Can not access ng-model values inside controller [angularJS] - angularjs

Question

When I try to access user.firstname value in controller, it gives the following error.
TypeError: Cannot read property 'firstname' of undefined
$scope.signUpCustomer = function(){
console.log("GGGGGGGGGGGGGGGGGGGGGGGGG ", $scope.user.firstname);
}
<form class="form-horizontal font-hp-simplified signUpUserForm row" role="form" ng-submit="signUpCustomer()" name ="signUpUserForm" ng-show="!userVendor">
<div class="col-md-12">
<div class="col-md-6">
<div class="form-group">
<label for="firstname" class="col-md-12">First Name:</label>
<div class="col-md-12">
<input ng-model="user.firstname" type="text" class="form-control" name="firstname" required />
<span class="text-danger" ng-show="signUpUserForm.firstname.$invalid && signUpUserForm.firstname.$dirty ">First name is required</span>
</div>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="lastname" class="col-md-12">Last Name:</label>
<div class="col-md-12">
<input ng-model="user.lastname" type="text" class="form-control" name="lastname" required />
<span class="text-danger" ng-show="signUpUserForm.lastname.$invalid && signUpUserForm.lastname.$dirty ">Last name is required</span>
</div>
</div>
</div>
</div>
<div class="col-md-12">
<div class="col-md-6">
<div class="form-group">
<label for="email" class="col-md-12">Email:</label>
<div class="col-md-12">
<input ng-model="user.email" type="email" class="form-control" name="email" required />
<span class="text-danger" ng-show="signUpUserForm.email.$error.required && signUpUserForm.email.$dirty ">Email is required</span>
<span class="text-danger" ng-show="signUpUserForm.email.$error.email && signUpUserForm.email.$dirty ">Please enter valid email</span>
</div>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="password" class="col-md-12">Password:</label>
<div class="col-md-12">
<input ng-model="user.password" type="password" class="form-control" name="password" required />
<span class="text-danger" ng-show="signUpUserForm.password.$invalid && signUpUserForm.password.$dirty">Password is required</span>
</div>
</div>
</div>
</div>
<div class="col-md-12">
<div class="col-md-6">
<div class="form-group">
<label for="phone" class="col-md-12">Phone:</label>
<div class="col-md-12">
<input ng-model="user.phone" type="text" class="form-control" name="phone" required />
<span class="text-danger" ng-show="signUpUserForm.phone.$invalid && signUpUserForm.phone.$dirty">Phone is required</span>
</div>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="country" class="col-md-12">Country:</label>
<div class="col-md-12">
<select name="country" ng-model="user.country" type="text" class="form-control form-bg-white" required>
<!-- <option value="" disabled selected>Select Your Country</option> -->
<option value="" disabled selected></option>
<option ng-repeat="country in countries" value="{{country}}">{{country}}</option>
</select>
<span class="text-danger" ng-show="signUpUserForm.country.$invalid && signUpUserForm.country.$dirty">Country is required</span>
</div>
</div>
</div>
</div>
<div class="col-md-12">
<div class="col-md-12">
<!-- Button -->
<div class="form-group">
<div class="col-md-12">
<div class="icon-user-signup">
<div class="input-group-addon">
<i class="fa fa-user"></i>
</div>
<button id="btn-signup" class="btn btn-primary col-md-12">SIGN UP</button>
</div>
</div>
<!-- <div class="mrg-top-10 col-md-12 text-right">
<h4><a ng-click="go('/seller#/signup')" class="ven-link">
Become a vendor today
</a></h4>
</div>-->
</div>
</div>
</div>
<!-- <div class="col-md-12 control">
<div class="signup-border" >
Already have an account ?
<a ui-sref="loginUser" >
Sign In Here
</a>
</div>
</div> -->
</form>

Answer 1

You need to initialize the $scope.customer first in controller
$scope.user = {};