Develop advance joomla! MVC Component for version 3

Develop Advance Joomla! MVC Component
for version 3.x
Gunjan Patel
Sr. PHP Developer
Joomla! Bug Squad Member
Joomla! SQL Optimisation team coordinator
Google Summer Of Code 2014 Mentor
Joomla! User Network Ahmedabad

Meet my Joomla! Family
gunjan.ce2009@gmail.com

Time to play with the Database
Joomla! User Network Ahmedabad Gunjan Patel @ergunjanpatel

Create two files:
1. admin/sql/install.mysql.utf8.sql
2. admin/sql/updates/mysql/0.0.6.sql
Important:
#__schemas table will be used
for upgrades

Adding a new field type: type="helloworld"
Field file path
Field Custom Type:
helloworld
Notice that it was
Before list

Let’s create field at admin/models/fields/helloworld.php
Parent field type
Same as filename
File Name should be same as
Field type name
Class name prefix
Should be same as filename

Continue with… admin/models/fields/helloworld.php
Overriding parent class for
HTML select list options.
Get Database Object
Joomla Query Language
functions
Looping to create options array
JHTML options type value text

Display the chosen message from field type in
menu using Database Table

Create the admin/tables/helloworld.php file
Table Name
Primary Key

Modify the site/models/helloworld.php file
Return the table instance
Add new getTable function

Modify the site/models/helloworld.php file
Update getMsg function to get
Message from Database
Get message id from request.
Notice that here we are not using
$_POST or $_GET
Load table data from auto increment id

Update in helloworld.xml
ZIP it

Develop Basic Backend

Create the admin/helloworld.php file

Create the general controller admin/controller.php file
Set Default view of
component
Component prefix.
Typically name of
component

Create the view admin/views/helloworlds/view.html.php file
Parent ClassView NameComponent
Name as class prefix
Call Model get Item
function and pagination
function to support
pagination

Create the layout admin/views/helloworlds/tmpl/default.php file

Create the sub-layout
admin/views/helloworlds/tmpl/default_head.php file

admin/views/helloworlds/tmpl/default_body.php file

admin/views/helloworlds/tmpl/default_foot.php file

Create the Model admin/models/helloworlds.php file
Parent class for listing
Function of joomla.
getListQuery function
return query object

Review helloworld.xml
ZIP it

• Language files naming conventions:
–For components
• en-GB/en-GB.com_helloworld.ini
–For Menus
• en-GB/en-GB.com_helloworld.sys.ini
Adding Language Translation Files

Language File Naming Pattern
For Example:
en-GB : Language code for English (UK)
gu-IN : Language code for Gujarati (India)
hn-IN : Language code for Hindi (India)
<language code>-<country code>

For Example:
en-GB : Language code for English (UK)
gu-IN : Language code for Gujarati (India)
hn-IN : Language code for Hindi (India)
<language code>-<country code>
<language code>-<country code>.com_<component_name>.[type].ini
For Example:
en-GB.com_helloworld.ini
gu-IN.com_helloworld.ini
----------------------------------------
en-GB.com_helloworld.sys.ini
Gu-IN.com_helloworld.sys.ini

Language String Pattern
For Example:
COM_HELLOWORLD="Hello World!"
COM_HELLOWORLD_DESCRIPTION="This is the Hello World description"
COM_HELLOWORLD_HELLOWORLD_VIEW_DEFAULT_TITLE="Hello World"
COM_HELLOWORLD_HELLOWORLD_VIEW_DEFAULT_DESC="This view displays a selected message"
COM_HELLOWORLD_MENU="Hello World!"
<language_key>=“<language_string_value>”

Language File Location Options in
helloworld.xml file

or simply in ROOT

Update helloworld.xml
ZIP it

Any Questions?

Develop advance joomla! MVC Component for version 3

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Develop advance joomla! MVC Component for version 3