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Migrating a module from 1.6 to 1.7


  • Payment module have change, check doc.


  • We changed all variables passed to smarty, make sure what you use is still assigned
  • $link is deprecated (even if it’s still passed to smarty, it will be removed at some point), use {url} helper
  • make sure your use the new way of calling templates: fetch(module:modulename/views/template.tpl)
  • make sure you don't add your assets with hardcoded path in displayHeader hook (no change but it’s bad)
  • Smarty is automatically escaped, so: 1. Remove all |escape:’html’:’UTF-8’ (FOR FRONT TEMPLATES ONLY) 2. Add nofilter if you print html
  • Only rely documented variables ! Any other variable my come from a module or just be a left over and might be removed at any time.
  • If you use the backward_compatibility package, check that PrestaShop version is 1.4 before importing it. With PrestaShop 1.7 you’ll get a fatal error

Note: many external libraries have been updated. Here is a list of some external extra doc about it:

How to make a module compatible with 1.6 AND 1.7

  • Use legacy translation system ($this->l)
  • Use 2 templates different depending on the version
  • Implements getWidgetVariables and renderWidget but dont explicitly implements the php interface.
  • Create all specific hook method like hookDisplayHeader and call renderWidget with the correct parameters
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