I know this question has already been asked a few times, but I'm trying to use javascript with php. I have a file called parsing.php that parses through a xml feed and converts the metadata into JSON Object called "data". The parsing is done using ajax calls with JavaScript and JQuery.
<script src="json2.js" type="text/javascript" language="javascript"></script>
<script type="text/javascript">
$.ajax({
type: 'GET',
url: 'fakeFeed.xml',
dataType: 'xml',
async: false,
success: function(data, textStatus, jqXHR) {
function getRandom(max) {
return Math.floor(Math.random() * max);
}
function getThumbId(small) {
var num = getRandom(15);
if (num == 0) {
num = 1;
}
if (num < 10) {
num = '0' + num;
}
return num.toString();
}
var categories = new Array(); // Array for the categories
var category = {
name : '',
videos: []
};
var data1 = data;
var data = {
categories: []
};
$(data1).find('item').each(function () {
var el = $(this);
var categoryName = el.find('category').text();
var p = categories.indexOf(categoryName);
if( p == -1) {
categories.push(categoryName);
var category = {
name: categoryName,
videos: []
};
for (var j = 0; j<5; j++) {
var video = {
sources: [el.find('media\\:content, content').attr('url')],
thumb : 'images\/thumbs\/thumb' + getThumbId() + '.jpg',
title : el.find("title").text(),
subtitle : el.find("description").text(),
description: ""
}
category.videos.push(video);
}
data.categories.push(category);
}
});
window.data = JSON.stringify(data);
<script>
"<?php
$dataVar = ?> <script type=text/javascript>window.data</script><?php;?>"
"<?php
print_r($dataVar,true);
?>"
The only reason why I need to use javascript and php is because I want to use the "print_r()" function from php which allows me to return the information rather than just printing it to the screen, but unfortunately I can't get it to work. If anybody knows of other alternative or could give some advice that would be greatly appreciated.
Here is what I believe you are trying to achieve, written in PHP:
$dom = new DOMDocument();
$dom->load("fakeFeed.xml");
$data = ["categories"=>[]]; // may need to use array() instead of [] depending on PHP version
foreach($dom->getElementsByTagName('item') as $item) {
$name = trim($item->getElementsByTagName('category')->item(0)->textContent);
if( !isset($data['categories'][$name])) {
$cat = ["name"=>$name,"videos"=>[]]; // again, adjust if you're on an older version
// I'm not entirely sure what you're trying to achieve on this part.
// you seem to be getting the same video five times...
// revise your approach, comment if needed, and I can try to help
// for now, "insert code here"
$data['categories'][$name] = $cat;
}
}
// we were using the name as a key for simplicity, now just take the values
$data['categories'] = array_values($data['categories']);
// done! $data now has your data.
var_dump($data);
If you really want to use this instead of using document.log for JS:
$.ajax({
type: "POST",
url: "some_php.php",
data: JSON.stringify(data);
})
.done(function( msg ) {
document.write(msg);
});
and the some_php.php
$data = json_decode(file_get_contents('php://input'), true);
print_r($data);
Related
I am able to pass one value from the controller method, see first cal query to return just the calorie value from the SQL LINQ query. However, I cannot get two colums, see my code controller code and javascript in the view below (I cannot work out what is causing zero data to be populated
I can see var mytext in javascript code return : {"foodCal":101,"foodVarient":"Vegan"}
public JsonResult GetCalories(string Productdata)
{
//THis is the orginal code which returns one value, CALORIES
//var calquery = (from c in _context.Foods
// where c.FoodName == Productdata
// select c.FoodCal).FirstOrDefault();
var calquery = (from c in _context.Foods
where c.FoodName == Productdata
select new
{ c.FoodCal, c.FoodVarient }
).FirstOrDefault();
if (calquery != null)
{
return Json(calquery);
}
else
{
calquery = null;
return Json(calquery);
}
}
<script src="/lib/jquery/dist/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function ()
{
document.getElementById("FoodType").onchange = function ()
{
$.ajax({
type: 'POST',
dataType: 'json',
url: '#Url.Action("GetCalories")',
data: { Productdata: document.getElementById("FoodType").value },
success: function (data)
{
var mytext = JSON.stringify(data);
alert(mytext);
var obj = JSON.parse(json);
document.getElementById("FoodCalories").value = obj.foodCal;
document.getElementById("FoodHealth").value = obj.foodVarient;
}
});
}
});
</script>
I figured out the problem
var object =JSON.parse(mytext), not json
problem solved.
Hope other people benefit from this code.
I have some problem about parsing array php to javascript array, I use json_encode but I get error like
Uncaught SyntaxError: Unexpected number
This my code :
<?php
$b=array();
$a=array();
$pat = 0;
for($i = 0; $i<15;$i++)
{
if($pat == 5)
{
ini_set('memory_limit', '-1');
array_push($b,$a);
$a = array();
$pat = 0;
}
ini_set('memory_limit', '-1');
array_push($a,$i.'-1');
$pat = $pat +1;
}
?>
$(document).ready(function() {
$('#example').DataTable( {
serverSide: true,
ordering: false,
searching: false,
ajax: function ( data, callback ) {
var out1 = "<?php echo json_encode($b) ?>";
var out = [["0-1","0-2","0-3","0-4","0-5"],["1-1","1-2","1-3","1-4","1-5"]];
console.log(out);
setTimeout( function () {
callback( {
// draw: data.draw,
data: out,
recordsTotal: 5000000,
recordsFiltered: 5000000
} );
});
},
} );
} );
I want result like variable out, what can I do to fix this bug thanks,
and I'm sorry for my bad English
Generally we use rest apis for this kind of work but you can use given code snip in picture for your reference. If you have any specific question, let me know
<?
$cl = $row["saved_json_string_column"];
?>
expecting this output from the db query to create a new array
//cl = '[{"ifeid":1,"ans":"Yes","type":"SkipTo","target":"2"},{"ifeid":2,"ans":"Yes","type":"SkipTo","target":"5"}]';
cl = '<? echo $cl;?>';
// I would like to start with the saved 'cl' array and push new items to it.
skptoQarry = new Array();
//javascript function loop (not shown) generates vars and pushes to new array.
thisItem_eid = 1;
yes_no_is_this = 'No';
SkipToTartgetEID = 5;
var skptoQarry_temp = {
"ifeid" : thisItem_eid,
"ans" : yes_no_is_this,
"type" : "SkipTo",
"target" : SkipToTartgetEID
};
skptoQarry.push(skptoQarry_temp);
cl = JSON.stringify(skptoQarry); //for ajax post to php for saving
//this is what is in saved the DB via ajax post
[{"ifeid":1,"ans":"Yes","type":"SkipTo","target":"2"},{"ifeid":2,"ans":"Yes","type":"SkipTo","target":"5"}]
//...but when PHP echos it out only this comes out: cl = "[,]"
// I think i'm saving it wrong or echoing the column data the wrong way.
//read text from mysql and append where needed.
cl = $.parseJSON(cl);
jQuery.each(cl, function (i) {
jQuery.each(this, function (key, value) {
if (key == "ifeid") {
$('div').append('if this id: '+value+'<br>');
} else if (key == "ans") {
$('div').append('is: '+value+'<br>');
} else if (key == "type") {
$('div').append('then: '+value+'<br>');
} else if (key == "target") {
$('div').append('this id: '+value+'<br><br>');
}
});
});
function saveit(){
saved_logic_dialog = JSON.stringify(skptoQarry);
var posturl = "myurl?event=save&saved_logic_dialog="+saved_logic_dialog;
jQuery.ajax({
traditional: true,
type: "POST",
url: posturl,
success: function(data) {
//messages and stuff
}
});
}
//php
$loadvfsql = "SELECT `saved_logic_dialog` FROM `questions` WHERE `id` = '{$id}' ORDER BY `questions`.`question_order` ASC";
$loadv_result=mysql_query($loadvfsql);
while($rows=mysql_fetch_array($loadv_result)){
$clc = $rows['current_logic_cont'];
$cl = $rows['saved_logic_dialog'];
//more stuff
}
This will ensure your array of objects is properly encoded - jQuery will not encode the URL for you.
var posturl = "myurl?event=save&saved_logic_dialog=" + encodeURIComponent(saved_logic_dialog);
When saving to DB - check for properly escaping the value (as it will certainly contain quotes);
When echoing the value back into HTML - use htmlspecialchars($cl) to properly escape the symbols which might have special meaning in HTML.
Before using the value in JavaScript - use JSON.parse(cl) to convert from String into Array.
I have the following javascript:
function update_number_of_adds_found(field_dropdown, selected_value) {
selected_value="";
for(i=0; i<document.submitadd.elements.length; i++){
if(document.submitadd.elements[i].value !='' && document.submitadd.elements[i].value != 'Αναζήτηση' && document.submitadd.elements[i].checked !=''){
selected_value += (document.submitadd.elements[i].name +'-' + document.submitadd.elements[i].value +' ');
}
}
var result5 = $.ajax({
'url': '<?php echo site_url('search/findNumberOfAdds'); ?>/' + selected_value,
'async': false
}).responseText;
$('#totalNumOfAdds').empty();
$("#totalNumOfAdds").append(result5);
}
This script send the data in the following format:
addtypeid-1%20isnew-1%20geographicareaid-3
I am a bit restriced in which symbols i can use, because I am using codeigniter, and if I use & for example i get message that i use dissalowed characters in my url.
My question is how can i transform this data in the format $key['fieldname'] = $value['fieldvalue'] so i can built my where clausule?
I was trying something with explode or replace, but without success so far. Any help will be deeply appreciated.
Regards, John
Just following up on my comment above ... You can try something like this ... I haven't tested it but should give you ideas to how to go about ...
jQuery('.submit').click(function(){
var str = $("#myForm").serialize();
str += '&serialize=' + encodeURIComponent(str);
str += '&action=myformsubmit';
jQuery.ajax('phpscripturl.php', {
method: 'POST',
data: str,
success: function(response) {
alert('Got this from the server: ' + response);
},
beforeSend: function(){
alert('Sending...');
}
});
return false;
});
By serializing the form inputs with jQuery's serialize you create a string like:
a=1&b=2&c=3&d=4&e=5&postID=10
So you can fetch this serialized data as
$data = $_POST['serialize'];
foreach($data as $key => $value) {
if($value == '') continue; //skip empty values as per your request
//else save in db etc ...
}
Build an JSON object then Stringify and post it in one variable. Then use json_decode($_POST['key']) to create a PHP object and can access the values easily.
In JS
var ValueToSend = new Object();
ValueToSend.field1 = value1;
var postString = JSON.stringify(ValueToSend)
In PHP
$Object = decode_json($_POST['key']);
So, what i'm trying to do is to send an AJAX request, but as you can see i have many fields in my form, and i use an array to make validations, i would like to use the same array, to pass the values to be sent via AJAX:
I never used the for loop in JS, but seems familiar anyway.
The way the loop is made, obviously wont work:
for (i=0;i<required.length;i++) {
var required[i] = $('#'+required[i]).attr('value');
This will create the variables i want, how to use them?
HOPEFULLY, you guys can help me!!! Thank you very much!
required = ['nome','sobrenome','endereco','codigopostal','localidade','telemovel','email','codigopostal2','localidade2','endereco2','nif','entidade','codigopostal3','localidade3','endereco3','nserie','modelo'];
function ajaxrequest() {
for (i = 0; i < required.length; i++) {
var required[i] = $('#' + required[i]).attr('value');
var dataString = 'nome=' + required[0] + '&sobrenome=' + required[1];
}
$.ajax({
type: "POST",
url: "ajaxload/como.php",
data: dataString,
success: function() {
$(".agendarleft").html("SUCESS");
}
});
To help ensure that the appropriate element IDs and values are passed, loop through the various elements and add the data to an object first.
jQuery:
required = ['nome', 'sobrenome', 'endereco', 'codigopostal', 'localidade', 'telemovel', 'email', 'codigopostal2', 'localidade2', 'endereco2', 'nif', 'entidade', 'codigopostal3', 'localidade3', 'endereco3', 'nserie', 'modelo'];
function ajaxrequest() {
var params = {}; // initialize object
//loop through input array
for (var i=0; i < required.length; i++) {
// set the key/property (input element) for your object
var ele = required[i];
// add the property to the object and set the value
params[ele] = $('#' + ele).val();
}
$.ajax({
type: "POST",
url: "ajaxload/como.php",
data: params,
success: function() {
$(".agendarleft").html("SUCESS");
}
});
}
Demo: http://jsfiddle.net/kPR69/
What would be much cleaner would be to put a class on each of the fields you wish to save and use this to iterate through them. Then you wouldn't need to specify the input names either and you could send a json object directly to the Service;
var obj = {};
$('.save').each(function () {
var key = $(this).attr('id');
var val = $(this).val();
if (typeof (val) == "undefined")
val = "''"
obj[key] = val;
}
Then send obj as the data property of your AJAX call....
There are a few issues with your code. 'required' is being overwritten and is also being re-declared inside of the loop.
I would suggest using pre-written library, a few I included below.
http://jquery.malsup.com/form/#validation
https://github.com/posabsolute/jQuery-Validation-Engine
Otherwise the follow would get you close. You may need to covert the array into a string.
var required = ['nome','sobrenome'];
function ajaxrequest() {
var values;
for (i = 0; i < required.length; i++) {
var values[i] = $('#' + required[i]).attr('value');
}
$.ajax({
type: "POST",
url: "ajaxload/como.php",
data: values,
success: function() {
$(".agendarleft").html("SUCESS");
}
});
}