Jisse Reitsma 123betaal

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Presentation at the Dutch Magento conference 'Dutchento' on January 27th, 2009.

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Jisse Reitsma 123betaal

  1. 1. Integrating 123betaal into Magento
  2. 2. Me • Jira ICT – Training in Magento, Joomla! & Drupal – Consult regarding implementation, security, architecture, etc – Some other things like open source • Jisse Reitsma (me) – PHP programming (Magento, Joomla! & Drupal) – System administrator – Security consultant – Writer of “Joomla!-templates ontwerpen”-book Jisse Reitsma (www.jira.nl) @Dutch Magento Day 2
  3. 3. Steps • Rename “PayPal” to “123betaal” – Package name “Jira” – Module name “123Betaal” – Total name “Jira_123Betaal” • Debug everything that does not work • Re-check functionality Jisse Reitsma (www.jira.nl) @Dutch Magento Day 3
  4. 4. Debugging In general Read before you start White Screen Of Death PHP Fatal Errors Regular PHP debugging Specific problems Garbled output because of XML syntax Legal but non-usable XML caused the buffer to go crazy The “Comment Everything” strategy Model-class not found Using a different name-base then Mage_* Opening up the Magento source Jisse Reitsma (www.jira.nl) @Dutch Magento Day 4
  5. 5. php|architects Guido to Prog. with Magento • A very small book for a very complex application • Requires a good understanding of Object-Oriented Programming Jisse Reitsma (www.jira.nl) @Dutch Magento Day 5
  6. 6. White Screen Of Death • ... or read the PHP Fatal Error from the screen • ... or read the Apache error-log • Check the syntax of your PHP-code • Check the syntax of your Magento-specific code • RTFM (“Read The Fine Manual”) Jisse Reitsma (www.jira.nl) @Dutch Magento Day 6
  7. 7. Garbled output because of XML syntax Problem: When going to the “Settings” screen, instead of HTML something half compressed(?) is shown, but no error is logged. • Conclusion 1: The problem lies in a XML error. • Debug method: Comment everything but X • Conclusion 2: <123betaal> is causing the problem, because the variable $123betaal can not exit • Solution: Rename “123betaal” to “betaal123” Jisse Reitsma (www.jira.nl) @Dutch Magento Day 7
  8. 8. Model “Mage_Jira_Betaal123” not found (1) Problem: XML in “system.xml” contains a <source_model>-tag defining “betaal123/source_paymentAction” as PHP-class to fill the parameter in question with options. The final PHP-class that should be called is “[local]Jira_Betaal123_Model_Source_PaymentAction” but instead Magento tries to call “[*]Mage_Jira_Model_123Betaal” which does not exist. • Debug method: Read all the PHP source-code involved Jisse Reitsma (www.jira.nl) @Dutch Magento Day 8
  9. 9. Model “Mage_Jira_Betaal123” not found (2) • Mage_Adminhtml_Block_System_Config_Form::initFields() • Mage::getSingleton() • Mage::getModel() • Mage_Core_Model_Config::getModelInstance() • Mage_Core_Model_Config::getModelClassName() • Mage_Core_Model_Config::getGroupedClassName() • PROBLEM FOUND! Cause: <source_model> can never refer to a base-name other than Mage_* (for instance Jira_Betaal123) Solution: Rename “Jira_Betaal123” to “Mage_Betaal123” Jisse Reitsma (www.jira.nl) @Dutch Magento Day 9
  10. 10. Copying module from server1 to server2 • Copy all files through a ZIP-patch • Refresh “Admin” page • Huh, nothing happens? • Disable Cache • Refresh “Admin” page • (no database action needed!) • It works Jisse Reitsma (www.jira.nl) @Dutch Magento Day 10
  11. 11. Conclusions • Debugging requires a solid understanding of Object-Oriented PHP • Debugging takes more time because of the complex object-hierarchy within the Magento core • Third party packages can still cause (wierd) problems Jisse Reitsma (www.jira.nl) @Dutch Magento Day 11

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