Joomla! Documentation - User contributions [en]

API15:JHTML/image

2012-07-30T11:26:30Z

Peerke: typo

===Description===
Write a </img> element

<span class="editsection" style="font-size:76%;">
<nowiki>[</nowiki>[[Description:JHTML/image|Edit Descripton]]<nowiki>]</nowiki>
</span>

{{Description:JHTML/image}}

===Syntax===
<source lang="php">image($url, $alt, $attribs=null)</source>

{| class="wikitable"
|-
!Parameter Name
!Default Value
!Description
|-
| $url
|
| The relative or absoluete URL to use for the src attribute
|-
| $alt
|
| The target attribute to use
|-
| $attribs
| null
| An associative array of attributes to add
|}

===Defined in===
libraries/joomla/html/html.php
===Importing===
<source lang="php">jimport( 'joomla.html.html' );</source>

===Source Body===
<source lang="php">
function image($url, $alt, $attribs = null)
{
if (is_array($attribs)) {
$attribs = JArrayHelper::toString( $attribs );
}

if(strpos($url, 'http') !== 0) {
$url = JURI::root(true).'/'.$url;
};

return '<img src="'.$url.'" alt="'.$alt.'" '.$attribs.' />';
}
</source>

<span class="editsection" style="font-size:76%;">
<nowiki>[</nowiki>[[SeeAlso:JHTML/image|Edit See Also]]<nowiki>]</nowiki>
</span>
{{SeeAlso:JHTML/image}}

===Examples===
<CodeExamplesForm />
<dpl>
noresultsheader=\n
category=image
category=JHTML
category=CodeExample
category=MethodExample
include=*
format= ,,,
</dpl>

Archived talk:Developing a MVC Component/Adding backend actions

2012-01-26T10:58:22Z

Peerke:

It's not clear to me where the word "helloworld" refers to in these examples. Can you please clarify when 'helloworld' refers to the component,controller,model,table,view or form? While following this, I've changed the name of my component, and when running this I get a 'call to member function getTable() on non-object'. It seems that I used the wrong name somewhere, but I have no idea where.

We're also introducing JForms and JFields. These are powerful and important, and warrant some richer explanation.

== Attention! ==

There is a change in /admin/views/helloworlds/tmpl/default_body.php that isnt mentioned on this page but is present in the archive file.

== Model subtlety ==

Note that the model loaded in the getModel function by the HelloWorlds controller (admin/controllers/helloworlds.php) is NOT the HelloWorlds model; it is instead the HelloWorld model. The HelloWorlds model (HelloWorldModelHelloWorlds) extends JModelList, which has no delete function. The HelloWorld model (HelloWorldModelHelloWorld) extends JModelAdmin, which has the delete function needed to delete items.

== Naming confusion ==
I agree with the first user. helloworld is an abused word in the example. We could call the table greetings, so the models (greetings and greeting) and so on. Without using different and clear name the reader cannot understand the mechanism of the MVC pattern. There is also a lack of documentation, e.g. when we create the form in admin/models/forms/helloworld.xml we should give a link or something to possible values of the fields used.

== Joomla 2.5 ==
The counting of the checkboxes are not working any more in Joomla 2.5. Does someone have a solution to this?

Package

2011-12-22T10:13:10Z

Peerke: /* What is a package? */

== What is a package? ==

A package is a extension that is used to install multiple extensions in one go. This is used if you have for example a component and a module that are depending on each other. Combining them in a package will let the user install and uninstall both extensions in one go. Package extensions can be used with Joomla [[File:Compat icon 1 6.png]] and higher.

== How do I create a package? ==

A package extension is created by zipping all zip files of the extensions together with a xml manifest file. If you have a helloworld component and module you make the following tree in your zipfile:

-- pkg_helloworld.xml
-- packages <dir>
|-- com_helloworld.zip
|-- mod_helloworld.zip

The pkg_helloworld.xml could have the following contents:

<?xml version="1.0" encoding="UTF-8" ?>
<extension type="package" version="1.6">
<name>Hello World Package</name>
<packagename>helloworld</packagename>
<version>1.0.0</version>
<url>http://www.yoururl.com/</url>
<packager>Hello World Package Team</packager>
<packagerurl>http://www.yoururl.com/</packagerurl>
<description>Example package to combine multiple extensions</description>
<update>http://www.updateurl.com/update</update>
<files folder="packages">
<file type="component" id="com_helloworld" >com_helloworld.zip</file>
<file type="module" id="mod_helloworld" client="site">mod_helloworld.zip</file>
</files>
</extension>

When you zip this and try to install it, you will see that every extension will be installed. Also the package will be visible in the extension list to uninstall all the extension of this package.

Package

2011-12-22T09:15:30Z

Peerke: Explaining how to create a package in Joomla

== What is a package? ==

A package is a extension that is used to install multiple extensions in one go. This is used if you have for example a component and a module that are depending on each other. Combining them in a package will let the user install and uninstall both extensions in one go. This can be used in Joomla 1.6 and higher.

== How do I create a package? ==

A package extension is created by zipping all zip files of the extensions together with a xml manifest file. If you have a helloworld component and module you make the following tree in your zipfile:

-- pkg_helloworld.xml
-- packages <dir>
|-- com_helloworld.zip
|-- mod_helloworld.zip

The pkg_helloworld.xml could have the following contents:

<?xml version="1.0" encoding="UTF-8" ?>
<extension type="package" version="1.6">
<name>Hello World Package</name>
<packagename>helloworld</packagename>
<version>1.0.0</version>
<url>http://www.yoururl.com/</url>
<packager>Hello World Package Team</packager>
<packagerurl>http://www.yoururl.com/</packagerurl>
<description>Example package to combine multiple extensions</description>
<update>http://www.updateurl.com/update</update>
<files folder="packages">
<file type="component" id="com_helloworld" >com_helloworld.zip</file>
<file type="module" id="mod_helloworld" client="site">mod_helloworld.zip</file>
</files>
</extension>

When you zip this and try to install it, you will see that every extension will be installed. Also the package will be visible in the extension list to uninstall all the extension of this package.

Talk:Library

2011-12-22T08:56:30Z

Peerke: Created page with "If someone can put an example here, that would be great."

If someone can put an example here, that would be great.