Magento 1.9 Block Override Not Working – Fix Guide

blocksfrontendmagento-1.9overrides

i try rewrite my block on app/local/lesson7/test/block but its not working
my modules xml (lesson7.xml)

<?xml version="1.0"?>
<config>
    <modules>
        <Lesson7_Test>
            <active>true</active>
            <codePool>local</codePool>
            <depends>
                <Mage_Catalog />
            </depends>
        </Lesson7_Test>
    </modules>
</config>

my layout on app/design/frontend/tutorial/default/layout/lesson7.xml

<?xml version="1.0"?>
<layout version="0.1.0">
  <default>
      <reference name="content">
      </reference>
  </default>
  <lesson7_index_index>
       <reference name="content">
            <block type="lesson7/monblock" name="afficher_monbloc" template="lesson7/afficher.phtml" />
       </reference>
  </lesson7_index_index>
</layout>

my template on app/design/frontend/tutorial/default/template/lesson7/afficher.phtml

<?php

    echo $this->methodblock();

?>

my config on app/local/etc/lesson7/test/etc/config.xml

<?xml version="1.0"?>
  <config>
     <modules>
        <Lesson7_Test>
          <version>1.0.0</version>
        </Lesson7_Test>
     </modules>
 <frontend>
   <routers>
      <lesson7>
          <use>standard</use>
          <args>
             <module>Lesson7_Test</module>
             <frontName>lesson7</frontName>
          </args>
       </lesson7>
   </routers>
   <layout>
     <updates>
          <lesson7>
               <file>lesson7.xml</file>
           </lesson7>
      </updates>
  </layout>
</frontend>
    <global>
      <blocks>
          <catalog>
              <rewrite>
                  <product_view>
                      Lesson7_Test_Block_Product_View
                  </product_view>
              </rewrite>
          </catalog>
        <lesson7>
          <class>Lesson7_Test_Block</class>
        </lesson7>
      </blocks>
    </global>
</config>

my block on app/local/lesson7/test/block/Monblock.php

<?php
class Lesson7_Test_Block_Monblock extends Mage_Core_Block_Template
{
     public function methodblock()
     {
         return 'Lesson 7 Block !!!' ;
     }
}

and my rewrite app/etc/lesson7/test/block/product/View.php

<?php
class Lesson7_Test_Block_Product_View extends Mage_Core_Block_Product_View
{
    public function afficherLesInfo()
    {
        return 'afficher les info !!!';
    }
}

UPDATE
is it possible his error was in my new block? is it true rewrite of models/resource can only be summoned by Mage such as Mage:: getModel (), Mage:: getResourceModel (), Mage:: Helper (), Mage:: getSingletonBlock () ?
please your help, thank you 🙂

Best Answer

Your extending block is wrong. There is no Mage_Core_Block_Product_View.php class

Replace this below content: Lesson7/Test/Block/Product/View.php (you should have all folder/file's first letter capital)

<?php
class Lesson7_Test_Block_Product_View extends Mage_Catalog_Block_Product_View
{
    public function afficherLesInfo()
    {
        return 'afficher les info !!!';
    }
}

I also doubt you are not placing your file in right place.

Check where is your View.php file? It should be in app/code/[codepool : community or local]/Lesson7/Test/Block/Product folder.

All your module files/folders should be inside this folder:

app/code/[codepool : community or local]
            |_Lesson7
                 |_Test
                    |_ Block
                    |_ etc

Hope this helps.

[UPDATE]

If you want to test then go to design/your_theme/template/catalog/product/view.phtml and have this code: <?php echo $this->afficherLesInfo();?>. And now go to any simple product and see if this appears. If it does then you have successfully rewritten the block.

Related Solutions

Magento 1.8 Custom Block Module – How to Create

I find the whole XML thing difficult so I am sympathetic to your cause here.

It looks to me like there is a discrepancy with your class name and your block XML

class Crusader_CLHomePage_Block_Qwerty extends Mage_Core_Block_Template

and

    <block type="core/template" name="homepage" template="crusader/home.phtml">
        <block type="crusaderhome/qwerty" name="homeads" as="homeads" template="crusader/homeads.phtml" />
    </block>

Let's start with the block type and work backward. I think here I would expect to see something like

<block type="crusader_home/qwerty" ...

and that type would refer Magento to the class

Crusader_Home_Block_Qwerty extends Mage_Core_Block_Template

Continuing to work backward on this tack, the file app\code\local\Crusader\CLHomePage\etc\config.xml would need to be modified to something like

<global>
    <blocks>
        <crusader_home>
            <class>Crusader_Home_Block</class>
        </crusader_home>
    </blocks>
</global>

It points Magento to all classes starting 'Crusader_Home_Block_*'. And now I think you need to rename your module Crusader_Home instead of Crusader_CLHomePage and change the folder names accordingly...

AND / BUT I strongly recommend you change your module name. Only ever use one capital letter at the start of the module name not three and don't put capital letters in the middle of the name either.

You may want to look into some of the tools available for generating modules. I find them very useful for avoiding typing errors. I use this one by the very clever people at MGT Commerce (it has simplicity on its side) and this one is all-encompassing and an astonishing piece of coding by Silk Software.

***EDIT following comments below

Additionally based on the error log I think the problem is that Magento can't find your class file. So double-check the caches are refreshed or off, particularly XML cache, and that the compiler is off or re-enabled.

Overrides – How to Rewrite a 3rd Party Module’s Block

Replace

   <blocks>
        <custommenu>
            <rewrite>
                <navigation>Creed_CustomMenu_Block_Navigation</navigation>
            </rewrite>
        </custommenu>
    </blocks>

With

    <blocks>
        <catalog>
            <rewrite>
                <navigation>Creed_CustomMenu_Block_Navigation</navigation>
            </rewrite>
        </catalog>
    </blocks>

in your new module.
This is needed because the block WP_CustomMenu_Block_Navigation is not instantiated using createBlock('custommenu/navigation'). It is instantiated using createBlock('catalog/navigation')...because it rewrites the Mage_Catalog_Block_Navigation block.

[Edit]
And in the app/etc/modules/Creed_CustomMenu.xml file make your extension depend on the WP_CustomMenu extension. This way it will be loaded after it.

Best Answer

Related Solutions

Magento 1.8 Custom Block Module – How to Create

Overrides – How to Rewrite a 3rd Party Module’s Block

Related Topic