I am firt time trying DELETE method with fetch in javascript. I just want to read the sent data from my fetch in php. I am doing this:
... in js
fetch(this.url+"?deleteID="+ID,{method:'DELETE'})
... in php
if(($_SERVER['REQUEST_METHOD'] == 'DELETE')){
$id= $_GET["deleteID"];
}
but it is failing and I do not know why. The definition of $_GET is "An associative array of variables passed to the current script via the URL parameters" and I am passing deleteID as a param or not ? (When the method is GET, this works)
Thanks for explanation.
Im sorry, this works... I was using wrong URL
Related
What I am trying to do is to get an Id from a folder number.
Both my Id and my folder number (folder number is unique) are in the same controller.
I get the folder number from a text input and I then need to redirect the user to a page /Id.
My question is how should I handle it ?
Do I need to create a method getIdFromFolderNumber() in my controller and then call this function in my JS function ?
Or maybe do I need to do everything in a JS function (I know I need a JS function since I will use an AJAX request to redirect my user and to get the value from the input).
I don't need the code or anything, I just want to know the method I need to use to understand how to do it. I've started working on a very big project and since I am a junior developer I am a bit lost.
Thank you for your help.
You don't need any JS to achieve that. It's a simple form and redirection.
Once your form which gives you the number is submitted :
$number = $form->get('number')->getData();
Then you got your criteria for your doctrine request :
$id = $yourEntityRepository->findBy(['number' => $number)])->getId();
Now you have your ID for the redirection :
return $this->redirectToRoute('entity_show', ['id' => $id]);
IS that what you were looking for ?
Note : you don't need to store $number and $id as variables. It was only to make it clear. You can replace them by the actual requests where it's needed.
so i've been looking at how to record and send client-side data to a php server.
i'm not sure of the correct terminologies, but i think that using an ajax call to send a post to the php server is the most elegant way to solve this problem.
so i decided to implement this data exchange:
$("#"+activityInfo.ID).click(function(){
window.open(activityInfo.URL+"userId="+$("#userid").val()+"&activityId="+activityID+"&classId="+classID);
classid = classID;
activityid = activityID;
$("body").append("class: " + classid);
$("body").append("id: " + activityid);
$.post('http://chemcollective.org/chemvlab/php/updateProgress.php', { 'cid':classid , 'aid':activityid } );}); //i think this is the important line that sends the data
and the corresponding php file (updateProgress.php)
$class_id = $_POST['cid']; //receives the data
$activity_id = $_POST['aid'];
i'm not sure why this is the case, but class_id and activity_id variables always return an empty value.
i understand somewhat that the client-browser is on a page that is preloaded by information from a php server. but there were posts that said this is a possible way to communicate back to the php server with information from the client. i'm not really sure what is going on b/c at this point i don't really know what questions to ask.
one of the example explanations that i had been following:
Ajax passing data to php script
thanks for the help.
i've also played around with start_session() and storing/loading session variables as a way to transfer data information. this works but only for php <-> php communication. it does not for saving javascript variables, so i couldn't really use $_SESSION = ..... in my javascript code.
you need to get the cid and aid outside of the single-qouts while using $.post! try this:
$.post('http://chemcollective.org/chemvlab/php/updateProgress.php', { cid:classid , aid:activityid } );
I query the db i my model like so
function graphRate($userid, $courseid){
$query = $this->db->get('tblGraph');
return $query->result();
}
My controller gets data back from my model and I json encode it like so
if($query = $this->rate_model->graphRate($userid, $courseid)){
$data['graph_json'] = json_encode($query);
}
$this->load->view('graph', $data);
And thats returns me a json object like so
[
{"id":"1","title":"myTitle","score":"16","date":"2013-08-02"},
{"id":"2","title":"myTitle2","score":"17","date":"2013-09-02"},
{"id":"3","title":"myTitle3","score":"18","date":"2013-10-02"}
]
In my view graph I'm loading an js file
<script type="text/javascript" src="script.js"></script>
Now I want to use $data that is being sent from my controller to my view, to my external script.js to use as labels and data to feed my chart. But How do I get that Json data to my external script.js so I can use it?
1 more thing about the json data, isn't it possible to get the output of the json data as
{
"obj1":{"id":"1","title":"myTitle","score":"16","date":"2013-08-02"},
"obj2":{"id":"2","title":"myTitle2","score":"17","date":"2013-09-02"},
"obj3":{"id":"3","title":"myTitle3","score":"18","date":"2013-10-02"}
}
The problem isn't a Codeigniter problem, it's a javascript scope/file inclusion/where-do-i-get-my-data-from problem.
I run into this all the time and have used these solutions:
naming my php files with .php extensions and loading them as if they're views.
Just putting the script that needs data from a view IN the view file where it's used
Using an ajax request in my included js file to hit a controller and get json data.
I use #2 most frequently (for things like datatables where I WANT the js code right there next to the table it's referencing.
I use #1 occasionally, but try NOT to do that because it means some .js files are in my webroot/js dir and some are in teh application/views directory, making it confusing for me or anyone else who wants to support this project.
#3 is sometimes necessary...but I like to avoid that approach to minimize the number of requests being made and to try to eliminate totally superfluous requests (which that is).
You need to print the result of the output json string to the html generated file.
But you need to parse the string with some script. I would recommend you: http://api.jquery.com/jQuery.parseJSON/
For the second question. It is possible by doing:
$returnValue = json_encode(
array (
"obj1" => array("id"=>"1","title"=>"myTitle","score"=>"16","date"=>"2013-08-02"),
"obj2" => array("id"=>"2","title"=>"myTitle2","score"=>"17","date"=>"2013-09-02"),
"obj3" => array("id"=>"3","title"=>"myTitle3","score"=>"18","date"=>"2013-10-02"),
)
);
Print the output using PHP like:
echo json_encode($query);
Then from the client-side (where JavaScript resides) load that JSON that you printed using PHP. This can be done easily using JQuery.
Like this:
$.get("test.php", function(data) {
alert("Data Loaded: " + data);
});
You can find more information about this here: http://api.jquery.com/jQuery.get/
Now you'll need to parse this data so that JavaScript can understand what you got as text from the server. For that you can use the JSON.parse method on the "data" object in the aforementioned example. Once parsed, you can use the object like any other object in JavaScript. You can find more information about JSON.parse here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse
I hope that helps.
I am calling another application context from window.showModalDialog but confused with following work. Same code to pass parameter within showModalDialg.
var myArguments = new Object();
myArguments.param1 = "Hello World :)";
window.showModalDialog("java2sTarget.html", myArguments, '');
and i can read these myArguments(parameters) in generated HTML using following code:
<script>
document.write(window.dialogArguments.param1);//Hello World :)
</script>
I can't use query string & i am sending myArguments(parameter) because i want to hide parameter from Application user.
Now i am calling servlet from showModalDialog(..)
onclick="window.showModelDialog('http://localhost:7778/app/servlet/test',myArguments,'');"
onclick="window.showModelDialog('http://localhost:7778/app/servlet/test',myArguments,'');"
But as per my knowledge
Servlet --> Servlet container --> HTML+JS+CSS
so JS will be available at last phase, but i want to use in first phase(Servlet).
Now, i need to make some Decision in servelt code based on myArguments(parameter).
is there any way to read these myArguments(parameters) in servlet code?
Pass it as a request parameter in the query string.
var queryString = "param1=" + encodeURIComponent("Hello World :)");
onclick="window.showModelDialog('http://localhost:7778/app/servlet/test?' + queryString, myArguments, '');"
No, there's no other alternative. The request URL is not visible in the modal dialog anyway.
As main objective is to hide query string from User to avoid misuse of those parameters.
I tried following work around.
Developers send hidden parameters to get relative information form source(e.g.:DataBase). And we also know that we can send hidden information in Window.showModalDialog using dialogArguments
Work Around:
(i) I got relative information from server one-step before calling Window.showModalDialog using jQuery.getJSON()
(ii) i used google-gson API at servlet side to convert JavaBeans into Json strings.Solution 1 Solution 2
(iii) Convert JSON into javascript object using jQuery.parseJSON
var args = jQuery.parseJSON(json);
window.showModalDialog("pages/"+args.pageName, args, '');
i used args.pageName to make things dynamic
Please suggest improvements in this work-around. Thanks
I am a real noob when it comes to javascript/ajax, so any help will be very appreciated.
In reference to this question:
Updating a MySql database using PHP via an onClick javascript function
But mainly concerned with the answer left by Phill Sacre. I am wondering if someone could elaborate on how we are(if we can?) passing values/data through his example, using jquery.
The code example left by him is as follows:
function updateScore(answer, correct) {
if (answer == correct) {
$.post('updatescore.php');
}
}
...
<a onclick="updateScore(this, correct)" ...> </a>
Say for example, we are wanting to pass any number of values to the database with php, could someone give me a snippet example of what is required in the javascript function? Or elaborate on what is posted above please?
Thanks again all.
The simplest example I can think of is this. Make your AJAX call in your if block like this:
$.get('updatescore.php', {'score': '222'}, function(d) {
alert('Hello from PHP: ' + d);
});
On your "updatescore.php" script, just do that: update the score. And return a plain text stating wether the update operation was successful or not.
Good luck.
P.S.: You could also use POST instead of GET.
What you would do is on the php server side have a page lets say its update.php. This page will be visited by your javascript in an Ajax request, take the request and put it in a database.
The php might look something like this:
<?php
mysql_connect(...)
mysql_query("INSERT INTO table
(score) VALUES('$_GET["score"]') ")
Your javascript would simply preform an ajax request on update.php and send it the variables as get value "score".
Phil is not passing any values to the script. He's simply sending a request to the script which most likely contains logic to 'update' the score. A savvy person taking his test though could simply look at the HTML source and see the answer by checking to see what the anchor is doing.
To further nitpick about his solution, a set of radio buttons should be used, and within the form, a button or some sort of clickable element should be used to send the values to the server via an ajax request, and the values sent to the server can be analyzed and the status of the answer sent back to the page.
Since you're using jQuery, the code can be made unobtrusive as seen in the following example:
$('#submit_answer').click(function() {
var answer = 'blah' // With blah being the value of the radio button
$.get('updatescore.php',
{'value': answer},
function(d) {
alert('Your answer is: ' + d') // Where d is the string 'incorrect' or 'correct'
}
});
Enjoy.