=1010#anon-login
angular.module('app',[]).directive('requiredCount',function($rootScope){
return {
restrict: 'EA',
require: '^form',
link: {
post: function (scope, elem, attr, ctrls) {// jshint ignore:line
console.log('ctrls.$name', ctrls.$name);
scope.$watch(function () {
if (ctrls.$error.required) {
return ctrls.$error.required;
}
}, function (newValue, oldValue) {
if (newValue && newValue !== oldValue) {
var count = newValue.length;
newValue.forEach(function (item) {
if (item.$error.required) {
// if (item.$valid) {
count--;
// }
}
});
}
});
}
}
};
}).controller('app',function($scope){
$scope.$on('count',function(e,a){
$scope.count =a
})
});
You are missing the name attribute in the form elements and the 'ng-model' attribute on element.
<form name='test' novalidate>
<div class="form-group">
<label for="email">Email address:</label>
<input type="email" class="form-control" ng-model="user.email" id="email" required>
</div>
<div class="form-group">
<label for="pwd">Password:</label>
<input id="pwd" name="pwd" class="form-control"
type="password" ng-model="user.password" required></input>
</div>
<div class="checkbox">
<label><input type="checkbox"> Remember me</label>
</div>
<select name="carlist" class="form-control" ng-model="user.carlist" id="carlist" required>
<option value></option>
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
<button type="submit" class="btn btn-default">Submit</button>
</form>
"test.$error.required.length" would simply display the no of required fields .
required field count {{test.$error.required.length}}
Here is the DEMO - http://codepen.io/anon/pen/jrzZLX?editors=1010#anon-login
you can use form.$error.required.length
<div ng-show="form.$invalid">
Sorry but {{form.$error.required.length}} errors found.
</div>
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