I'm trying to make first steps with JavaScript using the jQuery-library and Ajax. I want to read a HTML-form and recieve the users input in a PHP file. The following is a JavaScript function to sends the form via Ajax to the webserver:
function get_post( ) {
$.ajax({
type : "post",
url : "ajax.php",
data : $("form").serialize(),
cache : false,
success: function( data ) {
console.log( data );
}
});
};
In the console.log the right input data are shown and also with the PHP-debug-output, which is programmed in ajax.php. console.log(data) gives:
Parameter: temperature
Sensorknoten: Node1
Start: 2017-04-20 14:15
End: 2017-04-06 06:30
which is obviously correct.
Echoing the PHP-variables in the Browser gives:
Parameter: FIELD EMPTY Sensorknoten: FIELD EMPTY Start: FIELD EMPTY End: FIELD EMPTY
ajax.php calls a class named UsersInput, which should retrieves the userinput with the gloabal $_POST. The different $_POST-methods in UserInput are similair to this
public function getNodes() {
$location = isset($_POST['location'])?$_POST['location']:"FIELD EMPTY";
return $location;
}
ajax.php:
<?php
require_once 'includes/autoload.php';
/*
* get users input from HTML-Form
* @param object: $userIn
*/
$userIn = new UserInput();
$param = $userIn->getParams();
$node = $userIn->getNodes();
$start = $userIn->getStartdate();
$end = $userIn->getEnddate();
//debug output
echo "Parameter: $param";
echo"<br />";
echo "Sensorknoten: $node";
echo"<br />";
echo "Start: $start";
echo"<br />";
echo "End: $end";
echo"<br />";
?>
This is the HTML-form:
<form>
<input type="hidden" name="nodeformsend" value="true">
<!-- Page Heading/Breadcrumbs -->
<div class="row">
<div class="col-lg-12">
<h1 class="page-header">Welcome!
<small>Now, you are able to visualize your Data</small>
</h1>
<ol class="breadcrumb">
<li><a href="index.html">Sensor Monitoring</a>
</li>
<li class="active">Visualize Data</li>
</ol>
</div>
</div>
<!-- table to select different Nodes -->
<div class="row">
<div class="col-md-3">
<div class="panel panel-default text-center">
<div class="panel-heading">
<h3 class="panel-title">Select Wireless Sensor Sodes</h3>
</div>
<div class="col-md">
<select class="form-control" id="location" name="location">
<?php for($i = 1; $i < 13; $i++) : ?>
<option name="location[<?php echo $i ?>]" value="Node<?php echo $i ?>">Wireless Senssor Node <?php echo $i ?></option>
<?php endfor; ?>
</select>
</div>
</div>
</div>
<!-- table to select different parameters -->
<div class="col-md-3">
<div class="panel panel-default text-center">
<div class="panel-heading">
<h3 class="panel-title">Select Parameteres</h3>
</div>
<div class="col-md">
<select class="form-control" id="parameter" name="parameter">
<option name="parameter[0]" value="temperature">Temperature</option>
<option name="parameter[1]" value="humidity">Humidity</option>
<option name="parameter[2]" value="pressure">Pressure</option>
</select>
</div>
</div>
</div>
<div class="col-md-3">
<div class="panel panel-default text-center">
<div class="panel-heading">
<h3 class="panel-title">Begin of Timestamp</h3>
</div>
<div class="input-group date" id="datetime-start" data-date-format="dd-mm-yyyy" >
<div class="input-group-addon">
<i class="glyphicon glyphicon-calendar"></i>
</div>
<input class="form-control" name="datetime-start" type="text" placeholder="YYYY-MM-DD HH:MM">
</div>
</div>
</div>
<!-- table to select Timestamps-->
<div class="col-md-3">
<div class="panel panel-default text-center">
<div class="panel-heading">
<h3 class="panel-title">End of Timestamp</h3>
</div>
<div class="input-group date" id="datetime-end" data-date-format="dd-mm-yyyy" >
<div class="input-group-addon">
<i class="glyphicon glyphicon-calendar"></i>
</div>
<input class="form-control" name="datetime-end" type="text" placeholder="YYYY-MM-DD HH:MM">
</div>
</div>
</div>
</div>
<input id="submit" type="button" value="submit" onclick="get_post();">
EDIT
Yes, of course! Here it is:
<?php
//__________This class parse the usersinput UI__________
class UserInput{
/**
* get Nodes from UsersInput
* $location = Node[i]
*/
public function getNodes() {
$location ='';
$location = isset($_POST['location'])?$_POST['location']:"FIELD EMPTY"; //load the inputs of user to a variable as an array
return $location;
}
/**
* get Nodes from UI
* $parameter = Temperature, Humidty, Pressure
*/
public function getParams() {
$parameter = isset($_POST['parameter'])?$_POST['parameter']:"FIELD EMPTY";
return $parameter;
}
/**
* get Nodes from UI
* $start = 'YYYY-mm-DD hh:ii:ss < $end
*/
public function getStartdate() {
$start = isset($_POST['datetime-start'])?$_POST['datetime-start']:"FIELD EMPTY";
return $start;
}
/**
* get Nodes from UI
* $end = 'YYYY-mm-DD hh:ii:ss
*/
public function getEnddate() {
$end = isset($_POST['datetime-end'])?$_POST['datetime-end']:"FIELD EMPTY";
return $end;
}
/**
* get Nodes from UI
*/
}