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    Magento Block Series – Day One

    Magento Blocks are the soul of magento template system , Any magento template system if full of block elements .

    What is Magento Block 

    Blocks are basically combination of three entities

    ★ Class

    ★ Phtml Filles

    ★ XML

    Here is the sample declaration for the block


    As you can see in the above block code  here the class name is inside the type

    Type = Php class(Mage_Webkul_Block_Slideshow) where all the function are defined which are used in phtml file or view file inside webkul/slideshow.phtml

    name – is a unique identifies for this particular block


    template = file location for the view file

    Best thing with blocks are you can call those block inside cms pages or under static block of magento  . using  curly braces e.g

    {{block type=”webkul/slideshow” template=”webkul/slideshow”}}

    [stextbox id=”info”]In Magento2 we will use full name of the class instead of type e.g [/stextbox]


    Example : 

    suppose that i have a phtml file (magento view file new.phtml)  and i want to call this phtml file as a block  in magento default template .

    i have added following code on new.phtml at app/design/frontend/default/default/template/Sleekaccordian


    now i am going to call this block using following block code from poll.xml ( location app/design/frontend/base/default/layout)

    and added the following code in poll.xml under <deafult>


    And here is the output of the block

     

    Dont worry about reference thing will explain in details in next series of the magento blocks .

    You can also enable template path hints and magento block hints from magento admin (under system->configuration->developer->advance->developer)

     Play With Blocks

    You may change the location of the block . e.g suppose that you want to change the location of the block from left to right . so you need to change only reference code

     

    also suppose that if you want to change the order of the block e.g you want your block after the newsletter block , In this case magento provide before and after handlers  which we can call in our block code


    and here is the output

    Another note about the type attribute, its not actually a directory/file structure, rather, it’s a URI that is mapped with the Magento autoloader. “Core” relates back to the Mage_Core_Block_Core class (under the app/code/core/Mage/Core directory) and then the info after the slash relates to the folders inside of that directory. So type=”core/template” resolves to this class Mage_Core_Block_Core_Template which is located at app/code/core/Mage/Core/Block/Template.php. All the type attribute is doing is telling Magento which methods you need to load inside of your block.

    . . .

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