Showing posts with label Joomla. Show all posts
Showing posts with label Joomla. Show all posts

Some useful Joomla Codes and Tricks

Redirect with some message
$app = JFactory::getApplication();
$link = JRoute::_('index.php?option=com_users&view=login');
$msg = JText::_('JERROR_ALERTNOAUTHOR');
$app->redirect($link, $msg, 'warning');

Access check: If this user is allowed to access the component?
if (!JFactory::getUser()->authorise('yourcomponentname.yourdefindaccess', 'com_yourcomponentname')) {
     //do actions like raise error or redirect
}

Raise warning or error
return JError::raiseWarning(404, JText::_('JERROR_ALERTNOAUTHOR'));

SEF redirect
$mainframe = JFactory::getApplication();
$mainframe->redirect(JRoute::_("index.php?option=com_yourcomponentname&view=yourcomponentview", false));

Transaction in joomla
$db = JFactory::getDbo();
try {
      $db->transactionStart();
      //code here
      $rolledBack = $db->transactionCommit();
} catch (Exception $e) {
     $db->transactionRollback();
}

Check if SEF url is on and get menu alias if on
$conf = &JFactory::getConfig();
if( $conf->get('sef') == 1 ){
      $menu = JSite::getMenu();
      $alias = $menu->getItem(483)->alias;
}
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Creating a Joomla MVC Component

Joomla is very popular Php CMS and its very easy to learn and use. It has some very nice features like admin and front both responsive with bootstrap framework. Nice extendable structure. You can develop your own components, modules, templates and plugins to fulfill your requirements. Developing a joomla mvc component is not an easy task as its very complex than template, plugin or module. Today, I'm going to discuss about how to make your own custom component. Before proceed I would like to mention features our new made component will have-

- Front end
- Back end
- Language Translations
- ACL Support
- Custom param in option settings under Joomla Administrator back end
- Adds our component in back end component drop down menu with sub menu
- Support for menu item type when adding menu items
- Install-able
- Multiple controllers, models and views


However if you don't want to create from scratch, just download one of below zip and customize with your needs. Use these archives for Joomla v-3+

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Create a Joomla Template from scratch



HOW TO CREATE A JOOMLA TEMPLATE FROM SCRATCH?

Want a customized joomla template for your business needs? It's so easy to build a template of your choice rather than paying thousands for it. So lets start now.

To make a joomla template you will need at least two files,

1.templateDetails.xml which is mainly configuration file containing information like autor name, email, template version, folders and file names and module names (we'll discuss it leter).

2.index.php which is entry point for all pages
These are basic files needed to create a joomla template, but additionally you will need some more files to make a beautiful and effective template such as css, images, language, javascript, html etc.
Now lets create our xml file 

<?xml version="1.0" encoding="utf-8"?>
<extension client="site" type="template" version="3.0">
<name>template_name</name>
<creationdate>29 January 2014</creationdate>
<author>write Your name here</author>
<authoremail>write your email here</authoremail>
<authorurl>your website url here</authorurl>
<copyright>Copyright here. All rights reserved.</copyright>
<license>License here</license>
<version>3.0.1</version>
<description>TPL_NAME_XML_DESCRIPTION</description>
<files>
<filename>index.html</filename>
<filename>index.php</filename>
<filename>templateDetails.xml</filename>
<filename>template_preview.png</filename>
<filename>template_thumbnail.png</filename>
<filename>favicon.ico</filename>
<filename>component.php</filename>
<filename>error.php</filename>
</files>
<positions>
<position>debug</position>
<position>top</position>
<position>position-2</position>
<position>position-3</position>
<position>position-4</position>
<position>position-5</position>
<position>position-6</position>
<position>banner</position>
<position>left-navigation</position>
<position>position-login</position>
<position>position-footer</position></positions>
</extension>

As you can see additional files are here like index.html (just to prevent direct access of this folder) , template_preview.png and template_thumbnail.png to show in administrator panel. Here several positions are defined which we'll use in our index.php file.

Your xml is ready, now create your index.php file.

<?php defined( '_JEXEC' ) or die( 'Restricted access' );?>
<!DOCTYPE html>
<html xml:lang="language; ?>" lang="language; ?>" >
<head>
<jdoc:include type="head" />
</head>
<body>
<jdoc:include type="modules" name="top" />
<jdoc:include type="modules" name="banner" />  
<jdoc:include type="modules" name="left-navigation" />
<jdoc:include type="component" />
<jdoc:include type="modules" name="footer" />
<jdoc:include type="modules" name="position-3" />
</body>
</html>

As you see we have included defined( '_JEXEC' ) or die( 'Restricted access' );
just for security reasons to prevent direct access. is here to tell browsers and crawlers that its a html5 web page. 

body{padding:0;margin:0;font-family:"arial";
font-size:12px;color:#5d6060;background-color:#fff}
a{text-decoration:none;outline:0}
a:focus,a:active{outline:0}
img{border:0;outline:0}
.container{height:auto;width:1044px;margin-right:auto;margin-left:auto}
.container_sub{height:auto;width:1044px;float:left}
#header_main{height:auto;width:1044px;float:left}
#header{height:118px;width:1044px;float:left}
.header_top{height:auto;width:1044px;float:left}
#logo{height:75px;width:231px;float:left;margin-top:4px}

Your template is ready now but to work with joomla you have to upload it under templates folder. After uploading it to templates folder log in to your joomla administrator and open extensions -> Templates manger. Here you will not be able to see your template as you expected. This is because it requires one more step, to install the template. Ok, go to Extensions -> Extension Manager then click Discover tab now click on discover icon on the top-right corner of the page. It will search all the extensions available in your joomla installation, here you will be able to see your template name, select it and click on install icon on the top-right corner of the page. This will install your template. Now you are done.
Go to Extensions-> Template manager , here you can see your installed template.

That's it!

In next chapter we'll make a beautiful responsive template using Twitter Bootstarp. Happy Learning!

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