Magento 1.7 - 自定义模块，通话功能

Question

I created a custom module where i want to show some information about an product. In config.xml i added

<blocks>
    <mymodule>
        <class>Namespace_MyModule_Block</class>
    </mymodule>
</blocks>

The block class extends Mage_Catalog_Block_Product_View. But i can't call

$this->getProduct()

in the *.phtml file according to the module (mymodule.phtml). The xmls are configured well, so i can call the .phtml with

<?php echo $this->getChildHtml('mymodule'); ?>

but $product is always null. According to the configuration in modules config.xml $this->getProduct() should access Mynamespace_MyModule_Block_View and call the function. I tried with a dummy function which simply returns a string value, but this doesn't work either.

I hope someone can give me a hint weather there is some missing or wrong configuration.

EDIT 1: Content of layout.xml

<?xml version="1.0"?>
<layout>
    <catalog_product_view>
        <reference name="product.info">
            <block type="core/template" name="product_available_price" as="product_available_price"
                   template="productavailable/price.phtml"/>
            <block type="core/template" name="product_available_info" as="product_available_info"
                   template="productavailable/info.phtml"/>
            <block type="core/template" name="product_available_button" as="product_available_button"
                   template="productavailable/button.phtml"/>
        </reference>
    </catalog_product_view>
</layout>

In button.phtml i call $this->getProduct() and the method is in Mynamespace_MyModule_Block_Button

Answer 1

in one of my custom module i have used like below

class Yournamespace_Brand_Block_View extends Mage_Catalog_Block_Product_Abstract

And i have also used all product features with magento default functionality like

pagination and toolbar etc.

Edit

Block type change from core/template to productavailable/button

 <block type="productavailable/button" name="product_available_button" as="product_available_button"                       template="productavailable/button.phtml"/>

hope this will sure solve your issue.

let me know if i could help you more.