jahvi

<admin>
    <routers>
        <custom_module>
            <use>admin</use>
            <args>
                <module>custom_module</module>
                <frontName>custom_module</frontName>
            </args>
        </custom_module>
    </routers>

jahvi

<admin>
    <routers>
        <adminhtml>
            <args>
                <modules>
                    <custom_module after="Mage_Adminhtml">CustomModule_Adminhtml</custom_module>
                </modules>
            </args>
        </adminhtml>
    </routers>

jahvi

<?php
$collection->addFieldToFilter('(field1 – field2)', array('eq' => 3));
// or...
$collection->addFieldToFilter('`field`', array('eq' => 3));

jahvi

<?php
$expression = '(field1 - field2)';
$condition = $this->_getConditionSql($expression, array('eq' =>3 ));
$this->_select->where($condition);
// or..
$collection->addFieldToFilter('field', array('eq' => 3));

jahvi

<global>
    <models>
        <custom_module>
            <class>Custom_Module_Model</class>
            <resourceModel>module_mysql4</resourceModel>
        </custom_module>
        <module_mysql4>
            <class>Custom_Module_Model_Mysql4</class>
            <entities>
                <custom_module>

jahvi

<global>
    <models>
        <custom_module>
            <class>Custom_Module_Model</class>
            <resourceModel>module_resource</resourceModel>
        </custom_module>
        <module_resource>
            <class>Custom_Module_Model_Resource</class>
            <entities>
                <custom_module>

jahvi

<?php

/* @var $installer Mage_Core_Model_Resource_Setup */
$installer = $this;

$installer->startSetup();

$installer->run("

-- DROP TABLE IF EXISTS {$this->getTable('cms_block')};

jahvi

<?php

/* @var $installer Mage_Core_Model_Resource_Setup */
$installer = $this;

$installer->startSetup();

/**
 * Create table 'cms/block'
 */

jahvi

<?php

/* Store or website code */
$mageRunCode = isset($_SERVER['MAGE_RUN_CODE']) ? $_SERVER['MAGE_RUN_CODE'] : '';

/* Run store or run website */
$mageRunType = isset($_SERVER['MAGE_RUN_TYPE']) ? $_SERVER['MAGE_RUN_TYPE'] : 'store';

Mage::run($mageRunCode, $mageRunType);

jahvi

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# Explain why this change is being made
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