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Why custom filter is not running in angular?

Below is my custom filter.
app.filter('inputFilter', function () {
return function (str) {
var output;
if (str != "" && str != null && isNaN(str)) {
output = str.trim().toLowerCase();
return output;
}
else {
return str;
}
}
HTML
<form method="post" name="loginForm" class="form-group" novalidate>
<input type="email" name="username" ng-model="user.username" class="form-control" placeholder="Your email address" required />
{{ user.username | inputFilter }} <!--this line is just for test purpose-->
<input type="button" class="btn btn-primary" value="Login" ng-click="login(user)" />
</form>
In this real scenario, filter is not executing.
However, when for testing purpose I flip my html as:-
<input type="text" ng-model="username" class="form-control" /> <br/>
{{ username | inputFilter }}
It filters the input string.
My requirement is :
This is login form, so when user submits his username I want to filter the input & then pass to controller (I agree there are more simple way to do but I want to do it using filter)
How do I run filter for my requirement.

When you using type="email" in the input field , if only email is valid then the value gonna assign to ng-model variable. That's why only for valid email filter would work.
if type="text" then for every character you type model gonna change and filter will get executed
angular.module("app",[])
.controller("ctrl",function($scope){
$scope.user = {};
})
.filter('inputFilter', function () {
return function (str) {
var output;
if (str != "" && str != null && isNaN(str)) {
output = str.trim().toLowerCase();
return output;
}
else {
return str;
}
}
})
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
<form method="post" name="loginForm" class="form-group" novalidate>
<input type="email" name="username" ng-model="user.username" class="form-control" placeholder="Your email address" required />
{{ user.username | inputFilter }}
<input type="button" class="btn btn-primary" value="Login" ng-click="login(user)" />
</form>
</div>

There is nothing wrong with your filter.
The reason you thought your filter is not working is because you've used input type="email" in which ng-model will only update when the value is valid.
and in testing case it is working because you've used type="text" which will automatically updates.
See the demo.
angular.module('myApp', []);
angular
.module('myApp')
.controller('MyController', MyController)
.filter('inputFilter', inputFilter);
MyController.$inject = ['$scope'];
function MyController($scope) {
$scope.login = function(usr) {
alert(usr);
};
$scope.user = {
username: 'ABC#xyz.com',
name: 'ANYthing'
};
}
function inputFilter() {
return function(str) {
var output;
if (str != "" && str != null && isNaN(str)) {
output = str.trim().toLowerCase();
return output;
} else {
return str;
}
}
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<div ng-app="myApp" ng-controller="MyController">
<form method="post" name="loginForm" class="form-group" novalidate>
<div style="border:1px solid"><input type="email" name="username" ng-model="user.username" class="form-control" placeholder="Your email address" required />
<p>email:</p>
<p>value: {{ user.username }}</p>
<p>filter: {{ user.username | inputFilter }}</p>
</div>
<div style="border:1px solid">
<input type="text" name="name" ng-model="user.name" class="form-control" placeholder="Your email address" required />
<p>text:</p>
<p>value: {{ user.name }}</p>
<p>filter: {{ user.name | inputFilter }}</p>
</div>
<!--this line is just for test purpose-->
<input type="button" class="btn btn-primary" value="Login" ng-click="login(user)" />
</form>
</div>

In angular form span can not be displayed

I am not able to see error message on clicking the submit button using angularjs.
Any lead will be appreciated
Thanks in advance :)
<form id="formbody" ng-submit="submituser(form)" name="form" novalidate>
<input type="text" ng-class="{ errorinput: submitted && form.dob.$invalid }" name="dob" ng-model="dob" placeholder="Date of Birth" required />
<span class="e" ng-show="submitted && form.dob.$invalid">Please provide a valid date of birth</span>
<div style="padding-left: 275px;">
<button type="submit">Submit</button>
<!-- <div type="button" id="btn" style="color: red;" >Submit</div> -->
</div>
</div>
</form>
.controller('ExampleController', function($scope, $location, $scope, $stateParams) {
$scope.singleSelect = '';
$scope.goToPage = function() {
console.log("selectservice");
$location.path("/selectservice");
}
$scope.submituser = function($scope) {
if ($scope.form.$valid) {} else {
$scope.submitted = true;
}
}
})

change ng-show of span to
<span class="e" ng-show="submitted && form.dob.$invalid">Please provide a valid date of birth</span>

please check the form name
you have used two different names
name ="form" in form tag and used as signUpForm.dob in input field.
Check your ng-model to
<form id="formbody" ng-submit="submituser(form)" name="signUpForm" novalidate>
<input type="text" ng-class="{ errorinput: submitted && signUpForm.dob.$invalid }" name="dob" ng-model="form.dob" placeholder="Date of Birth" required />
<span class="e" ng-if="submitted && signUpForm.dob.$invalid">Please provide a valid date of birth</span>
<div style="padding-left: 275px;">
<button type="submit">Submit</button>
</div>
</div>
</form>
.controller('ExampleController',function($scope,$location,$scope, $stateParams){
$scope.singleSelect='';
$scope.goToPage=function(){
console.log("selectservice");
$location.path("/selectservice");
}
$scope.submitted =false;
$scope.submituser = function(form){
// console.log(form);
if (form.$valid) {
your logic
} else {
$scope.submitted = true;
}
}
})

Try something like that
<link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form name="form" ng-app>
<div class="control-group" ng-class="{true: 'error'}[submitted && form.dob.$invalid]">
<label class="control-label" for="dob">Your Date of Birth</label>
<div class="controls">
<input type="text" name="dob" ng-model="dob" required />
<span class="help-inline" ng-show="submitted && form.dob.$invalid">Please provide a valid date of birth</span>
</div>
</div>
<button type="submit" class="btn btn-primary btn-large" ng-click="submitted=true">Submit</button>
</form>

You have to provide the form name but even after that you cannot refer to your form in controller unless you pass it through the submit function arguments. Also there is not signupForm() function in your controller.
The way to go is :
<form id="formbody" name="myForm" ng-submit="signupForm(myForm)" novalidate>
<!-- inputs etc -->
</form>
Then based on submituser():
$scope.signupForm = function(myForm) {
//Do whatever you want to do
if(myForm.$valid) {
//some logic
}else {
$scope.submitted = true;
}
}
On the other hand if you don't want to mess up with the controller you can always use FormController method $submitted. This would look like:
<span class="e" ng-show="myForm.$submitted && myForm.dob.$invalid">Please provide a valid date of birth</span>

ng-form inside ng-repeat with submit button outside of ng-repeat

I've this code:
<div class="row" ng-repeat="input in inputs | filter:inputNumber">
<ng-form name="form1">
<div class="col-xs-3">
<div class="form-group">
<input ng-model="inputs.number[$index]" type="number" name="number$index" class="form-control" placeholder="" min="1" max="9999" required />
<small class="label label-danger" data-ng-show="submitted && form1.number$index.$error.required">required</small>
<small class="label label-danger" data-ng-show="submitted && form1.number$index.$error.number">number</small>
<small class="label label-danger" data-ng-show="submitted && form1.number$index.$error.max">number max</small>
</div>
</div>
</ng-form>
</div>
<button data-ng-click="add(form1)" class="btn-add" style="padding-left: 40%;"></button>
Controller:
// Form add handler.
$scope.add = function(form) {
// Trigger validation flag.
$scope.submitted = true;
// If form is invalid, return and let AngularJS show validation errors.
if (form.$invalid) {
console.log('invalid');
return;
} else {
var newItemNo = $scope.inputs.length + 1;
var inputs = { 'id': 'input' + newItemNo }
$scope.inputs.push(inputs);
$scope.isDisabled = false;
}
};
The problem is I can only validate the form inputs inside ng-repeat and ng-form, and I need to trigger the event outside of that html block, maybe I'm just being noob (first time using angular1 validations). I will appreciate some help. Thanks in advance.

Based on you comment and following the same goal of generating a form for each element in your ng-repeat, this should be the answer:
html
<form name="generalForm"> <!-- this form will be valid if all sub-forms are valid-->
<div class="row" ng-repeat="input in inputs | filter:inputNumber">
<ng-form name="form1">
<div class="col-xs-3">
<div class="form-group">
<input ng-model="inputs.number[$index]" type="number" name="number$index" class="form-control" placeholder="" min="1" max="9999" required />
<small class="label label-danger" data-ng-show="submitted && form1.number$index.$error.required">required</small>
<small class="label label-danger" data-ng-show="submitted && form1.number$index.$error.number">number</small>
<small class="label label-danger" data-ng-show="submitted && form1.number$index.$error.max">number max</small>
</div>
</div>
</ng-form>
</div>
<button data-ng-click="add(generalForm)" class="btn-add" style="padding-left: 40%;"></button>
</form>
controller
// Form add handler.
$scope.add = function(form) {
// Trigger validation flag.
$scope.submitted = true;
// If form is invalid, return and let AngularJS show validation errors.
if (form.$invalid) {
console.log('invalid');
return;
} else {
var newItemNo = $scope.inputs.length + 1;
var inputs = { 'id': 'input' + newItemNo }
$scope.inputs.push(inputs);
$scope.isDisabled = false;
}
};

Angular: Ng-show only while off Input Field in Form

https://jsfiddle.net/jzhang172/xu93yubL/
The particular issue is in my E-mail input field.
Is it possible to only display the ng-show message after the field is validated and when the user is not inside the input field?
In other words, I want the ng-show message to disappear if the user is on the input field.
I've tried a number of combinations of logic and haven't been able to get it to work:
(function(angular) {
'use strict';
angular.module('formExample', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.master = {};
$scope.update = function(user) {
$scope.master = angular.copy(user);
};
$scope.reset = function(form) {
if (form) {
form.$setPristine();
form.$setUntouched();
}
$scope.user = angular.copy($scope.master);
};
$scope.reset();
}]);
})(window.angular);
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
<body ng-app="formExample">
<div ng-controller="ExampleController">
<form name="form" class="css-form" novalidate>
Name:
<input type="text" ng-model="user.name" name="uName" required="" />
<br />
<div ng-show="form.$submitted || form.uName.$touched">
<div ng-show="form.uName.$error.required">Tell us your name.</div>
</div>
E-mail:
<input type="email" ng-model="user.email" name="uEmail" required="" />
<br />
<div ng-show="form.$submitted || form.uEmail.$touched">
<span ng-show="form.uEmail.$error.required" style="background:red;">Tell us your email.</span>
<span ng-show="form.uEmail.$error.email"style="background:red;">This is not a valid email.</span>
</div>
</form>
</div>
</body>

You can use ngFocus and ngBlur directives to achieve desired result...
Just set some variable false on ngFocus and set true with ngBlur and add that variable into your ngShow condition...
<input type="email" ng-model="user.email" name="uEmail" required="" ng-focus="showEmailValidationMsg = false;" ng-blur="showEmailValidationMsg = true;"/>
<br />
<div ng-show="(form.$submitted || form.uEmail.$touched) && showEmailValidationMsg">
<span ng-show="form.uEmail.$error.required" style="background:red;">Tell us your email.</span>
<span ng-show="form.uEmail.$error.email"style="background:red;">This is not a valid email.</span>
</div>
and here is working JSFIDDLE...

get input value after angularjs form validation

Hello everybody I'm quite new to Angularjs and Bootstrap. Now I have made login form using Angularjs and Bootstrap css.
The below is my form
<form name="userForm" ng-submit="submitForm(userForm.$valid)" novalidate>
<!-- USERNAME -->
<div class="form-group" ng-class="{ 'has-error' : userForm.username.$invalid && !userForm.username.$pristine }">
<label>Username</label>
<input type="text" id="name" name="username" class="form-control" ng-model="user.username" ng-minlength="3" ng-maxlength="8">
<p ng-show="userForm.username.$error.minlength" class="help-block">Username is too short.</p>
<p ng-show="userForm.username.$error.maxlength" class="help-block">Username is too long.</p>
</div>
<!-- EMAIL -->
<div class="form-group" ng-class="{ 'has-error' : userForm.email.$invalid && !userForm.email.$pristine }">
<label>Email</label>
<input type="email" id="email" name="email" class="form-control" ng-model="user.email">
<p ng-show="userForm.email.$invalid && !userForm.email.$pristine" class="help-block">Enter a valid email.</p>
</div>
<!-- PASSWORD -->
<div class="form-group" ng-class="{ 'has-error' : userForm.name.$invalid && !userForm.name.$pristine }">
<label>Password</label>
<input type="password" id="pass" name="pass" class="form-control" ng-model="user.pass" ng-minlength="3" required>
<p ng-show="userForm.pass.$invalid && !userForm.pass.$pristine" class="help-block">Your pass is required.</p>
</div>
<button id="signIn_1" type="submit" class="btn btn-block signin">Submit</button>
</form>
and my app script is as
script>
// create angular app
var validationApp = angular.module('validationApp', []);
// create angular controller
validationApp.controller('mainController', function($scope) {
$scope.email = "fsdg#sdf.com";
$scope.password = "1234";
// function to submit the form after all validation has occurred
$scope.submitForm = function(isValid) {
// check to make sure the form is completely valid
if (isValid) {
};
});
</script>
Now my problem is how can i get above form input values after validation in angular app and send them to Codeigniter controller for authenticate.
Thanks in advance.

first declare
$scope.user={} in validation controller
In user object all value is available to you when user type because of ng-model
validationApp.controller('mainController', function($scope) {
$scope.email = "fsdg#sdf.com";
$scope.password = "1234";
$scope.user={};//Add this thing
// function to submit the form after all validation has occurred
$scope.submitForm = function(isValid) {
// check to make sure the form is completely valid
if (isValid) {
$http.post('index.php',$scope.user).success(function(response){
});
};
});
// At server end
// Remember one thing $http send data in json format.So decode it by json_decode