Joomla two times Development study notes, Joomla Learning notes _php Tutorial

Joomla two times Development study notes, Joomla study notes

• Joomla directory Structure

/administrator managing the path to the background
/cache is the cache directory
/components is the component (component) directory
/includes is an important directory with all the scripts, functions, and so on that Joomla needs to run.
/language is the site language directory.
/plugins is the extension (trigger) directory.
/modules directory is the storage module program, Joomla has defined more than 10 module locations, such as header, footer, left, right, debug, User1, Advert2, and so on.
/templates template directory, where each subdirectory corresponds to a template
/libraries Class Package Directory, all important class files
/logs log directory, storing generated log script files
/images Picture Catalogue
The/media directory is where various media files are stored.
/XMLRPC XML Remote method invocation, using XML as the medium to invoke the remote method
/tmp Temp directory

• joomla! Component Structure

All components of joomla! follow a specific naming scheme. Each system component has a unique name, and the name cannot include spaces.
The code is divided into two folders, and the folder begins with Com_, followed by the name of the component. Eg: the component is called books. So, you're going to create two com_books folders with the same name.
When the component is loaded in the foreground, joomla! will look for the file component name. php

Front desk components, directory com_books, file books.php.
Put it in the background administrator/components, directory com_books, file admin.books.php.

• Joomla! Interface Introduction

Database operations: Connecting databases-executing SQL statements-querying data

1) Database Operation Connection Database
$db =& jfactory::getdbo ();
2) Execute SQL statement
$sql = "SELECT * from #_tags";
$db->execute ($sql);
3) query data
$sql = "SELECT * from #_tags";
$db->setquery ($sql);
$rows = $db->loadobjectlist ();
foreach ($rows as $row) {
Echo $row->tag;
}

Session Operation: Calling session

1) Get the value of session
$session =&jfactory::getsession ();
$name = "Session_name";
$sValue = $session->get ($name);
2) Set the value of session
$session =japplication::_createsession ();
$name = "Session_name";
$value = "Alex";
$session->set ($name, $value);

joomla! Database Common table

Article categories
Jos_categories
Jos_sections

joomla! components, modules, plugins
Jos_components
Jos_modules
Jos_plugins

Article
Jos_content

Menu
Jos_menu

User and Login
Jos_groups
Jos_session
Jos_users

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