Update DOM with jQuery ajax array results - php

I have search results generated by a 3rd party script that I would like to add data to. I have parsed the results to get an array of id's, and queried the database for additional fields. The ajax success method receives the formatted array back, but now I'm stuck on how to get those results into the right place in the DOM.
The HTML:
<div class="ihf-results-property-info">
<div class="ihf-results-price">LIST: $2,150,000</div>
<div class="ihf-results-links"> 24 Photos
</div>
<div class="ihf-results-extra-info">
<div class="ihf-results-listingnum hidden-xs">Listing # 727938</div>
</div>
Repeat...
The last div I included in the example has the unique ID I'm using for the query. I'd like to use that to associate the ajax return with proper placement in the DOM. Here is my javascript:
jQuery(document).ready(function($) {
// grab the listings numbers so we can query the db for extra data
var listings = $('.ihf-results-listingnum').map(function() {
// grab just the digits
var listingNum = $(this).text().replace(/[^0-9]/g, '');
// add the listing number to the parent so we can target it later
$( this ).parents('.ihf-results-extra-info').parent().addClass('marketing-details-' + listingNum);
return listingNum;
// use .get to create an array of the listing numbers
}).get();
$.ajax({
type: "GET",
url: "custom/07-idx-queries.php",
data: 'mlsNums=' + listings, // looks like ?mlsNums=735383,727468,699876...
success: function(result) {
// this logic came from here: http://stackoverflow.com/questions/15311320/how-to-work-with-jquery-ajax-and-php-array-return
resultJson = $.parseJSON(result);
if (typeof resultJson == 'object') {
jsObject = eval(resultJson);
jsArray = [];
for(elem in jsObject){
jsArray.push(jsObject[elem]);
}
console.log(jsArray);
// this works as expected, except keys are 0 based
// This is where it all falls apart. I want to extract each object and stick it in the DOM in the correct place
jQuery.each(jsArray, function(key, value) {
$( this ).appendTo('.marketing-details-' + key);
});
}
else {
console.log("error occurred");
}
},
error: function(xhr, status, error) {
console.log(xhr.responseText);
}
})
});
And the php I'm using produces the desired results from the db, with the exception that it is a numerical array. I think an associative array would work better when trying to put the results into the DOM, tha way I could use the ID's as the key and match them to the classes I added. Here is the relevant code from custom/07-idx-queries.php:
$mls_nums = explode(",",$_GET['mlsNums']);
// removed all of the conditionals to keep the question clean
$html = array();
foreach ($mls_nums as $mls_num) {
// just retreiving a single object from each row for now
$remarks = $mysqli->query("SELECT mr FROM listings WHERE ln = '$mls_num'")->fetch_object()->mr;
// format the data
$my_html = "<p class='marketing-remarks mlsnum-".$mls_num."'>$remarks</p>";
// build an array of the results - necessary?
array_push($html,$my_html);
}
// send the data back in a JSON string
echo json_encode($html);
So my goal is to query the db for up to 10 rows, and insert the results into an equal number of new divs that are children to a div with the same id number in its class. I greatly appreciate any help.

In your PHP do this:
$html[$mls_num] = $my_html;
// this isn't needed
// array_push($html,$my_html);
Now your returned data has a way to tie into the target div.
Not clear if you have control over the HTML in the first part of your example, but this would be one approach.
<div class="ihf-results-listingnum hidden-xs">Listing # 727938</div>
<div class="remarks" id="remarks_<?= $listingid; ?>"></div>
Then in the JavaScript $("#remarks_" + key).html(value);
Otherwise, you need to use jQuery to locate the div with the listing id using the :contains selector:
$("div:contains('# " + key + "')").appendTo(value);
'# " + key + "' would equate to # 1234 or whatever it is. This won't work if the same listing is on the page twice though!

Okay, here is the working success method. Thanks to LG_PDX for the cleaned up php. I eliminated the unnecessary processing as .each() appears to iterate just fine over the JSON response:
success: function(result) {
resultJson = $.parseJSON(result);
if (typeof resultJson == 'object') {
$.each(resultJson, function(key, value) {
$('.marketing-details-' + key).append( value );
});
}
},
error: function(xhr, status, error) {
console.log(xhr.responseText);
}

Related

Retrieve data from PHP file by ajax

I found a script on the net, which makes two PHP files interact.
Specifically, the first file (details.php) shows some statistical data of a football match. If the match is in progress, I show the live score by running another PHP file (live_score.php). The two files interact thanks to the following script, present in the details.php file
$(document).ready(function(){
setInterval(function() {
var id=<?php echo"$id"?>;
var x = "<?php echo"$cod"?>";
$("#risultato").load("live_score.php", {var:id, x});
refresh();
}, 5000);
});
from details.php, I call live_score.php passing it some parameters.
These parameters are used by the live_score.php file to retrieve the score and other information in real time.
To print the result on the screen in details.php, I use a simple ECHO inside the live_score.php file, but I would like to retrieve this data and the others in a different way, via ajax if possible, but I don't know if it can be done and how....can you help me please? Thank you
I think you have already solved half of your problem. From your code , you should first remove the "refresh()" to stop reloading the page every 5 seconds.
then make sure that the the payload is correct, because the word "var" is a reserved keyword in JavaScript.
HTML
<div id="risultato"></div>
Javascript
$.ajax({
url: "live_score.php",
type: "POST",
data: { id, x},
success: function(response) {
//this response will be the data from "live_score.php"
//now assuming that
// 1. you use vanilla javascript with plain html + css
// 2. the returning reponse looks like this
// [{"teamName": "theTeam1", "score": 10}, {"teamName": "theTeam2", "score": 10}]
//Clear the current score
$("#risultato").empty();
// Now iterate through the response,
$.each(response, function(index, item) {
var teamName = item.teamName;
var score = item.score;
var html = "<p><strong>" + teamName + "</strong>: " + score + "</p>";
// this code will append (add to the end) the data iterated
$("#risultato").append(html);
});
},
error: function(xhr, status, error) {
//if your code or ajax call had any problems ,
//you can debug here and write error handling logic here, like
if(error){
alert("failed to fetch data");
console.log(error);
}
}
});

JS and Ajax: how to dismantle JSON object consist of multiple DB records

I try to learn JS together with jQuery and Ajax, and until now it was more or less painless, but now I faced myself with some obstacles about getting result from called PHP script, initiated by Ajax. What is my problem here? I have a MySQL table and I wanted to pull some data from JS by Ajax call. I tested my query to check is it correct and make result and with same query I built PHP script. Here is my JS file:
...
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
</head>
<body>
<script>
callphp(12,14);
//
function callphp(par1, par2) {
$.ajax({
type: "POST",
url: "_ajax2php2.php",
cache: false,
dataType: "json",
data: { "po1": par1, "po2":par2 },
success: function(data, status, jqXHR){
jss=JSON.stringify(data);
alert(jss);
//
var strBuilder = [];
for(key in data){
if (data.hasOwnProperty(key)) {
strBuilder.push("Key is " + key + ", value is " +data[key] + "\n"); }
}
alert(strBuilder.join(""));
},
error: function(data) {
alert( "params error" );
}
});
// end of JS
and here is my PHP script:
<?php
$eol="<br/>";
$uuu= isset($_POST['po1']) ? $_POST['po1'] : '';
$zzz= isset($_POST['po2']) ? $_POST['po2'] : '';
$con=mysqli_connect("localhost","root","some_password","mydbase");
// Check connection
if (mysqli_connect_errno())
{
echo "Fail to MySQL: " . mysqli_connect_error();
}
mysqli_select_db($con,"mydbase");
$query4 = "SELECT * from mytable WHERE uc_id='$uuu' AND pr_id='$zzz' ";
$result4 = mysqli_query($con, $query4);
$row4= mysqli_fetch_assoc($result4);
if(mysqli_num_rows($result4) > 1) {
while($row4[]=mysqli_fetch_assoc($result4)) {
$data = $row4; }
}
else
{$data=$row4;}
echo json_encode($data, JSON_UNESCAPED_UNICODE);
/* free result set */
mysqli_free_result($result4);
mysqli_close($con);
//end of php
?>
and it seems that it works good when PHP query return just one record, if there are 2 or more then I'm unable to "dismantle" JSON object by this JS code, because for example if my query return 3 records, in alert it appears like
Key is 0, value is [object Object]
Key is 1, value is [object Object]
Key is name_of_field1, value is 1
Key is name_of_field2, value is 12
Key is name_of_field3, value is 2
Key is name_of_field4, value is 1
Key is name_of_field5, value is 14
Key is name_of_field6, value is 2015-09-10
and I need to be able to get each particular record fields of each record in order to fill with it some HTML table. How to write this part of code that resolve JSON response consist of two or more records made by PHP? I tried examples I found here but no one met my needs. Thanks.
In your while loop after the DB query, you are just overwriting the value for $data with every iteration. I would suggest not having different logic for cases with one row in result set vs. more than one row, as this does nothing but add complexity to your code. Just return an array every time and you will be better off. Your code around the query might look like this:
$data = array();
$result4 = mysqli_query($con, $query4);
if($result4) {
while($row = mysqli_fetch_assoc($result4) {
$data[] = $row;
}
}
echo json_encode($data, JSON_UNESCAPED_UNICODE);
This simplifies this section of code and will also simplify the client-side code since now you can write it to simply expect to work with an array of objects in all cases.
This means that in javascript your code might look like (ajax success handler code shown):
success: function(data, status, jqXHR){
// data is an array, with each array entry holding
// an object representing one record from DB result set
var recordCount = data.length;
console.log(recordCount+' records returned in response.');
// you can iterate through each row like this
for(i=0;i<recordCount;i++) {
// do something with each record
var record = data[i];
// in this example, I am just logging each to console
console.log(record);
// accessing individual properties could be done like
console.log(record.name_of_field1);
console.log(record.name_of_field2);
// and so on...
}
}
You should get in the habit of using console.log() rather than alert() or similar for debugging your javascript, as alert() actually interrupts your javascript code execution and could introduce problems in debugging more complex javascript (particularly when there are asynchronous activities going on). Using the javascript console functionalty built into your browser should be fundamental practice for any javascript developer.

Multiple Arrays returned by json from PHP

To begin with I am building a complete CRM running Ajax and there is a lot to this, so please be patient and read the whole thing.
I have an ajax script returning several json arrays. When I display the return value from my php script I get this:
[{"packages":{"id":"1","name":"Land Line"}},{"packages":{"id":"2","name":"Cellular w\/Alarm.com"}},{"packages":{"id":"3","name":"Home Automation"}}]
What I am trying to do is separate the arrays so I can make a select drop down from it. Before anyone says anything, yes I know how to do that my itself, but I am needing the form this script is populating to be a select dropdown or a complete filled in form based off of the id going into another script. It is a bit confusing, so don't ding me for it please.
Here is the PHP script alliance_form.php:
$equip = "SELECT * FROM packages WHERE brand='$brand'";
if($db->query($equip) === false) {
trigger_error('Wrong SQL: ' . $query . ' Error: ' . $db->error, E_USER_ERROR);
} else {
$result = $db->query($equip);
$array = array();
foreach($result as $r) {
$array[] = array(
"packages" => array(
"id" => $r['id'],
"name" => $r['name']
)
);
}
echo json_encode($array);
}
Here is the jquery going to the PHP form and coming back to input the information:
$.ajax({
type: "POST",
url: "/crm/alliance_form.php",
data: dataString,
success: function(msg)
{
$("#package-form").html(msg);
$.each(msg.packages, function(i, object) {
$.each(object, function(index, value) {
alert(value);
});
});
},
error: function(error)
{
$(".error").html(error);
}
});
This is part of an ordering system of a CRM, so this script is checking the database for existing orders under the id. If the id is there then it is supposed to come back with the order information and I populate the form. If not it will give a select dropdown to select a package which then populates an empty form. That is the gist of what I am on right now.
Here is the question: Why can't I get a response from JQuery on the each() loop on this. One return comes back with a regular array, and this one is a nested array.
I'm not quite clear on what you're asking, but here are my thoughts on this:
You've got .packages in the wrong place. Instead of this:
$.each(msg.packages, function(i, object) {
$.each(object, function(index, value) {
...
You should have written this:
$.each(msg, function(i, object) {
$.each(object.packages, function(index, value) {
...
Better yet, you could just get rid of packages altogether. It's an unnecessary level in the JSON structure.
Also, I don't think jQuery knows that the response is JSON. For this to work, you need either dataType: 'json' in the list of arguments to $.ajax, or something on the server to set the MIME type appropriately.
I'm also concerned about $("#package-form").html(msg);, because msg is not an HTML string.
You should try something like this (Example)
msg = $.parseJSON(msg); // parse JS to object
$.each(msg, function(i, object) {
$.each(object.packages, function(index, value) {
console.log(value);
});
});
Instead of $.each(msg.packages, function(i, object){...}) because msg is an array of objects and in your given example there are three objects right now and each object has a packages item (nested object) which contains id and name.
Update : You can also use, just one loop (Example)
msg = $.parseJSON(msg); // parse JS to object
$.each(msg, function(i, object) {
console.log(object.packages.id);
console.log(object.packages.name);
});
Sorry guys, I threw out my back and couldn't get to my code from home.
Anyways I tried both solutions you provided, and I have been looking at this for a while but neither worked. I have this updated to:
$("#brand").click(function () {
var brand = $(this).attr('rel');
$("#order-form").empty();
var contact_id = $("#contact_id").val();
var dataString = "contact_id=" + contact_id +"&brand=" + brand + "";
//alert("test");
$.ajax({
type: "POST",
url: "/crm/alliance_form.php",
data: dataString,
//dataType: "json",
success: function(msg)
{
//$("#package-form").html(msg);
$.each(msg, function(i, object) {
if(msg.packages) {
$("#package-form").append("<select>");
$.each(object.packages, function(index, value) {
$("#package-form").append('<option value="'+value+'">'+index+'</option>');
});
$("#package-form").append('</select>');
}
});
},
error: function(error)
{
$(".error").html(error);
}
});
});
This just returns nothing not even a blank select box. The $("#package-form").html(msg); is just so I can see the output how the php script is sending it back. The if statement is just to run a verification to see if the array has a nested array with packages in it. I need the return function to do a certain action if it does. Very Important!
As for the dataType: 'json', line in the ajax, it doesn't give me a return value if I have that placed in it. But when I remove it, it will display the array.
Nothing has been changed in the PHP file besides moving the query like suggested.
Ok guys. I got the answer! I have it like this:
$("#brand").click(function () {
$("#order-form").empty();
$("#package-form").empty();
var msg = '[{"packages":{"1":"Land Line"}},{"packages":{"2":"Cellular w\/Alarm.com"}},{"packages":{"3":"Home Automation"}}]';
var newData = JSON.parse(msg);
var newSelect = "<select>";
$.each(newData, function(i, ob) {
$.each(ob.packages, function(index, value) {
newSelect += '<option value="'+index+'">'+value+'</option>';
});
});
newSelect += "</select>";
$("#package-form").append(""+newSelect+"");
});
Here is the fiddle: http://jsfiddle.net/M78vE/

jQuery Looping JSON Data

I have created APIs to retrieve data from my server and then I get the data with json format like this :
{
"items": [
{
"2013-03-28": 1771,
"2013-03-29": 1585,
"2013-03-30": 1582,
"2013-03-31": 1476,
"2013-04-01": 2070,
"2013-04-02": 2058,
"2013-04-03": 1981,
"2013-04-04": 1857,
"2013-04-05": 1806,
"2013-04-06": 1677,
"2013-04-07": 1654,
"2013-04-08": 2192,
"2013-04-09": 2028,
"2013-04-10": 1974,
"2013-04-11": 1954,
"2013-04-12": 1813,
"2013-04-13": 1503,
"2013-04-14": 1454,
"2013-04-15": 1957,
"2013-04-16": 1395
}
]
}
How do I looping with my json data dynamically using jQuery?
My code :
<html>
<head></head>
<body>
<script src="jquery-1.9.1.js"></script>
<script>
$(document).ready(function() {
$.ajax({
type : "GET",
url: "myurl.php",
cache: false,
dataType: "jsonp",
success:function(data){
if(data==''){
alert('Fail');
}else{
alert('Success');
}
}
})
});
</script>
</body>
</html>
How do I modify my jQuery to get data dynamically following the date that the data will change every day as in the example I wrote above data??
Thanks before...
There are a few things to consider with your example data, but in your case, the following will do the trick:
var importantObject = data.items[0];
for(var item in importantObject ){
var theDate = item;//the KEY
var theNumber = importantObject[item];//the VALUE
}
Here is a working example
But what does all this mean?...
First of all, we need to get the object that we want to work with, this is the list of dates/numbers found between a { } (which means an object) - an array is defined as [ ]. With the example given, this is achieved like so:
var importantObject = data.items[0];
because items is an array, and the object we want is the first item in that array.
Then we can use the foreach technique, which effectively iterates all properties of an object. In this example, the properties are the date values:
for(var item in importantObject ){ ... }
Because we are iterating the properties, item will be the property value (i.e. the date bit), so item is the date value:
var theDate = item;//the KEY
Finally we get the number part. We can access the value of any given object property by using the string value of the property index (relative to the object), like so:
var theNumber = importantObject[item];//the VALUE
If you already know which date you want the value for, then you can access it directly like so:
var myValue = data.items[0]["2013-04-16"];//myValue will be 1395 in this example
Using jQuery.each() loop through the items
$.each(data.items[0], function (key, value) {
console.log(key + ": " + value);
var date = key;
var number = value;
});
DEMO HERE
You can use the jQuery each function to do this. For example like this:
$.each(data, function(k, v) {
// Access items here
});
Where k is the key and v is the value of the item currently processed.
//get your detail info.
var detail = data.items[0];
$.each(detail, function(key, val) {
console.log(key + ": " + val);
}

Multiple deletion in flexigrid

I'm unable to do multiple deletion when I try something on my own and single delete is working but multiple delete is not working need help!
// Flexigrid
if (com=='Delete')
{
if($('.trSelected').length>0){
if(confirm('Delete ' + $('.trSelected').length + ' rows?')){
var items = parseInt($('.trSelected').text(),10);
var itemlist =items;
for(i=0;i<items.length;i++){
itemlist+= items[i].id.substr(3)+" "; //its contains no value for multiple delete
}
$.ajax({
type: "POST",
dataType: "json",
url: "delete.php",
data: "items="+itemlist,
success: function(data){
alert("Query: "+data.query+" - Total affected rows: "+data.total);
$("#flex1").flexReload();
}
});
}
} else {
return false;
}
}
This is the problem:
var items = parseInt($('.trSelected').text(),10);
var itemlist =items;
for(i=0;i<items.length;i++){
itemlist+= items[i].id.substr(3)+" "; //its contains no value for multiple delete
}
Whenever there are multiple items, you cannot call parseInt() on the jQuery collection, as it doesn't know what to do with it. Instead, you can map the selection into a list of parsed .text() values, e.g.
$('.trSelected').map(function(index, item) {
return parseInt($(item).text(), 10);
}
This will turn a group of elements into an array of numbers. But then you cannot use it in the item list in the next for loop. So instead you need to simplify the logic, instead of returning the parsed int list, just return the id as you require it processed. e.g.
$('.trSelected').map(function(index, item) {
return item.id.substr(3);
}
Just be careful with the map, if you want to treat the item as a regular DOM element, use item, but if you need jQuery stuff like .css() you need to wrap item in $. i.e. $(item). Alternatively you can use $(this) to refer to the current item, which will likely be faster.
Good luck!

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