I am trying to access an object with form data sent to my controller. However, when I try to access objects I get values of null or 0. I used two methods, the first by serializing and the second by storing names and values in one object. (the code below sends/posts serialized)
Here is my JS...
$("#createUser").click(function() {
//store input values
var inputs = $('#newUserForm :input');
var input = $('#newUserForm :input').serializeArray();
console.log(input);
//if I want just the values in one object
var values = {};
$(inputs).each(function() {
values[this.name] = $(this).val();
});
console.log(values);
if(LiveValidation.massValidate( validObj )){
$.post('./adminPanel/createUser', function(input){
alert('Load was performed.');
//test confirmation box
$("#msgbox").html("Grrrrreat");
//drop down confirmation
$("#msgbox").slideDown();
});
} else {
//test fail box
$("#failbox").html("Fail");
$("#failbox").slideDown();
}
});
In the controller side I try to access data the following way...
$this->input->post("firstName")
where firstName is the name of the field.
Below is an image of the objects passed.
Top being serialized array and the bottom a single object with all the names and values of form...
If you're using jQuery, you can use jQuery's built in serialize/query string functions to get the data from a form: http://api.jquery.com/serialize/
In your case:
var data = $('#newUserForm').serialize(); // is a string like "firstName=jon"
Related
I am running parse server in NodeJS environment with express.
Generally, Parse automatically figures out which data has changed so only “dirty” fields will be sent to the Parse Cloud. So, I don’t need to worry about squashing data that I didn’t intend to update.
But why this following code is saving new data every time instead of updating the existing document data with name "Some Name".
// Parse code
Parse.initialize(keys.parseAppID);
Parse.serverURL = keys.parseServerURL;
var GameScore = Parse.Object.extend("GameScore");
var gameScore = new GameScore();
let data = {
playerName: "Some Name",
score: 2918,
cheatMode: true
};
gameScore.save(data, {
success: (gameScore) => {
// let q = new Parse.Query("GameScore");
// q.get(gameScore.id)
console.log("ID: " + gameScore.id)
},
error: function (gameScore, error) {
// Execute any logic that should take place if the save fails.
// error is a Parse.Error with an error code and message.
alert('Failed to create new object, with error code: ' + error.message);
}
});
// End of Parse code
The problem is that you're executing the query to find which object you want to update, but then you're not using the results when you go to save data.
query.first({ // This will result in just one object returned
success: (result) => {
// Check to make sure a result exists
if (result) {
result.save(data, {
// Rest of code
Note: You're treating playerName as a unique key. If multiple users can have the same playerName attribute, then there will be bugs. You can use id instead which is guaranteed to be unique. If you use id instead, you can utilize Parse.Query.get
Edit:
Since you want to update an existing object, you must specify its id.
var GameScore = Parse.Object.extend("GameScore");
var gameScore = new GameScore();
gameScore.id = "ID"; // This id should be the id of the object you want to update
I have some textboxes generated dynamically through Ajax. I'm using Jackson 1.9.8 to parse json. I can retrieve the values of those dynamic textboxes using jQuery as follows.
var itemsArray=[];
$('input[name="txtChargeSize[]"]').each(function(){
itemsArray[i][2]=$(this).val();
});
This can retrieve each element of the textbox array txtChargeSize[] one by one.
itemsArray is an array which already holds
The value of weightId on the itemsArray[i][0] position,
The value of weight on the itemsArray[i][1] position,
The value of charge on the itemsArray[i][2] position which is the value of the textbox being assigned in the above code.
I need to pass this array to Spring controller class to insert these values into the Oracle database. I'm trying the following.
var i=0;
$('input[name="txtChargeSize[]"]').each(function(){
itemsArray[i][2]=$(this).val();
objectArray[i]=[["weightId",itemsArray[i][0]], ["weight",itemsArray[i][1]], ["charge",itemsArray[i][2]]];
i++;
});
It doesn't work as I expect. I need to pass something like the following.
[["weightId", 1], ["weight", 12.4], ["charge", 15.5]]
so that it can be parsed to java.util.List<Object[]>. I don't have precise knowledge of Javascript to accomplish this. How can I pass in this way the values held by itemsArray to Spring controller using json?
var i=0;
$('input[name="txtChargeSize[]"]').each(function(){
itemsArray[i][2]=$(this).val();
i++;
});
try javascript constructor method like this.
for(var i = 0; i < itemsArray.length; i++) {
objectArray[i]= new createObj(itemsArray[i][0], itemsArray[i][1], itemsArray[i][2]);
}
and the constructor function is
function createObj(weightID, weight, charge) {
this.weightId = weightID;
this.weight = weight;
this.charge = charge;
}
and finally if you want json string then use this
var str = JSON.stringify(objectArray);
alert(str);
I would like to overwrite the value of the "password" field before submiting a form on Jquery using AjaxSubmit function.
I know I can just update the value on the input field but, I don't want the user to see this transformation. In other words, I just want to send a custom value to the password field and keep the current value on the screen...
How could I do that?
My current code:
var loginoptions = {
success: mySuccessFuction,
dataType: 'json'
}
$('#My_login_form').submit(function(e) {
e.preventDefault();
var pass=$("#My_login_form_password").val();
if (pass.length>0){
loginoptions.data={
password: ($.sha1($("#My_login_form_csrf").val()+$.sha1(pass)))
}
$("#My_login_form").ajaxSubmit(loginoptions);
delete loginoptions.data;
});
The problem with this code is that it is sending a "password" POST variable with the form field value and, a duplicated one with the value I set on "loginoptions.data".
Building off of Cristiano's answer, I was able to get this to work. If you use :beforeSubmit(), the changed value doesn't post, but if you use the :beforeSerialize(), it posts the changed value.
$('#ff').ajaxForm({
beforeSerialize:function(jqForm, options){
var serializedForm = decodeURIComponent(jqForm.serialize());
options.data = serializedForm.deserializeToObject();
options.data.tPassword = MD5($("#tPassword").val())
},
success:function(data){
// do stuff
}
});
If you want to do it anyhow then I think you can use callback function beforeSubmit: function(contentArray, $form, options){}
beforeSubmit: function(contentArray, $form, options){
for(var i=0; i<contentArray.length; i++){
if(contentArray[i].name == "password") {
contentArray[i].value = ($.sha1($("#My_login_form_csrf").val()+$.sha1(pass)))
}
}
}
It seems that ajaxSubmit uses the serialize() function of jquery on the form and then, adds the extra data serialized too. So, if I have a field named "password" with the value "1234" and then try to change that to "abcd", using "loginoptions.data.password", it will serialize everything and put the "options.data" like this:
"password=1234&field_2=value_2&password=abcd"
After many tries, I gave up on using ajaxSubmit function and decided to use ajax function to submit the form:
var the_form=$('form#My_login_form');
loginoptions.url=the_form.attr("action");
loginoptions.type=the_form.attr("method");
var serializedForm=decodeURIComponent(the_form.serialize());
loginoptions.data=serializedForm.deserializeToObject();
var pass=$("#My_login_form_password").val();
if (pass.length>0){
loginoptions.data.password= ($.sha1($("#My_login_form_csrf").val()+$.sha1(pass)));
}
$.ajax(loginoptions);
Here is the deserializeToObject() function:
function deserializeToObject (){
var result = {};
this.replace(
new RegExp("([^?=&]+)(=([^&]*))?", "g"),
function($0, $1, $2, $3) { result[$1] = $3; }
)
return result;
}
String.prototype.deserializeToObject = deserializeToObject;
Suppose in the database there is one table (for example student records) with a number of columns, but my HTML page only displays a few of them. For example: a table having the columns sno, sname, addr, age, dept, and dob and my page having only 3 fields: sno, sname, dept. Here I display the dept field in a combo box control and the rest of the fields are text and empty values.
My requirement is: when I select the dept from combobox the corresponding row vlaues like sno and sname have to display automatically in the text fields. How can I do this?
You make an ajax call to your server when you change the department. Your server returns your object as JSON. Your success handler in your ajax call takes the fields it needs from your JSON object and sets the appropriate html elements to those fields. For example, if you're using jQuery:
var myUrl = "http://some.domain/action/";
var success = function(response) {
$('#textField1').val(response.sno);
$('#textField2').val(response.sname);
}
$('#myDropDown').change(function() {
$.get(myUrl + $(this).val(), success);
});
If you don't want to send back all the properties of your object because you want to minimize bandwidth, you can form your own JSON object, but that's kind of a pain in the neck and if your object is not huge you might as well use whatever JSON serializer is available in the framework you're using and just serialize the object and send it through the wire.
Or here's another option. You could just make one initial AJAX call and then create a map from department to the other fields you want to set. Example:
var map = {};
var success = function(response) {
for (obj in response.objects) {
map[obj.department] = { sno: obj.sno, sname: obj.sname };
}
}
$.get(myUrl, success);
$('#myDropDown').change(function() {
var obj = map[$(this).val()];
$('#textField1').val(obj.sno);
$('#textField2').val(obj.sname);
}
Hope that helps.
I have included Zend_Form_Element_Hash into a form multiplecheckbox form. I have jQuery set to fire off an AJAX request when a checkbox is clicked, I pass the token with this AJAX request. The first AJAX request works great, but the subsequent ones fail.
I suspect it may be once the token has been validated it is then removed from the session (hop = 1).
What would be your plan of attack for securing a form with Zend Framework Hash yet using AJAX to complete some of these requests?
I finally abandoned using Zend_Form_Element_Hash and just created a token manually, registered it with Zend_Session and then checked it upon submission.
form.php
$myNamespace = new Zend_Session_Namespace('authtoken');
$myNamespace->setExpirationSeconds(900);
$myNamespace->authtoken = $hash = md5(uniqid(rand(),1));
$auth = new Zend_Form_Element_Hidden('authtoken');
$auth->setValue($hash)
->setRequired('true')
->removeDecorator('HtmlTag')
->removeDecorator('Label');
controller.php
$mysession = new Zend_Session_Namespace('authtoken');
$hash = $mysession->authtoken;
if($hash == $data['authtoken']){
print "success";
} else {
print "you fail";
}
This seems to work and still keeps things relatively sane and secure. I'd still rather use the Hash element, but I can't seem to make it work with AJAX.
Thanks all.
That's how to handled hash field in ajax form :
class AuthController extends Zend_Controller_Action
{
public function init()
{
$contextSwitch = $this->_helper->getHelper('contextSwitch');
$contextSwitch->addActionContext('index', 'json')
->initContext();
}
public function loginAction()
{
$form = new Application_Form_Login();
$request = $this->getRequest();
if ($request->isPost()) {
if ($form->isValid($request->getPost())) {
// some code ..
} else {
// some code ..
// Regenerate the hash and assign to the view
$reservationForm->hash->initCsrfToken();
$this->view->hash = $reservationForm->hash->getValue();
}
}
$this->view->form = $form;
}
}
And then in your view script ..
<? $this->dojo()->enable()
->requireModule('dojox.json.query')
->onLoadCaptureStart() ?>
function() {
var form = dojo.byId("login_form")
dojo.connect(form, "onsubmit", function(event) {
dojo.stopEvent(event);
var xhrArgs = {
form: this,
handleAs: "json",
load: function(data) {
// assign the new hash to the field
dojo.byId("hash").value = dojox.json.query("$.hash", data);
// some code ..
},
error: function(error) {
// some code ..
}
}
var deferred = dojo.xhrPost(xhrArgs);
});
}
<? $this->dojo()->onLoadCaptureEnd() ?>
Hope it's not too late :D
There is a solution:
Create, besides the form that will contain the data, a form without elements. From the controller you instantiate the two forms. Also in the controller, you add the element hash to the empty form. Both forms should be sent to the vision. Then, in the condition "if ($ request-> isXmlHttpRequest ())" in the controller you render the empty form. Then, you take the hash value with the method "getValue ()". This value must be sent in response by Ajax and then use JavaScript to replace the hash value that is already obsolete. The option to create an empty form for the hash is to avoid problems with other elements such as captcha that would have its id generated again if the form were rendered, and would also need to have the new information replaced. The validation will be done separately because there are two distinct forms. Later you can reuse the hash (empty) form whenever you want. The following are examples of the code.
//In the controller, after instantiating the empty form you add the Hash element to it:
$hash = new Zend_Form_Element_Hash('no_csrf_foo');
$hash_form->addElement('hash', 'no_csrf_foo', array('salt' => 'unique'));
//...
//Also in the controller, within the condition "if ($request->isXmlHttpRequest())" you render the form (this will renew the session for the next attempt to send the form) and get the new id value:
$hash_form->render($this->view);
$hash_value['hash'] = $hash_form->getElement('no_csrf_foo')->getValue();//The value must be added to the ajax response in JSON, for example. One can use the methods Zend_Json::decode($response) and Zend_Json::encode($array) for conversions between PHP array and JSON.
//---------------------------------------
//In JavaScript, the Ajax response function:
document.getElementById("no_csrf_foo").value = data.hash;//Retrieves the hash value from the Json response and set it to the hash input.
Leo
Form hashes are great in principle and a bit of a nightmare in practice. I think the best way to handle this is to return the new hash with the response when you make a request, and update the form markup or store in memory for your javascript as appropriate.
The new hash may be available from the form object, or you can read it from the session.
You hinted at the right answer in your question: increase the hop count.
There was specific mention of this in the ZF manual online, but they updated their manuals and now i can't find it (grin)- otherwise i would have posted the link for you.
If you want to use form validator in ajax side use following code :
Myform.php
class Application_Form_Myform extends Zend_Form
{
# init function & ...
public function generateform($nohash = false)
{
# Some elements
if(!$nohash)
{
$temp_csrf = new Zend_Session_Namespace('temp_csrf');
$my_hash = new Zend_Form_Element_Hash ( 'my_hash' );
$this->addElement ( $my_hash , 'my_hash');
$temp_csrf->hash = $my_hash->getHash();
}
# Some other elements
}
}
AjaxController.php
class AjaxController extends Zend_Controller_Action
{
// init ...
public function validateAction()
{
# ...
$temp_csrf = new Zend_Session_Namespace('temp_csrf');
if($temp_csrf->hash == $params['received_hash_from_client'])
{
$Myform = new Application_Form_Myform();
$Myform->generateform(true);
if($AF_Bill->isValid($params))
{
# Form data is valid
}else{
# Form invalid
}
}else{
# Received hash from client is not valid
}
# ...
}
}