Code Samples: April 2017

Friday, April 28, 2017

jQuery UI Sortable and Draggable NOT working on iPad, iPhone or Android

jQuery UI sortable, draggable, re-sizable and all others working fine on browsers with no problems, however when I test it on hand held devices such as iPad, iPod, iPhone and Android it doesn't work. I cannot drag the boxes or sort the order at all.

Touch Punch will fix this issue, and most other jQuery UI on touch device problems. They described the process as hack, but it it is a lifesaver too.

Also you can download library from here.

Saturday, April 22, 2017

Generate PDF in CakePHP 3.x with CakePDF And DomPDF

At first you need to install CakePDF to your project. Add "friendsofcake/cakepdf": "3.2.*" to "composer.json" file under "require" section as follows:

"require": {
"friendsofcake/cakepdf": "3.2.*"

}

Now open command panel and navigate to project directory and execute:

composer update friendsofcake/cakepdf --lock

Or you can direct execute the command "composer require friendsofcake/cakepdf" to install CakePDF. This command will install a suitable latest version to your project.

Above command will install CakePDF to your project.

Next step is to install DomPDF.

Execute following command to install DomPDF
"composer require dompdf/dompdf".

Installation complete, now add the following line to "config/bootstrap.php" file:

Plugin::load('CakePdf', ['bootstrap' => true]);

Configure::write('CakePdf', [
'engine' => [
'className' => 'CakePdf.Dompdf',
'options' => [
'print-media-type' => false,
'outline' => true,
'dpi' => 96
]
],
'pageSize' => 'Letter',
]);
define('DOMPDF_ENABLE_AUTOLOAD', false);
define('DOMPDF_ENABLE_HTML5PARSER', true);
define('DOMPDF_ENABLE_REMOTE', true);

Configuration options:

engine: Engine to be used (required), or an array of engine config options
- className: Engine class to use
- options: Engine specific options. Currently only for WkHtmlToPdf, where the options are passed as CLI arguments, and for DomPdf, where the options are passed to the DomPdf class constructor.
crypto: Crypto engine to be used, or an array of crypto config options
- className: Crypto class to use
- binary: Binary file to use
pageSize: Change the default size, defaults to A4
orientation: Change the default orientation, defaults to portrait
margin: Array or margins with the keys: bottom, left, right, top and their values
title: Title of the document
delay: A delay in milliseconds to wait before rendering the pdf
windowStatus: The required window status before rendering the PDF
encoding: Change the encoding, defaults to UTF-8
download: Set to true to force a download, only when using PdfView
filename: Filename for the document when using forced download

Now we can do 3 things with our CakePDF

1. Download PDF

2. Stream PDF to browser

3. Save PDF to our server

Lets go for download & stream PDF:

Add the following code block in "config/router.php" file:

Router::scope('/pdf_download/:id', function (RouteBuilder $routes) {
$routes->addExtensions(['pdf']);
$routes->connect('/', ['controller' => 'Pages', 'action' => 'cakePdfDownload']);

});

Now in your "PagesController.php" add below code snippet:

public function cakePdfDownload($name = null)
{
Configure::write('CakePdf.download', true);
Configure::write('CakePdf.filename', "MyCustomName.pdf");

}

Now need to create a layout file for pdf. Create "default.ctp" under "Template/Layout/Pdf" directory with following contents:

<?php
use Cake\Core\Configure;
$cakeDescription = 'CakePHP: the rapid development PHP framework';
?>
<!DOCTYPE html>
<html>
<head>
<?= $this->Html->charset() ?>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>
<?= $cakeDescription ?>:
<?= $this->fetch('title') ?>
</title>

<?= $this->Html->meta('icon') ?>
<?= $this->Html->css('base.css', ['fullBase' => true]) ?>
<?= $this->Html->css('cake.css', ['fullBase' => true]) ?>
<?= $this->Html->css('home.css', ['fullBase' => true]) ?>
<link href="https://fonts.googleapis.com/css?family=Raleway:500i|Roboto:300,400,700|Roboto+Mono" rel="stylesheet">
</head>
<body class="home">

<header class="row">
<div class="header-image"><?= $this->Html->image('cake.logo.svg') ?></div>
<div class="header-title">
<h1>Welcome to CakePHP <?= Configure::version() ?> Red Velvet. Build fast. Grow solid.</h1>
</div>
</header>
<div class="row">
<div class="columns large-12">
<?= $this->fetch('content') ?>
</div>
</div>
</body>

</html>

'fullBase' => true for create permanent link to resources.

Now create a file named "cake_pdf_download.ctp" under "Template/Pages/Pdf" directory with any content.

You are done, you browse "http://localhost/cake/pdf_download/invoice.pdf" then a pdf will be downloaded because we set "Configure::write('CakePdf.download', true);" if we set false here as "Configure::write('CakePdf.download', false);" then PDF will not be downloaded but will be rendered in browser itself.

Now go for save PDF to our server:

public function cakePdf()
{
$CakePdf = new \CakePdf\Pdf\CakePdf();
$CakePdf->template('cake_pdf', 'default');
$CakePdf->viewVars($this->viewVars);
$pdf = $CakePdf->write(APP . 'Files' . DS . 'Output.pdf');
echo $pdf;die();

}

And finally you are done CakePDF with DomPDF.

Friday, April 21, 2017

Generate PDFs in Laravel 5.x with Snappy & Wkhtmltopdf

At first we need to install Wkhtmltopdf on our server. To do so we need to add following lines under "require" section on composer.json file as follows:

For 32 bit server:

"require": {
    "h4cc/wkhtmltopdf-i386": "0.12.x",
    "h4cc/wkhtmltoimage-i386": "0.12.x"

And for 64 bit server:



"require": {
    "h4cc/wkhtmltopdf-amd64": "0.12.x",
    "h4cc/wkhtmltoimage-amd64": "0.12.x"
}

Now time to install wkhtmltopdf. Open command prompt and navigate to your project location and execute below command to install packages into your project:

composer update h4cc/wkhtmltopdf-i386 --lock
composer update h4cc/wkhtmltoimage-i386 --lock
Or you can download wkhtmltopdf from here. Or you can download also from here.

For windows you do not do anything above. Just download installer for windows version, install it in your machine, done.

After installation done, need to install "Laravel-Snappy", to do so add following to "composer.json" as follows:

"require": {
    "barryvdh/laravel-snappy": "0.3.x"
}

Open command prompt and navigate to your project location and execute below command to install packages into your project:

composer update barryvdh/laravel-snappy --lock

Next step is to add the line "Barryvdh\Snappy\ServiceProvider::class" to file "config/app.php" under the section "providers" as follows:

'providers' => [Barryvdh\Snappy\ServiceProvider::class]

Its time to add an alias, do the following in "config/app.php" under "aliases" section:

'aliases' => [

    'SnappyPDF' => Barryvdh\Snappy\Facades\SnappyPdf::class

Now copy "vendor/barryvdh/laravel-snappy/config/snappy.php" file to "/config" folder and modify as follows:

Location of binary is your wkhtmltopdf installation location. You must careful with the path.

Binary path will be as follows:

For Linux Server with project location: "binary" => ...
base_path('vendor/h4cc/wkhtmltopdf-amd64/bin/wkhtmltopdf-amd64')

For Linux Server with fixed location: "binary" => ...
"/usr/local/bin/wkhtmltopdf-amd64"

And for Windows with installation location: "binary" => ...
'"C:\Program Files\wkhtmltopdf\bin\wkhtmltopdf\bin\wkhtmltopdf.exe"'

<?php
return array(
'pdf' => array(
'enabled' => true,
'binary' => 'C:\PROGRA~1\wkhtmltopdf\bin\wkhtmltopdf.exe',
'timeout' => false,
'options' => array(),
'env' => array(),
),
'image' => array(
'enabled' => true,
'binary' => 'C:\PROGRA~1\wkhtmltopdf\bin\wkhtmltoimage.exe',
'timeout' => false,
'options' => array(),
'env' => array(),
)

);

Execute following command:
php artisan vendor:publish

Below is a code snippet to stream pdf to browser:

<?php
namespace App\Http\Controllers;

use SnappyPDF;
use Illuminate\Routing\Controller as BaseController;

class HomeController extends BaseController
{
public function pdf()
{
set_time_limit(60 * 5);
$d1 = array();
$d2 = array();

$pdf = SnappyPDF::loadView('home.pdf', compact('d1', 'd2'));

//Below line code will save pdf to "public" folder
//$pdf->save('Output.pdf'); die();

//Below line code to download pdf
//return $pdf->download('Output.pdf');

//Below line code will stream PDF to browser
return $pdf->stream('Output.pdf');
}

}

And thats it, you have integrated Wkhtmltopdf in your Laravel project using Snappy.

Generate PDF in CakePHP 3.x with CakePDF And Wkhtmltopdf

At first you need to install CakePDF to your project. Add "friendsofcake/cakepdf": "3.2.*" to "composer.json" file under "require" section as follows:

"require": {
"friendsofcake/cakepdf": "3.2.*"

}

Now open command panel and navigate to project directory and execute:

composer update friendsofcake/cakepdf --lock

Or you can direct execute the command "composer require friendsofcake/cakepdf" to install CakePDF. This command will install a suitable latest version to your project.

Above command will install CakePDF to your project.

Next step is to install wkhtmltopdf.

Download wkhtmltopdf from https://wkhtmltopdf.org/downloads.html.

By default CakePdf expects the wkhtmltopdf binary to be located in /usr/bin/wkhtmltopdf. If you are using wkhtmltopdf in Windows, remove any spaces in the path name. For example use C:/Progra~1/wkhtmltopdf/bin/wkhtmltopdf.exe (Your installation location).

Installation complete, now add the following line to "config/bootstrap.php" file:

Plugin::load('CakePdf', ['bootstrap' => true]);

Configure::write('CakePdf', [
'engine' => [
'className' => 'CakePdf.WkHtmlToPdf',
//'binary' => '/usr/bin/wkhtmltopdf', //LINUX
'binary' => 'C:\PROGRA~1\wkhtmltopdf\bin\wkhtmltopdf.exe', //WINDOWS
'options' => [
'print-media-type' => false,
'outline' => true,
'dpi' => 96
]
],
'pageSize' => 'Letter',
]);

Configuration options:

engine: Engine to be used (required), or an array of engine config options
- className: Engine class to use
- binary: Binary file to use (Only for wkhtmltopdf)
- options: Engine specific options. Currently only for WkHtmlToPdf, where the options are passed as CLI arguments, and for DomPdf, where the options are passed to the DomPdf class constructor.
crypto: Crypto engine to be used, or an array of crypto config options
- className: Crypto class to use
- binary: Binary file to use
pageSize: Change the default size, defaults to A4
orientation: Change the default orientation, defaults to portrait
margin: Array or margins with the keys: bottom, left, right, top and their values
title: Title of the document
delay: A delay in milliseconds to wait before rendering the pdf
windowStatus: The required window status before rendering the PDF
encoding: Change the encoding, defaults to UTF-8
download: Set to true to force a download, only when using PdfView
filename: Filename for the document when using forced download

Now we can do 3 things with our CakePDF

1. Download PDF

2. Stream PDF to browser

3. Save PDF to our server

Lets go for download & stream PDF:

Now go for save PDF to our server:

public function cakePdf()
{
$CakePdf = new \CakePdf\Pdf\CakePdf();
$CakePdf->template('cake_pdf', 'default');
$CakePdf->viewVars($this->viewVars);
$pdf = $CakePdf->write(APP . 'Files' . DS . 'Output.pdf');
echo $pdf;die();

}

And finally you are done CakePDF with wkhtmltopdf.

Get the Referer URL in CakePHP 3.X

Get Refer URL is not a big task in CakePHP now.

Just do the following to get Refer URL:

echo "Referrer URL=" . $this->referer('/') . "<BR>";

echo "Referrer URL=" . $this->referer('/', true) . "<BR>";

Which will output:

Referrer URL=http://localhost/cake/pages/database_check

Referrer URL=/pages/database_check

How to get complete current URL for Cakephp 3.x

Below are few steps described to get URL inside Cakephp 3.x controller as well as view file. You can get full URL and base URL and current URL inside Controller.

The very first thing is to include Router in your Controller as below:

use Cake\Routing\Router;

public function urls()
{
    echo "<div style=''>";
    echo "Current URL=" . Router::url(null, true);
    echo "<BR>Current URL=" . Router::url(null, false);
    echo "<BR>Current URL=" . $this->request->getUri();
    echo "<BR>Current URL=" . $this->request->getUri()->getPath();
    echo "<BR>Current URL=" . $this->request->getRequestTarget();
    echo "<BR>Full URL=" . Router::url("/", true);
    echo "<BR>Base URL=" . Router::url("/", false);
    die("</div>");
}

And output would like this:

Current URL=http://localhost/cake/pages/urls
Current URL=/cake/pages/urls
Current URL=http://localhost/pages/urls?id=20&name=Pritom
Current URL=/pages/urls
Current URL=/pages/urls?id=20&name=Pritom
Full URL=http://localhost/cake/
Base URL=/cake/

Thursday, April 20, 2017

How to remove a package from Laravel using composer?

Running the following command will remove the package from vendor (or wherever you install packages), composer.json and composer.lock. Change vendor/package appropriately.

It is important that you must remove all references from your project before execute the command below.

composer remove vendor/package

'C:\Program' is not recognized as an internal or external command

This seems to happen from time to time with programs that are very sensitive to command lines, but one option is to just use the DOS path instead of the Windows path. This means that C:\Program Files\ would resolve to C:\PROGRA~1\ and generally avoid any issues with spacing.

So your command would like below:

C:\PROGRA~1\.......

Friday, April 14, 2017

Laravel DOM-PDF include custom font

Laravel is a strong php based framework today. If you have not install dompdf yet, follow this link to install dompdf in your project. After installation of dompdf follow the below steps:

1. Create a folder named "fonts" under root folder.

2. Download your preferred font and put them in "fonts" directory.

3. Now need to add font as font-face in your css file as follows:

@font-face {
    font-family: cedarville-font-family;
    src: url("{{ asset('fonts/Cedarville-Cursive.ttf') }}");
    font-weight: normal;
}

4. Now you need to set font-family to see desired output, below is a full example of view page:

<!DOCTYPE html>
<html lang="en" >
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta content='width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no' name='viewport'>
    <title>First Laravel DOM PDF</title>
    <style>
        @font-face {
            font-family: cedarville-font-family;
            src: url("{{ asset('fonts/Cedarville-Cursive.ttf') }}");
            font-weight: normal;
        }
        @font-face {
            font-family: cedarville-font-family;
            src: url("{{ asset('fonts/Cedarville-Cursive.ttf') }}");
            font-weight: bold;
        }
    </style>
</head>
<body>
<div style="font-family: cedarville-font-family;">Test PDF</div>
</body>
</html>

5. And now your pdf would look like:

Laravel 5.x Install DOM-PDF

Laravel is a strong php based framework today. Its very important that we can create PDF using our application. Laravel & DOM-PDF both makes it easy. Just follow the following steps:

1. Add the following line to "composer.json" in "require" section:

"barryvdh/laravel-dompdf": "^0.8.0"

2. Open command prompt and navigate to project directory & execute following command:

composer update barryvdh/laravel-dompdf --lock

Above command will install dompdf in your project

3. After installation open "conig/app.php" and add following line to providers:

Barryvdh\DomPDF\ServiceProvider::class

4. Add the following line to create an alias for dompdf:

'PDF' => Barryvdh\DomPDF\Facade::class

5. Now create a folder named "fonts" in "storage" folder.

This folder will used to store font cache.

6. Now create a Controller as follows:

<?php
namespace App\Http\Controllers;

use PDF;
use Illuminate\Routing\Controller as BaseController;

class HomeController extends BaseController
{
    public function pdf()
    {
        $pdf = PDF::loadView('home.pdf');
        //return $pdf->download('review.pdf'); //Download        
        return $pdf->stream('review.pdf'); //Stream    
    }
}
?>

7. Now create a view under "resource/views/home" named "pdf.blade.php" with following contents:

<!DOCTYPE html>
<html lang="en" >
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta content='width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no' name='viewport'>
</head>
<body>
<h1>Test PDF</h1>
</body>
</html>

8. Add the following line to "routes/web.php":

Route::get('/pdf', "HomeController@pdf");

9. Now browser {{Base_Url}}/pdf to view your pdf:

10. You are done.

Saturday, April 8, 2017

Radar Charh with multiple value axis - amCharts

AmChart is now very popular to display data using charts. One of them different charts Radar Chart is most used chart to display graphical data. Its very easy to plot data in radar chart, but we sometimes need multiple radar on same chart. To do so we need to do some extra java-script coding as follows. Below code will also do some extra work such change color of radar as configured.

JavaScript Code:

var chart = AmCharts.makeChart("chartdiv", {
    "type": "radar",
    "theme": "light",
    "addClassNames": true,
    "dataProvider": [{
        "title": "Mango",
        "weight": 100, "count": 1400, "color": "red"
    }, {
        "title": "Banana",
        "weight": 125, "count": 1750, "color": "green"
    }, {
        "title": "Apple",
        "weight": 220, "count": 2850, "color": "blue"
    }, {
        "title": "Blackberry",
        "weight": 200, "count": 2150, "color": "hotpink"
    }, {
        "title": "Gooseberry",
        "weight": 123, "count": 2650, "color": "black"
    }, {
        "title": "Grapes",
        "weight": 98, "count": 1670, "color": "orange"
    }],
    "valueAxes": [{
        "axisTitleOffset": 20,
        "minimum": 0,
        "axisAlpha": 0.15
    }, {
        "id": "v2",
        "axisTitleOffset": 20,
        "minimum": 0,
        "axisAlpha": 0,
        "inside": true
    }],
    "startDuration": 0.2,
    "graphs": [{
        "balloonText": "[[value]] Kg of [[title]] per year",
        "bullet": "round",
        "lineThickness": 2,
        "valueField": "weight"
    }, {
        "balloonText": "[[value]] piece of [[title]] per year",
        "bullet": "square",
        "lineThickness": 2,
        "valueField": "count",
        "valueAxis": "v2"
    }],
    "categoryField": "title",
    "listeners": [{
        "event": "rendered",
        "method": updateLabels
    }, {
        "event": "resized",
        "method": updateLabels
    }],
    "export": {
        "enabled": false
    }
});

function updateLabels(event) {
    try {
        var labels = event.chart.chartDiv.getElementsByClassName("amcharts-axis-title");
        for (var i = 0; i < labels.length; i++) {
            try {
                var color = event.chart.dataProvider[i - event.chart.dataProvider.length + 1].color;
                if (color !== undefined) {
                    labels[i].setAttribute("fill", color);
                }
            } catch (e) {}
        }
    } catch (e) {}

    var x = event.chart.chartDiv.getElementsByClassName("amcharts-graph-line");

    for (var i = 0; i < x.length; i++) {
        try {
            if (i % 2 != 0) {
                var _g = x[i];
                var _p = _g.getElementsByTagName("path");
                _p[0].setAttribute("stroke", "blue");
            }
        }
        catch (e) {}

        var _c = event.chart.chartDiv.getElementsByClassName("amcharts-graph-bullet");
        try {
            for (var c = _c.length / 2; c < _c.length; c++) {
                _c[c].setAttribute("fill", "blue");
            }
        }
        catch (e) {}
    }
}

HtmlCode:

<script src="//www.amcharts.com/lib/3/amcharts.js"></script>
<script src="//www.amcharts.com/lib/3/radar.js"></script>
<script src="//www.amcharts.com/lib/3/themes/light.js"></script>

<div id="chartdiv"></div>

<style type="text/css">
    #chartdiv {
        width: 100%;
        height: 500px;
    }
</style> 

And output would be like below image:







If you need you can download related resources from this link.

Friday, April 7, 2017

Git Bash Inside PhpStorm

It would be very helpful if we can use Git Bash inside PhpStorm itself.
The fact is, though, that it's a terminal client and that's how PhpStorm thinks of it. To implement it, you have to go to:

>> File -> Settings -> Tools -> Terminal

Once you're there, here are the steps necessary to enable Git Bash in the Terminal dialogue.
Now you can browse git.sh file from your git installation location.
That would be like below path:
C:\Program Files\Git\bin\sh.exe and it may differ in your machine

And then need to bound the path by double quotation like:
"C:\Program Files\Git\bin\sh.exe"

And add the following line after that "-login -i"

And the final output be like:
"C:\Program Files\Git\bin\sh.exe" -login -i

Your set-up is completed, now press Alt+F12 to see git window inside PhpStorm.

And your are done.