Plaid::InvalidRequestError - javascript

I am working on sending info from the Plaid link button using this tutorial from Stripe.
I have added the following code to the onSuccess function:
onSuccess: function(public_token, metadata) {
// Send the public_token and account ID to your app server.
var form = $('#payment-form');
form.append("<input type='hidden' name='plaid_public_token' value='" + public_token + "'/>");
form.append("<input type='hidden' name='plaid_account_id' value='" + metadata.account_id + "'/>");
form.get(0).submit();
}
I thought this function would be called when the user successfully adds their bank using the Plaid link. Essentially, this would get called when the form closes.
However, the behavior appears that it submits the form when the user opens the Plaid link, sending blank data to my controller.
How can I send this information to my server when Plaid is complete? Currently, it's saying that the variables are empty, but I think it's because I can't even use the Plaid pop-up before this error is being thrown.
Plaid::InvalidRequestError (
Error Type : INVALID_REQUEST
Error Code : INVALID_FIELD
Error Message : public_token must be a non-empty string
Display Message :
Request ID : A1AXs
):

in regards to "public_token must be a non-empty string" and the link given from stripe.
when you create Plaid and give it a config it seems like possibly you're not giving it your link token as shown in example. Start by creating an object that contains all the needed props ie: onSuccess, onExits and token
based on what you have and what is given should look like the following:
const configs = {
// where linkData.link_token is data returned from the call to the link api.
token: linkData.link_token || '',
onLoad: function() {
// The Link module finished loading.
},
onSuccess: function(public_token, metadata) {
// Send the public_token and account ID to your app server.
var form = $('#payment-form');
form.append("<input type='hidden' name='plaid_public_token' value='" + public_token + "'/>");
form.append("<input type='hidden' name='plaid_account_id' value='" + metadata.account_id + "'/>");
form.get(0).submit();
},
onExit: async function(err, metadata) {
// The user exited the Link flow.
if (err != null) {
// The user encountered a Plaid API error
// prior to exiting.
}
// metadata contains information about the institution
// that the user selected and the most recent
// API request IDs.
// Storing this information can be helpful for support.
},
};
var linkHandler = Plaid.create(configs);

Related

Is there some way I can create an html button that automatically sends an email when clicked? [duplicate]

I want my website to have the ability to send an email without refreshing the page. So I want to use Javascript.
<form action="javascript:sendMail();" name="pmForm" id="pmForm" method="post">
Enter Friend's Email:
<input name="pmSubject" id="pmSubject" type="text" maxlength="64" style="width:98%;" />
<input name="pmSubmit" type="submit" value="Invite" />
Here is how I want to call the function, but I'm not sure what to put into the javascript function. From the research I've done I found an example that uses the mailto method, but my understanding is that doesn't actually send directly from the site.
So my question is where can I find what to put inside the JavaScript function to send an email directly from the website.
function sendMail() {
/* ...code here... */
}
You can't send an email directly with javascript.
You can, however, open the user's mail client:
window.open('mailto:test#example.com');
There are also some parameters to pre-fill the subject and the body:
window.open('mailto:test#example.com?subject=subject&body=body');
Another solution would be to do an ajax call to your server, so that the server sends the email. Be careful not to allow anyone to send any email through your server.
Indirect via Your Server - Calling 3rd Party API - secure and recommended
Your server can call the 3rd Party API. The API Keys are not exposed to client.
node.js
const axios = require('axios');
async function sendEmail(name, email, subject, message) {
const data = JSON.stringify({
"Messages": [{
"From": {"Email": "<YOUR EMAIL>", "Name": "<YOUR NAME>"},
"To": [{"Email": email, "Name": name}],
"Subject": subject,
"TextPart": message
}]
});
const config = {
method: 'post',
url: 'https://api.mailjet.com/v3.1/send',
data: data,
headers: {'Content-Type': 'application/json'},
auth: {username: '<API Key>', password: '<Secret Key>'},
};
return axios(config)
.then(function (response) {
console.log(JSON.stringify(response.data));
})
.catch(function (error) {
console.log(error);
});
}
// define your own email api which points to your server.
app.post('/api/sendemail/', function (req, res) {
const {name, email, subject, message} = req.body;
//implement your spam protection or checks.
sendEmail(name, email, subject, message);
});
and then use use fetch on client side to call your email API.
Use from email which you used to register on Mailjet. You can authenticate more addresses too. Mailjet offers a generous free tier.
Update 2023: As pointed out in the comments the method below does not work any more due to CORS
This can be only useful if you want to test sending email and to do this
visit https://api.mailjet.com/stats (yes a 404 page)
and run this code in the browser console (with the secrets populated)
Directly From Client - Calling 3rd Party API - not recommended
in short:
register for Mailjet to get an API key and Secret
use fetch to call API to send an email
Like this -
function sendMail(name, email, subject, message) {
const myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");
myHeaders.set('Authorization', 'Basic ' + btoa('<API Key>'+":" +'<Secret Key>'));
const data = JSON.stringify({
"Messages": [{
"From": {"Email": "<YOUR EMAIL>", "Name": "<YOUR NAME>"},
"To": [{"Email": email, "Name": name}],
"Subject": subject,
"TextPart": message
}]
});
const requestOptions = {
method: 'POST',
headers: myHeaders,
body: data,
};
fetch("https://api.mailjet.com/v3.1/send", requestOptions)
.then(response => response.text())
.then(result => console.log(result))
.catch(error => console.log('error', error));
}
sendMail('Test Name',"<YOUR EMAIL>",'Test Subject','Test Message')
Note: Keep in mind that your API key is visible to anyone, so any malicious user may use your key to send out emails that can eat up your quota.
I couldn't find an answer that really satisfied the original question.
Mandrill is not desirable due to it's new pricing policy, plus it required a backend service if you wanted to keep your credentials safe.
It's often preferable to hide your email so you don't end up on any lists (the mailto solution exposes this issue, and isn't convenient for most users).
It's a hassle to set up sendMail or require a backend at all just to send an email.
I put together a simple free service that allows you to make a standard HTTP POST request to send an email. It's called PostMail, and you can simply post a form, use JavaScript or jQuery. When you sign up, it provides you with code that you can copy & paste into your website. Here are some examples:
JavaScript:
<form id="javascript_form">
<input type="text" name="subject" placeholder="Subject" />
<textarea name="text" placeholder="Message"></textarea>
<input type="submit" id="js_send" value="Send" />
</form>
<script>
//update this with your js_form selector
var form_id_js = "javascript_form";
var data_js = {
"access_token": "{your access token}" // sent after you sign up
};
function js_onSuccess() {
// remove this to avoid redirect
window.location = window.location.pathname + "?message=Email+Successfully+Sent%21&isError=0";
}
function js_onError(error) {
// remove this to avoid redirect
window.location = window.location.pathname + "?message=Email+could+not+be+sent.&isError=1";
}
var sendButton = document.getElementById("js_send");
function js_send() {
sendButton.value='Sending…';
sendButton.disabled=true;
var request = new XMLHttpRequest();
request.onreadystatechange = function() {
if (request.readyState == 4 && request.status == 200) {
js_onSuccess();
} else
if(request.readyState == 4) {
js_onError(request.response);
}
};
var subject = document.querySelector("#" + form_id_js + " [name='subject']").value;
var message = document.querySelector("#" + form_id_js + " [name='text']").value;
data_js['subject'] = subject;
data_js['text'] = message;
var params = toParams(data_js);
request.open("POST", "https://postmail.invotes.com/send", true);
request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
request.send(params);
return false;
}
sendButton.onclick = js_send;
function toParams(data_js) {
var form_data = [];
for ( var key in data_js ) {
form_data.push(encodeURIComponent(key) + "=" + encodeURIComponent(data_js[key]));
}
return form_data.join("&");
}
var js_form = document.getElementById(form_id_js);
js_form.addEventListener("submit", function (e) {
e.preventDefault();
});
</script>
jQuery:
<form id="jquery_form">
<input type="text" name="subject" placeholder="Subject" />
<textarea name="text" placeholder="Message" ></textarea>
<input type="submit" name="send" value="Send" />
</form>
<script>
//update this with your $form selector
var form_id = "jquery_form";
var data = {
"access_token": "{your access token}" // sent after you sign up
};
function onSuccess() {
// remove this to avoid redirect
window.location = window.location.pathname + "?message=Email+Successfully+Sent%21&isError=0";
}
function onError(error) {
// remove this to avoid redirect
window.location = window.location.pathname + "?message=Email+could+not+be+sent.&isError=1";
}
var sendButton = $("#" + form_id + " [name='send']");
function send() {
sendButton.val('Sending…');
sendButton.prop('disabled',true);
var subject = $("#" + form_id + " [name='subject']").val();
var message = $("#" + form_id + " [name='text']").val();
data['subject'] = subject;
data['text'] = message;
$.post('https://postmail.invotes.com/send',
data,
onSuccess
).fail(onError);
return false;
}
sendButton.on('click', send);
var $form = $("#" + form_id);
$form.submit(function( event ) {
event.preventDefault();
});
</script>
Again, in full disclosure, I created this service because I could not find a suitable answer.
I know I am wayyy too late to write an answer for this question but nevertheless I think this will be use for anybody who is thinking of sending emails out via javascript.
The first way I would suggest is using a callback to do this on the server. If you really want it to be handled using javascript folowing is what I recommend.
The easiest way I found was using smtpJs. A free library which can be used to send emails.
1.Include the script like below
<script src="https://smtpjs.com/v3/smtp.js"></script>
2. You can either send an email like this
Email.send({
Host : "smtp.yourisp.com",
Username : "username",
Password : "password",
To : 'them#website.com',
From : "you#isp.com",
Subject : "This is the subject",
Body : "And this is the body"
}).then(
message => alert(message)
);
Which is not advisable as it will display your password on the client side.Thus you can do the following which encrypt your SMTP credentials, and lock it to a single domain, and pass a secure token instead of the credentials instead.
Email.send({
SecureToken : "C973D7AD-F097-4B95-91F4-40ABC5567812",
To : 'them#website.com',
From : "you#isp.com",
Subject : "This is the subject",
Body : "And this is the body"
}).then(
message => alert(message)
);
Finally if you do not have a SMTP server you use an smtp relay service such as Elastic Email
Also here is the link to the official SmtpJS.com website where you can find all the example you need and the place where you can create your secure token.
I hope someone find this details useful. Happy coding.
You can find what to put inside the JavaScript function in this post.
function getAjax() {
try {
if (window.XMLHttpRequest) {
return new XMLHttpRequest();
} else if (window.ActiveXObject) {
try {
return new ActiveXObject('Msxml2.XMLHTTP');
} catch (try_again) {
return new ActiveXObject('Microsoft.XMLHTTP');
}
}
} catch (fail) {
return null;
}
}
function sendMail(to, subject) {
var rq = getAjax();
if (rq) {
// Success; attempt to use an Ajax request to a PHP script to send the e-mail
try {
rq.open('GET', 'sendmail.php?to=' + encodeURIComponent(to) + '&subject=' + encodeURIComponent(subject) + '&d=' + new Date().getTime().toString(), true);
rq.onreadystatechange = function () {
if (this.readyState === 4) {
if (this.status >= 400) {
// The request failed; fall back to e-mail client
window.open('mailto:' + to + '?subject=' + encodeURIComponent(subject));
}
}
};
rq.send(null);
} catch (fail) {
// Failed to open the request; fall back to e-mail client
window.open('mailto:' + to + '?subject=' + encodeURIComponent(subject));
}
} else {
// Failed to create the request; fall back to e-mail client
window.open('mailto:' + to + '?subject=' + encodeURIComponent(subject));
}
}
Provide your own PHP (or whatever language) script to send the e-mail.
I am breaking the news to you. You CAN'T send an email with JavaScript per se.
Based on the context of the OP's question, my answer above does not hold true anymore as pointed out by #KennyEvitt in the comments. Looks like you can use JavaScript as an SMTP client.
However, I have not digged deeper to find out if it's secure & cross-browser compatible enough. So, I can neither encourage nor discourage you to use it. Use at your own risk.
There seems to be a new solution at the horizon. It's called EmailJS. They claim that no server code is needed. You can request an invitation.
Update August 2016: EmailJS seems to be live already. You can send up to 200 emails per month for free and it offers subscriptions for higher volumes.
window.open('mailto:test#example.com'); as above
does nothing to hide the "test#example.com" email address from being harvested by spambots. I used to constantly run into this problem.
var recipient="test";
var at = String.fromCharCode(64);
var dotcom="example.com";
var mail="mailto:";
window.open(mail+recipient+at+dotcom);
In your sendMail() function, add an ajax call to your backend, where you can implement this on the server side.
Javascript is client-side, you cannot email with Javascript. Browser recognizes maybe only mailto: and starts your default mail client.
JavaScript can't send email from a web browser. However, stepping back from the solution you've already tried to implement, you can do something that meets the original requirement:
send an email without refreshing the page
You can use JavaScript to construct the values that the email will need and then make an AJAX request to a server resource that actually sends the email. (I don't know what server-side languages/technologies you're using, so that part is up to you.)
If you're not familiar with AJAX, a quick Google search will give you a lot of information. Generally you can get it up and running quickly with jQuery's $.ajax() function. You just need to have a page on the server that can be called in the request.
It seems like one 'answer' to this is to implement an SMPT client. See email.js for a JavaScript library with an SMTP client.
Here's the GitHub repo for the SMTP client. Based on the repo's README, it appears that various shims or polyfills may be required depending on the client browser, but overall it does certainly seem feasible (if not actually significantly accomplished), tho not in a way that's easily describable by even a reasonably-long answer here.
There is a combination service. You can combine the above listed solutions like mandrill with a service EmailJS, which can make the system more secure.
They have not yet started the service though.
Another way to send email from JavaScript, is to use directtomx.com as follows;
Email = {
Send : function (to,from,subject,body,apikey)
{
if (apikey == undefined)
{
apikey = Email.apikey;
}
var nocache= Math.floor((Math.random() * 1000000) + 1);
var strUrl = "http://directtomx.azurewebsites.net/mx.asmx/Send?";
strUrl += "apikey=" + apikey;
strUrl += "&from=" + from;
strUrl += "&to=" + to;
strUrl += "&subject=" + encodeURIComponent(subject);
strUrl += "&body=" + encodeURIComponent(body);
strUrl += "&cachebuster=" + nocache;
Email.addScript(strUrl);
},
apikey : "",
addScript : function(src){
var s = document.createElement( 'link' );
s.setAttribute( 'rel', 'stylesheet' );
s.setAttribute( 'type', 'text/xml' );
s.setAttribute( 'href', src);
document.body.appendChild( s );
}
};
Then call it from your page as follows;
window.onload = function(){
Email.apikey = "-- Your api key ---";
Email.Send("to#domain.com","from#domain.com","Sent","Worked!");
}
There is not a straight answer to your question as we can not send email only using javascript, but there are ways to use javascript to send emails for us:
1) using an api to and call the api via javascript to send the email for us, for example https://www.emailjs.com says that you can use such a code below to call their api after some setting:
var service_id = 'my_mandrill';
var template_id = 'feedback';
var template_params = {
name: 'John',
reply_email: 'john#doe.com',
message: 'This is awesome!'
};
emailjs.send(service_id,template_id,template_params);
2) create a backend code to send an email for you, you can use any backend framework to do it for you.
3) using something like:
window.open('mailto:me#http://stackoverflow.com/');
which will open your email application, this might get into blocked popup in your browser.
In general, sending an email is a server task, so should be done in backend languages, but we can use javascript to collect the data which is needed and send it to the server or api, also we can use third parities application and open them via the browser using javascript as mentioned above.
If and only if i had to use some js library, i would do that with SMTPJs library.It offers encryption to your credentials such as username, password etc.
The short answer is that you can't do it using JavaScript alone. You'd need a server-side handler to connect with the SMTP server to actually send the mail. There are many simple mail scripts online, such as this one for PHP:
Use Ajax to send request to the PHP script ,check that required field are not empty or incorrect using js also keep a record of mail send by whom from your server.
function sendMail() is good for doing that.
Check for any error caught while mailing from your script and take appropriate action.
For resolving it for example if the mail address is incorrect or mail is not send due to server problem or it's in queue in such condition report it to user immediately and prevent multi sending same email again and again.
Get response from your script Using jQuery GET and POST
$.get(URL,callback);
$.post(URL,callback);
Since these all are wonderful infos there's a little api called Mandrill to send mails from javascript and it works perfectly. You can give it a shot. Here's a little tutorial for the start.
Full AntiSpam version:
<div class="at">info<i class="fa fa-at"></i>google.com</div>
OR
<div class="at">info#google.com</div>
<style>
.at {
color: blue;
cursor: pointer;
}
.at:hover {
color: red;
}
</style>
<script>
const el33 = document.querySelector(".at");
el33.onclick = () => {
let recipient="info";
let at = String.fromCharCode(64);
let dotcom="google.com";
let mail="mailto:";
window.open(mail+recipient+at+dotcom);
}
</script>
Send an email using the JavaScript or jQuery
var ConvertedFileStream;
var g_recipient;
var g_subject;
var g_body;
var g_attachmentname;
function SendMailItem(p_recipient, p_subject, p_body, p_file, p_attachmentname, progressSymbol) {
// Email address of the recipient
g_recipient = p_recipient;
// Subject line of an email
g_subject = p_subject;
// Body description of an email
g_body = p_body;
// attachments of an email
g_attachmentname = p_attachmentname;
SendC360Email(g_recipient, g_subject, g_body, g_attachmentname);
}
function SendC360Email(g_recipient, g_subject, g_body, g_attachmentname) {
var flag = confirm('Would you like continue with email');
if (flag == true) {
try {
//p_file = g_attachmentname;
//var FileExtension = p_file.substring(p_file.lastIndexOf(".") + 1);
// FileExtension = FileExtension.toUpperCase();
//alert(FileExtension);
SendMailHere = true;
//if (FileExtension != "PDF") {
// if (confirm('Convert to PDF?')) {
// SendMailHere = false;
// }
//}
if (SendMailHere) {
var objO = new ActiveXObject('Outlook.Application');
var objNS = objO.GetNameSpace('MAPI');
var mItm = objO.CreateItem(0);
if (g_recipient.length > 0) {
mItm.To = g_recipient;
}
mItm.Subject = g_subject;
// if there is only one attachment
// p_file = g_attachmentname;
// mAts.add(p_file, 1, g_body.length + 1, g_attachmentname);
// If there are multiple attachment files
//Split the files names
var arrFileName = g_attachmentname.split(";");
// alert(g_attachmentname);
//alert(arrFileName.length);
var mAts = mItm.Attachments;
for (var i = 0; i < arrFileName.length; i++)
{
//alert(arrFileName[i]);
p_file = arrFileName[i];
if (p_file.length > 0)
{
//mAts.add(p_file, 1, g_body.length + 1, g_attachmentname);
mAts.add(p_file, i, g_body.length + 1, p_file);
}
}
mItm.Display();
mItm.Body = g_body;
mItm.GetInspector.WindowState = 2;
}
//hideProgressDiv();
} catch (e) {
//debugger;
//hideProgressDiv();
alert('Unable to send email. Please check the following: \n' +
'1. Microsoft Outlook is installed.\n' +
'2. In IE the SharePoint Site is trusted.\n' +
'3. In IE the setting for Initialize and Script ActiveX controls not marked as safe is Enabled in the Trusted zone.');
}
}
}

JavaScript form fetch request submitting empty values when they are filled in

I am creating a Login form in JavaScript and am trying to send this form to my Ruby on Rails backend.
I have two problems:
When the form loads, it triggers the eventListener and sends the blank form's data to the backend. I have e.preventDefault() commented out in the second function below because I kept getting the error that it is not a function. Note: in the backend for Rails, I get the following message when I type in params. "Permitted: false" concerns me.
<ActionController::Parameters {"controller"=>"sessions", "action"=>"create", "session"=>{}} permitted: false>
When I fill in the form with an email and password and click the submit button, the loginData (from loginButton.addEventListener("submit", submitLogin(loginData) submits a blank value for the email and 'password' for the password (which are the default values I set to test the values) even though these elements are filled in in the form with an actual email address and password.
Function loading login form (note: this loads just fine):
// create the elements
var div = document.createElement("div"),
log = document.createElement("div"),
loginForm = document.createElement("form"),
//set form attributes
loginForm.setAttribute("method", "POST");
// set body styles
document.body.style.textTransform = "capitalize";
log.id = "login";
log.innerHTML = "login";
// set loginForm styles
loginForm.id = "loginForm";
// set the elements and styles on the form
loginForm.innerHTML =
"<label>username</label><br/>" +
"<input type='text' id='login-email' value='' placeholder='email' style='" +
inputStyles +
"' /><br/>" +
"<label>password</label><br/>" +
"<input type='password' id='login-password' value='value' placeholder='*************' style='" +
inputStyles +
"' /><br/>" +
"<input type='submit' id='login-button' value='Login' style='" +
btnStyles +
"' />" +
"<p><a style='" +
forgetStyles +
"' href='#'>forget password ?</a></p><br/>";
// append the buttons and form on main-div
div.appendChild(log);
div.appendChild(loginForm);
// append main-div on the body
document.body.appendChild(div);
//get login form values to submit
let loginEmail = document.getElementById("login-email").value;
let loginPassword = document.getElementById("login-password").value;
let loginData = { member: { loginEmail, loginPassword } };
}
SubmitLogin Function (fetch request to Rails backend):
async function submitLogin(e) {
// e.preventDefault();
const loginData = new FormData(e.target);
debugger;
let options = {
method: "POST",
headers: {
"Content-Type": "application/json",
"Access-Control-Allow-Origin":
"file:///Users/awb/Coding/Flatiron/Projects/bookclub-javascript-rails-api/bookclub-frontend-javascript/index.html",
"Access-Control-Allow-Methods": "POST",
"Access-Control-Allow-Headers": "Content-Type, Authorization",
Accept: "application/json",
},
body: JSON.stringify(loginData),
};
fetch("http://localhost:3000/login", options)
.then((resp) => {
resp.json();
})
.then((member) => {
console.log(member);
return new Member(member);
});
}
If it matters, this is the order of my scripts at the bottom of my index.html page:
<script src="src/suggestion.js"></script>
<script src="src/member.js"></script>
<script src="src/gathering.js"></script>
<script src="src/book_group.js"></script>
<script src="src/book.js"></script>
<script src="src/login_registration_form.js"></script>
<script src="src/index.js"></script>
Where index.js calls the function "loadRegistrationLogin()" as the last line on index.js
My routes are:
Rails.application.routes.draw do
resources :members, only [:create, :index, :show]
resources :registrations, only: [:create]
resources :sessions, only: [:create]
post '/login', to: 'sessions#create'
delete '/logout', to: 'sessions#destroy'
get '/logged_in', to: 'sessions#is_logged_in?'
root to: "static#home"
end
and finally, my session controller:
class SessionsController < ApplicationController
include CurrentMemberConcern
skip_before_action :verify_authenticity_token
def create
member = Member
.find_by(email: params[:member][:email])
.try(:authenticate, params[:member][:password])
if member
login!
render json: {
status: :created,
logged_in: true,
member: member
}
else
render json: {
status: 401,
errors: ['No such member', 'Verify credentials and try again or sign up']
}
end
end
end
Your form is submitting automatically because of the way you've set the event handler. The .addEventListener() API requires a reference to a callback function as the second argument. But you passed a function call with arguments like this:
loginButton.addEventListener("submit", submitLogin(loginData));
You have two choices to fix this:
Pass a reference.
This will require loginData to be available to the handler in some other fashion.
loginButton.addEventListener("submit", submitLogin);
Enclose the call within a function expression:
loginButton.addEventListener("submit", ()=>submitLogin(loginData));
Option 2 is generally preferred when needing to pass parameters to the handler. But you'll see below, for you, option one is the way to go.
The leads to the next problem - submitLogin() function itself.
async function submitLogin(e) {
// e.preventDefault();
const loginData = new FormData(e.target);
In your eventListener setup you went out of your way to pass a parameter to this function - yet it isn't used. You correctly attempt to create a new FormData() Object. But interestingly enough you pass e.target, which is the button element. That won't work Reference.
To fix that change:
const loginData = new FormData(e.target);
to: (assuming only one form on the page)
const loginData = new FormData(document.forms[0]);
But we aren't done yet. Using e.preventDefault() is unnecessary if you set up your button correctly. A button with type="submit" is designed to submit the form to the server. That's also true for a button with no type attribute at all. You clearly don't want to submit the form, so don't put a submit button on it.
Change the login button from:
type="submit"
To:
type="button"
Now you can remove the e parameter from your function.
All of that should get you a lot closer to success.

Facebook javascript API - adding page/tab

Trying to get the installation of my Facebook Canvas app working. What I need to do is let the use choose a page on which to install the app. I am getting a list of pages via the API, putting them in a select box to choose from, which works fine:
FB.api('/me/accounts', function(response){
for (var i=0 ; i<response.data.length ; i++)
{
// now build a DOM node to allow selection of this page
var option_node = $("<option value='" +
response.data[i].id +
"'>" +
response.data[i].name + "</option>");
$('#facebook_page_list').append(option_node);
}
});
Selecting the option gets to the right place, where I use the page Id and access token to attach a page tab for my app:
var api_call = '/' + page_id + '/tabs/';
FB.api(api_call,
'post',
{
page_id: page_id,
tab: 'app_' + appId,
access_token: page_access_token,
custom_name: 'Joe Agent'
},
function(response){
console.log("Did this work?");
console.log(response);
});
but I get an error message:
Tab 'app_' does not exist on profile
Why does the "add this tab to this page" call return the error "that tab doesn't exist on that page"? What am I missing here?
THanks,
andy
Ok, so I needed to do more setup on my page in order to do this. going by this page: https://developers.facebook.com/docs/pages/tabs, I got past this issue. In case this trips someone else up.

Passing a JavaScript value to PHP on completion of quiz

I have a web page that allows users to complete quizzes. These quizzes use JavaScript to populate original questions each time it is run.
Disclaimer: JS Noob alert.
After the questions are completed, the user is given a final score via this function:
function CheckFinished(){
var FB = '';
var AllDone = true;
for (var QNum=0; QNum<State.length; QNum++){
if (State[QNum] != null){
if (State[QNum][0] < 0){
AllDone = false;
}
}
}
if (AllDone == true){
//Report final score and submit if necessary
NewScore();
CalculateOverallScore();
CalculateGrade();
FB = YourScoreIs + ' ' + RealScore + '%. (' + Grade + ')';
if (ShowCorrectFirstTime == true){
var CFT = 0;
for (QNum=0; QNum<State.length; QNum++){
if (State[QNum] != null){
if (State[QNum][0] >= 1){
CFT++;
}
}
}
FB += '<br />' + CorrectFirstTime + ' ' + CFT + '/' + QsToShow;
}
All the Javascript here is pre-coded so I am trying my best to hack it. I am however struggling to work out how to pass the variable RealScore to a MySql database via PHP.
There are similar questions here on stackoverflow but none seem to help me.
By the looks of it AJAX seems to hold the answer, but how do I implement this into my JS code?
RealScore is only given a value after the quiz is complete, so my question is how do I go about posting this value to php, and beyond to update a field for a particular user in my database on completion of the quiz?
Thank you in advance for any help, and if you require any more info just let me know!
Storing data using AJAX (without JQuery)
What you are trying to do can pose a series of security vulnerabilities, it is important that you research ways to control and catch these if you care about your web application's security. These security flaws are outside the scope of this tutorial.
Requirements:
You will need your MySQL database table to have the fields "username" and "score"
What we are doing is writing two scripts, one in PHP and one in JavaScript (JS). The JS script will define a function that you can use to call the PHP script dynamically, and then react according to it's response.
The PHP script simply attempts to insert data into the database via $_POST.
To send the data to the database via AJAX, you need to call the Ajax() function, and the following is the usage of the funciton:
// JavaScript variable declarations
myUsername = "ReeceComo123";
myScriptLocation = "scripts/ajax.php";
myOutputLocation = getElementById("htmlObject");
// Call the function
Ajax(myOutputLocation, myScriptLocation, myUsername, RealScore);
So, without further ado...
JavaScript file:
/**
* outputLocation - any HTML object that can hold innerHTML (span, div, p)
* PHPScript - the URL of the PHP Ajax script
* username & score - the respective variables
*/
function Ajax(outputLocation, PHPScript, username, score) {
// Define AJAX Request
var ajaxReq = new XMLHttpRequest();
// Define how AJAX handles the response
ajaxReq.onreadystatechange=function(){
if (ajaxReq.readyState==4 && xml.status==200) {
// Send the response to the object outputLocation
document.getElementById(outputLocation).innerHTML = ajaxReq.responseText;
}
};
// Send Data to PHP script
ajaxReq.open("POST",PHPScript,true);
ajaxReq.setRequestHeader("Content-type","application/x-www-form-urlencoded");
ajaxReq.send("username="username);
ajaxReq.send("score="score);
}
PHP file (you will need to fill in the MYSQL login data):
<?php
// MYSQL login data
DEFINE(MYSQL_host, 'localhost');
DEFINE(MYSQL_db, 'myDatabase');
DEFINE(MYSQL_user, 'mySQLuser');
DEFINE(MYSQL_pass, 'password123');
// If data in ajax request exists
if(isset($_POST["username"]) && isset($_POST["score"])) {
// Set data
$myUsername = $_POST["username"];
$myScore = intval($_POST["score"]);
} else
// Or else kill the script
die('Invalid AJAX request.');
// Set up the MySQL connection
$con = mysqli_connect(MYSQL_host,MYSQL_user,MYSQL_pass,MYSQL_db);
// Kill the page if no connection could be made
if (!$con) die('Could not connect: ' . mysqli_error($con));
// Prepare the SQL Query
$sql_query="INSERT INTO ".TABLE_NAME." (username, score)";
$sql_query.="VALUES ($myUsername, $myScore);";
// Run the Query
if(mysqli_query($con,$sql))
echo "Score Saved!"; // Return 0 if true
else
echo "Error Saving Score!"; // Return 1 if false
mysqli_close($con);
?>
I use these function for ajax without JQuery its just a javascript function doesnt work in IE6 or below. call this function with the right parameters and it should work.
//div = the div id where feedback will be displayed via echo.
//url = the location of your php script
//score = your score.
function Ajax(div, URL, score){
var xml = new XMLHttpRequest(); //sets xmlrequest
xml.onreadystatechange=function(){
if (xml.readyState==4 && xml.status==200){
document.getElementById(div).innerHTML=xml.responseText;//sets div
}
};
xml.open("POST",URL,true); //sets php url
xml.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xml.send("score="score); //sends data via post
}
//Your PHP-script needs this.
$score = $_POST["score"]; //obtains score from POST.
//save your score here
echo "score saved"; //this will be displayed in the div set for feedback.
so call the javascript function with the right inputs, a div id, the url to your php script and the score. Then it will send the data to the back end, and you can send back some feedback to the user via echo.
Call simple a Script with the parameter score.
"savescore.php?score=" + RealScore
in PHP Side you save it
$score = isset ($_GET['score']) ? (int)$_GET['score'] : 0;
$db->Query('INSERT INTO ... ' . $score . ' ...');
You could call the URL via Ajax or hidden Iframe.
Example for Ajax
var request = $.ajax({
url: "/savescore.php?score=" + RealScore,
type: "GET"
});
request.done(function(msg) {
alert("Save successfull");
});
request.fail(function(jqXHR, textStatus) {
alert("Error on Saving");
});

Sign up user using parse works with breakpoint, fails without

I have a signup form with the fields Firstname, lastname, email, class of, and college major and I am trying to send the information from the form to a parse user object. When I set a breakpoint at "user.signup" the code steps through and I see the new user show up in my parse dashboard. However, if I remove the breakpoint and submit the form I get the error:
"Error: 100 XMLHttpRequest failed:
{"statusText":"","status":0,"response":"","responseType":"","responseXML":null,"responseText":"","upload":{"ontimeout":null,"onprogress":null,"onloadstart":null,"onloadend":null,"onload":null,"onerror":null,"onabort":null},"withCredentials":false,"readyState":4,"timeout":0,"ontimeout":null,"onprogress":null,"onloadstart":null,"onloadend":null,"onload":null,"onerror":null,"onabort":null}"
the code for my javascript file is:
function SignUp() {
var user = new Parse.User();
var form = document.getElementById("signup-form")
var firstname = form.firstname.value;
var lastname = form.lastname.value;
var email = form.email.value;
var grad = form.grad.value;
var major = form.major.value;
var password = "6789";
user.set("firstname", firstname);
user.set("lastname", lastname);
user.set("email", email);
user.set("username", email);
user.set("grad", grad);
user.set("major", major);
user.set("password", password);
user.signUp(null, {
success: function(user) {
// Hooray! Let them use the app now.
alert("Thank you for signing up. We'll keep you updated!");
},
error: function(user, error) {
// Show the error message somewhere and let the user try again.
alert("Error: " + error.code + " " + error.message);
}
});
return false;
};
In my html file I am calling this function at:
<form class="form-signup" role="form" id="signup-form" onsubmit="SignUp();">
Is there an issue with how I'm storing the values? I don't understand how something can work with a breakpoint but not without. Any help is really appreciated!
That’s the typical problem with returning a value from within an asynchronous method … which is not possible.
Prevent the default submitting of the form, and then submit it explicitly within the call back function.
There is an another way also to solve this problem:
Instead of form in form class="form-signup" role="form" id="signup-form" onsubmit="SignUp()"
Write div i.e. div class="form-signup" role="form" id="signup-form" onsubmit="SignUp()"
As stated above, just add e.preventDefault(); at the start of your function and document.getElementById("your-form-id").submit(); or in this case just form.submit(); (because it was defined earlier in the script by var form) into the success callback and it should work! Thought I would add a bit of clarity to reinforce CBroe's answer as it wasn't specified what the form.submit function looked like exactly.

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