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Knockout JS How to Access a Value from Second View Model / Binding

I am new to Knockout JS and think it is great. The documentation is great but I cannot seem to use it to solve my current problem.
The Summary of my Code
I have two viewmodels represented by two js scripts. They are unified in a parent js file. The save button's event is outside
both foreach binders. I can save all data in the details foreach.
My Problem
I need to be able to include the value from the contacts foreach binder with the values from the details foreach binder.
What I have tried
I have tried accessig the data from both viewmodels from the parent viewmodel and sending the POST request to the controller from there but the observeableArrays show undefined.
Create.CSHTML (Using MVC5 no razor)
<div id="container1" data-bind="foreach: contacts">
<input type="text" data-bind="value: contactname" />
</div>
<div data-bind="foreach: details" class="card-body">
<input type="text" data-bind="value: itemValue" />
</div>
The save is outside of both foreach binders
<div class="card-footer">
<button type="button" data-bind="click: $root.save" class="btn
btn-success">Send Notification</button>
</div>
<script src="~/Scripts/ViewScripts/ParentVM.js" type="text/javascript"></script>
<script src="~/Scripts/ViewScripts/ViewModel1.js" type="text/javascript"></script>
<script src="~/Scripts/ViewScripts/ViewModel2.js" type="text/javascript"></script>
ViewModel1
var ViewModel1 = function (contacts) {
var self = this;
self.contacts = ko.observableArray(ko.utils.arrayMap(contacts, function (contact) {
return {
contactName: contact.contactName
};
}));
}
ViewModel2
var ViewModel2 = function (details) {
var self = this;
self.details = ko.observableArray(ko.utils.arrayMap(details, function (detail) {
return {
itemNumber: detail.itemValue
};
}));
}
self.save = function () {
$.ajax({
url: baseURI,
type: "POST",
data: ko.toJSON(self.details),
dataType: "json",
contentType: "application/json",
success: function (data) {
console.log(data);
window.location.href = "/Home/Create/";
},
error: function (error) {
console.log(error);
window.location.href = "/Homel/Create/";
}
});
};
ParentViewModel
var VM1;
var VM2;
var initialContactInfo = [
{
contactPhone: ""
}
]
var initialForm = [
{
itemValue: ""
]
}
$(document).ready(function () {
if ($.isEmptyObject(VM1)) {
ArnMasterData = new ViewModel1(initialContactInfo);
ko.applyBindings(VM1, document.getElementById("container1"));
}
if ($.isEmptyObject(VM2)) {
VM2 = new ViewModel2(initialForm);
ko.applyBindings(VM2, document.getElementById("container2"));
}
});

How to display the information from the input box

I am trying to learn how to work with angular and javascript more. Please let me know what I am doing wrong here.
When I input something into the text box, it should display
"hello {name} , would you like to play a game?
It displays the string without the input.
Also, when I run it, it says
object Object
.
(function (app) {
var JakesController = function ($scope, $http) {
$scope.JakesSampleModel = {name: ' '};
$scope.theSampleReturn = null;
var sendResponseData = function (response) {
if (response.data.error) {
console.log(data);
}
else {
$scope.theSampleReturn = response.data;
}
};
var sendResponseError = function (data) {
console.log(data);
}
$scope.senddata = function (params) {
return $http({
method: 'post',
url: '/home/servercall',
data: params
})
.then(sendResponseData)
.catch(sendResponseError);
};
};
app.controller("JakesController",['$scope', '$http', JakesController]);
}(angular.module("JakesFirstApp")));
Here is the HTML:
<div id="OutterDiv" ng-controller="JakesController" ng-app="JakesFirstApp">
<div id="JakesButton" class="button" ng-click="senddata()">Submit</div>
<input type="text" id="JakesTextBox" ng-model="theSampleReturn" />
{{theSampleReturn.result}}
Json result:
public JsonResult servercall(string name)
{
return Json(new { result = $"Hello {name}, Would you like to play a game?" }, JsonRequestBehavior.AllowGet);
}

In your html try to use {{theSampleReturn}} instead of {{theSampleReturn.result}} because you don't seem to have theSampleReturn.result set anywhere

If I understand you question correctly, then it looks like the solution is to update your template like so:
<input type="text" id="JakesTextBox" ng-model="JakesSampleModel.name" />
And then update your controller to correctly send the name to the server when senddata() is called:
$scope.senddata = function () {
// Construct params for post by getting data from your scope/model that's
// wired up to your input field
var params = { name : $scope.JakesSampleModel.name };
return $http({
method: 'post',
url: '/home/servercall',
data: params
})
.then(sendResponseData)
.catch(sendResponseError);
};

Event default not triggering in jQuery module

I'm attempting to write a jQuery script to store an authentication token from a REST API service. I had a block of working code but decided to modularize to make the application more scalable. Now, it seems that the preventDefault portion is no longer working.
<form action="/" id="authorize">
<label for="username">Username:</label><br />
<input type="text" id="username" required /><br />
<label for="password">Password:</label><br />
<input type="password" id="password" required /><br />
<input type="submit" value="Authorize" /><span id="isValid" class="checkContainer"> </span>
</form><hr />
<label for="serviceType" class="fieldDisabled">Method: </label>
<select id="serviceType" disabled>
<option></option>
<option value="option1">Option 1</option>
<option value="option2">Option 2</option>
</select>
The script is saved separately as authorize.js and invoked in the module as follows:
<script src="js/authorize.js"></script>
<script>
$(document).ready(function() {
Authorize.init();
});
</script>
Here's the module itself:
var s;
var Authorize = {
token: null,
settings: {
username: $("#username"),
password: $("#password"),
form: $("#authorize"),
validationIcon: $("#isValid"),
selector: $("#serviceType"),
selectorLabel: $("label[for='serviceType']"),
serviceSelector: $(".methodFieldDisabled"),
url: "redacted"
},
init: function() {
s = Authorize.settings;
this.bindUIActions();
},
bindUIActions: function() {
s.form.submit(function(event) {
event.preventDefault();
data = Authorize.buildJSON(s.username.val(), s.password.val());
Authorize.getToken(json);
});
},
buildJSON: function(username, password) {
var data = {};
data['grant_type'] = password;
data['username'] = username;
data['password'] = password;
return data;
},
getToken: function(data) {
$.ajax({
type: "POST",
url: s.url,
data: data,
success: function(json) {
Authorize.success(json);
},
error: function(json) {
Authorize.error(json);
}
});
},
success: function(json) {
Authorize.token = json.accessToken;
Authorize.revealServiceSelector();
},
error: function(json) {
Authorize.hideServiceSelector();
},
revealServiceSelector: function() {
s.serviceSelector.hide();
if(s.validationIcon.hasClass("invalid")) {
s.validationIcon.removeClass("invalid");
}
selectorLabel.removeClass("fieldDisabled");
selector.prop("disabled", false);
s.validationIcon.addClass("valid");
},
hideServiceSelector: function() {
s.serviceSelector.hide();
if(s.validationIcon.hasClass("valid")) {
s.validationIcon.removeClass("valid");
}
selectorLabel.addClass("fieldDisabled");
selector.prop("disabled", "disabled");
s.validationIcon.addClass("invalid");
}
};
I've been toiling over this for about a day now and can't seem to locate the point of failure. When the form is submitted, it redirects to the root directory of the server instead of executing the script as intended.

Just a few typos which stopped the code in its tracks. The submission was the default behavior as your code failed to complete.
Use a debugger to see the errors at runtime (get to know and love your F12 debugging tools in Chrome etc!):
1) You have the wrong variable (json instead of data) on the line below so you get an error:
bindUIActions: function () {
s.form.submit(function (event) {
event.preventDefault();
data = Authorize.buildJSON(s.username.val(), s.password.val());
Authorize.getToken(data); // <<<<<<<<<<<<<<<<<<<<<<<
});
2) You also failed to put your scope (s) on a couple of variables:
revealServiceSelector: function () {
s.serviceSelector.hide();
if (s.validationIcon.hasClass("invalid")) {
s.validationIcon.removeClass("invalid");
}
s.selectorLabel.removeClass("fieldDisabled");
s.selector.prop("disabled", false);
s.validationIcon.addClass("valid");
},
hideServiceSelector: function () {
s.serviceSelector.hide();
if (s.validationIcon.hasClass("valid")) {
s.validationIcon.removeClass("valid");
}
s.selectorLabel.addClass("fieldDisabled");
s.selector.prop("disabled", "disabled");
s.validationIcon.addClass("invalid");
}

Your from action is pointed to "\" which is the root of your directory. Instead point it to the file that contains the code you want to fire.

ng-click is not firing with factory class

I'm new in AngularJS. The following code is not executing after entering the username and password and clicking the login button. The login should execute the login method and populate person data binding object. Anybody knows why is not firing? Thanks.
Factory File
'use strict';
var usermodule = angular.module('retrieveBasicUserInfo', [])
.factory('basicUserInfo', function($http) {
var credentials = {
username: '',
password: ''
};
var person = "";
$http.defaults.useXDomain = true;
var getBasicUserInfo = function (credentials) {
var inputdata = { "Logon": credentials.username, "Pass": credentials.password};
$http.post('http://localhost:23034/api/wmsusers/login',JSON.stringify(inputdata),
{
headers: {
'Access-Control-Allow-Origin' : '*',
'Access-Control-Allow-Methods' : 'POST, GET, OPTIONS, PUT',
'Content-Type': 'application/json',
'Accept': 'application/json'
}
}).success(function (inputdata) {
person = inputdata[0];
});
};
return {
person: getBasicUserInfo
};
});
JavaScript File
'use strict';
var usermodule = angular.module('wms', ['retrieveBasicUserInfo'])
.controller('userAuthentication', ['basicUserInfo', function ($scope, basicUserInfo) {
$scope.credentials = {
username: '',
password: ''
};
$scope.login = function (credentials) {
console.log(credentials)
$scope.person = basicUserInfo.getBasicUserInfo(credentials);
}
}]);
HTML File
<div data-ng-controller="userAuthentication">
<div class="login-panel">
<p>Please complete the following form and click Login to continue:</p>
<form name="loginForm" data-ng-submit="login(credentials)" novalidate>
<label for="username">Username:</label>
<input type="text" id="username"
data-ng-model="credentials.username">
<label for="password">Password:</label>
<input type="password" id="password"
data-ng-model="credentials.password">
<button type="submit">Login</button>
</form>
</div>
<br>
<ul data-ng-model="$parent.person">
<li>Name: {{person.Name}}</li>
<li>Associate Id: {{person.Empid}}</li>
<li>Access Level: {{person.Access}}</li>
</ul>

Please see here http://jsbin.com/vaweja/2/edit.
Your factory returns object with person property and in your controller you are trying to reach getBasicUserInfo so chnage person to getBasicUserInfo. And you missed $scope in your controller definition
change that
return {
person: getBasicUserInfo
};
to
return {
getBasicUserInfo: getBasicUserInfo
};
and
var usermodule = angular.module('wms', ['retrieveBasicUserInfo'])
//and you missed $scope in line bellow after bracket
.controller('userAuthentication', ['$scope','basicUserInfo', function ($scope, basicUserInfo) {
$scope.credentials = {
username: '',
password: ''
};
$scope.login = function (credentials) {
console.log(credentials)
$scope.person = basicUserInfo.getBasicUserInfo(credentials);
}
}])
;

Angularjs how to upload multipart form data and a file?

I'm a beginner to angular.js but I have a good grasp of the basics.
What I am looking to do is upload a file and some form data as multipart form data. I read that this isn't a feature of angular, however 3rd party libraries can get this done. I've cloned angular-file-upload via git, however I am still unable to post a simple form and a file.
Can someone please provide an example, html and js of how to do this?

First of all
You don't need any special changes in the structure. I mean: html input tags.
<input accept="image/*" name="file" ng-value="fileToUpload"
value="{{fileToUpload}}" file-model="fileToUpload"
set-file-data="fileToUpload = value;"
type="file" id="my_file" />
1.2 create own directive,
.directive("fileModel",function() {
return {
restrict: 'EA',
scope: {
setFileData: "&"
},
link: function(scope, ele, attrs) {
ele.on('change', function() {
scope.$apply(function() {
var val = ele[0].files[0];
scope.setFileData({ value: val });
});
});
}
}
})
In module with $httpProvider add dependency like ( Accept, Content-Type etc) with multipart/form-data. (Suggestion would be, accept response in json format)
For e.g:
$httpProvider.defaults.headers.post['Accept'] = 'application/json, text/javascript';
$httpProvider.defaults.headers.post['Content-Type'] = 'multipart/form-data; charset=utf-8';
Then create separate function in controller to handle form submit call.
like for e.g below code:
In service function handle "responseType" param purposely so that server should not throw "byteerror".
transformRequest, to modify request format with attached identity.
withCredentials : false, for HTTP authentication information.
in controller:
// code this accordingly, so that your file object
// will be picked up in service call below.
fileUpload.uploadFileToUrl(file);
in service:
.service('fileUpload', ['$http', 'ajaxService',
function($http, ajaxService) {
this.uploadFileToUrl = function(data) {
var data = {}; //file object
var fd = new FormData();
fd.append('file', data.file);
$http.post("endpoint server path to whom sending file", fd, {
withCredentials: false,
headers: {
'Content-Type': undefined
},
transformRequest: angular.identity,
params: {
fd
},
responseType: "arraybuffer"
})
.then(function(response) {
var data = response.data;
var status = response.status;
console.log(data);
if (status == 200 || status == 202) //do whatever in success
else // handle error in else if needed
})
.catch(function(error) {
console.log(error.status);
// handle else calls
});
}
}
}])
<script src="//unpkg.com/angular/angular.js"></script>

This is pretty must just a copy of that projects demo page and shows uploading a single file on form submit with upload progress.
(function (angular) {
'use strict';
angular.module('uploadModule', [])
.controller('uploadCtrl', [
'$scope',
'$upload',
function ($scope, $upload) {
$scope.model = {};
$scope.selectedFile = [];
$scope.uploadProgress = 0;
$scope.uploadFile = function () {
var file = $scope.selectedFile[0];
$scope.upload = $upload.upload({
url: 'api/upload',
method: 'POST',
data: angular.toJson($scope.model),
file: file
}).progress(function (evt) {
$scope.uploadProgress = parseInt(100.0 * evt.loaded / evt.total, 10);
}).success(function (data) {
//do something
});
};
$scope.onFileSelect = function ($files) {
$scope.uploadProgress = 0;
$scope.selectedFile = $files;
};
}
])
.directive('progressBar', [
function () {
return {
link: function ($scope, el, attrs) {
$scope.$watch(attrs.progressBar, function (newValue) {
el.css('width', newValue.toString() + '%');
});
}
};
}
]);
}(angular));
HTML
<form ng-submit="uploadFile()">
<div class="row">
<div class="col-md-12">
<input type="text" ng-model="model.fileDescription" />
<input type="number" ng-model="model.rating" />
<input type="checkbox" ng-model="model.isAGoodFile" />
<input type="file" ng-file-select="onFileSelect($files)">
<div class="progress" style="margin-top: 20px;">
<div class="progress-bar" progress-bar="uploadProgress" role="progressbar">
<span ng-bind="uploadProgress"></span>
<span>%</span>
</div>
</div>
<button button type="submit" class="btn btn-default btn-lg">
<i class="fa fa-cloud-upload"></i>
<span>Upload File</span>
</button>
</div>
</div>
</form>
EDIT: Added passing a model up to the server in the file post.
The form data in the input elements would be sent in the data property of the post and be available as normal form values.

It is more efficient to send the files directly.
The base64 encoding of Content-Type: multipart/form-data adds an extra 33% overhead. If the server supports it, it is more efficient to send the files directly:
Doing Multiple $http.post Requests Directly from a FileList
$scope.upload = function(url, fileList) {
var config = {
headers: { 'Content-Type': undefined },
transformResponse: angular.identity
};
var promises = fileList.map(function(file) {
return $http.post(url, file, config);
});
return $q.all(promises);
};
When sending a POST with a File object, it is important to set 'Content-Type': undefined. The XHR send method will then detect the File object and automatically set the content type.
Working Demo of "select-ng-files" Directive that Works with ng-model1
The <input type=file> element does not by default work with the ng-model directive. It needs a custom directive:
angular.module("app",[]);
angular.module("app").directive("selectNgFiles", function() {
return {
require: "ngModel",
link: function postLink(scope,elem,attrs,ngModel) {
elem.on("change", function(e) {
var files = elem[0].files;
ngModel.$setViewValue(files);
})
}
}
});
<script src="//unpkg.com/angular/angular.js"></script>
<body ng-app="app">
<h1>AngularJS Input `type=file` Demo</h1>
<input type="file" select-ng-files ng-model="fileList" multiple>
<h2>Files</h2>
<div ng-repeat="file in fileList">
{{file.name}}
</div>
</body>

You can check out this method for sending image and form data altogether
<div class="form-group ml-5 mt-4" ng-app="myApp" ng-controller="myCtrl">
<label for="image_name">Image Name:</label>
<input type="text" placeholder="Image name" ng-model="fileName" class="form-control" required>
<br>
<br>
<input id="file_src" type="file" accept="image/jpeg" file-input="files" >
<br>
{{file_name}}
<img class="rounded mt-2 mb-2 " id="prvw_img" width="150" height="100" >
<hr>
<button class="btn btn-info" ng-click="uploadFile()">Upload</button>
<br>
<div ng-show = "IsVisible" class="alert alert-info w-100 shadow mt-2" role="alert">
<strong> {{response_msg}} </strong>
</div>
<div class="alert alert-danger " id="filealert"> <strong> File Size should be less than 4 MB </strong></div>
</div>
Angular JS Code
var app = angular.module("myApp", []);
app.directive("fileInput", function($parse){
return{
link: function($scope, element, attrs){
element.on("change", function(event){
var files = event.target.files;
$parse(attrs.fileInput).assign($scope, element[0].files);
$scope.$apply();
});
}
}
});
app.controller("myCtrl", function($scope, $http){
$scope.IsVisible = false;
$scope.uploadFile = function(){
var form_data = new FormData();
angular.forEach($scope.files, function(file){
form_data.append('file', file); //form file
form_data.append('file_Name',$scope.fileName); //form text data
});
$http.post('upload.php', form_data,
{
//'file_Name':$scope.file_name;
transformRequest: angular.identity,
headers: {'Content-Type': undefined,'Process-Data': false}
}).success(function(response){
$scope.IsVisible = $scope.IsVisible = true;
$scope.response_msg=response;
// alert(response);
// $scope.select();
});
}
});