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how to troubleshoot a actionhook not being called / not working ? PS 1.6.x


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Hi All,

 

I have a (very simple) module that hooks into actionGetExtraMailTemplateVars

I'd like to be able to get some additional template_vars available dependent on template and other context available.

 

So i created a module, it installs fine, the hook is registered (i can find it in the modules / hooks overview on the action hook: hookActionGetExtraMailTemplateVars)

however it seems to be either not called, or not working as expected. (I added a log statement to the method, and i would expect to see that log statement in the logs)

 

this is the code (the entire module.php file):

 

	<?php   
if (!defined('_PS_VERSION_')) {
  exit;
}
 
class ExtraEmailFields extends Module
{
	    //constructor
    public function __construct()
    {
        $this->name = 'extraemailfields';
        $this->version = '1.0.0';
        $this->author = 'Henrik Ohm Eriksen';
        $this->need_instance = 0;
        $this->ps_versions_compliancy = array('min' => '1.5', 'max' => _PS_VERSION_);
        $this->bootstrap = true;
	        parent::__construct();
	        $this->displayName = $this->l('ExtraEmailFields');
        $this->description = $this->l('Extra Email Fields. Adds additional email merge fields based on available content in template and template selected. Developed by Henrik Ohm Eriksen.');
	        $this->confirmUninstall = $this->l('Are you sure you want to uninstall?');
    }
   
    //installer
    public function install()
    {
        if (parent::install() == false)
        {
            return false;
        }
        $this->registerHook('hookActionGetExtraMailTemplateVars');    
        return true;
    }
    
    //uninstaller
    public function uninstall()
    {
        if (parent::uninstall() == false)
        {
            return false;
        }
        //Apparantly not neeeded $this->unregisterHook('hookActionGetExtraMailTemplateVars');    
        return true;
    }
	    //Actual Hook Code
    public function hookActionGetExtraMailTemplateVars($params)
    {
        PrestaShopLogger::addLog('my_hook', 1);
        //Extract Context
        $template = $params['template'];
        $template_vars = $params['template_vars'];
        $extra_template_vars = $params['extra_template_vars'];
	        $params['extra_template_vars']['{myVar1}'] = 'FOO_VAR1';
        $params['extra_template_vars']['{myVar2}'] = 'FOO_VAR2';
        $params['extra_template_vars']['{myVar3}'] = 'FOO_VAR3';
	        /*more code here temporarily commented out while troubleshooting*/
    }
}
	

 

Anybody have an idea what I did wrong ?


Regards

 

Henrik

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In PS v1.6, the hook is executed within the Mail class, and it should get executed every time a Mail is sent (there are no conditions).

            Hook::exec('actionGetExtraMailTemplateVars', array(
                'template' => $template,
                'template_vars' => $template_vars,
                'extra_template_vars' => &$extra_template_vars,
                'id_lang' => (int)$id_lang
            ), null, true);

This statement in your module is wrong however. 

$this->registerHook('hookActionGetExtraMailTemplateVars');    

The name of the hook is actionGetExtraMailTemplateVars, so you should register it like this...

$this->registerHook('actionGetExtraMailTemplateVars'); 

After changing your code, use the module reset option in the back office which will uninstall and install your module again.

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