Set Magento Config Data For Script Duration Only

Question

Is it possible to set a Magento configuration option for the duration of a single script only?

I'm trying to programatically and recursively create orders in Magento. I want to enable the Flat Rate Shipping method and set the cost to 5.00, for example. Once the script has run, I want the value to be set via persistence as usual from the db.

I am using a basic function to determine which iteration we're on. If it's the first, set the shipping method. The script is called via AJAX.

...
try {
    if (isFirstIteration($_iteration)) {
        $_flatShipping = Mage::getStoreConfig('carriers/flatrate/active', $_storeId);
        if ($_flatShipping == 0) {
            Mage::getConfig()->setNode('carriers/flatrate/active', '1');
            Mage::getConfig()->setNode('carriers/flatrate/price', '5.00');
        }
    }
} catch(Exception $e) {
    $html .= '<div class="error">Error: ' . $e->getMessage() . '</div>';
}
...

That does not work; Magento throws the exception Please specify a shipping method on quote save.

I can, however, set the shipping method in the db. This does work:

...
try {
    if (isFirstIteration($_iteration)) {
        $_flatShipping = Mage::getStoreConfig('carriers/flatrate/active', $_storeId);
        if ($_flatShipping == 0) {
            $_mageConfig = new Mage_Core_Model_Config();
            $_mageConfig->saveConfig('carriers/flatrate/active', '1', 'default', 0);
            $_mageConfig->saveConfig('carriers/flatrate/price', '5.00', 'default', 0);
            Mage::getConfig()->reinit();
            Mage::app()->reinitStores();
        }
    }
} catch(Exception $e) {
    $html .= '<div class="error">Error: ' . $e->getMessage() . '</div>';
}
...

I'm guessing Magento's setNode doesn't work the way I think it does. Any info would be helpful, except bashing me for creating orders like this :) Thanks.

Answer 1

The problem with setNode() is that it does not refresh the config cache in Mage_Core_Model_Store. This is not the Magento cache but a PHP array, populated at runtime on store initialization for store specific configuration and when the configuration value is read for global or website specific configuration.

So setNode() does not work for store specific values or values that have been read before.

But there is a method that sets the node as well as the cached value:

Mage::app()->getStore()
    ->setConfig('section/group/field', $value);

Answer 2

You are correct. setNode() uses full Xpath. You'll need to set store data using the absolute path:

stores/[code]/carriers/flatrate/active