Merge pull request #5290 from atm-ph/fix_3.7_issue_2777

Fix #2777

htdocs/core/lib/admin.lib.php

@@ -732,17 +732,24 @@ function activateModule($value,$withdeps=1)
         if (isset($objMod->depends) && is_array($objMod->depends) && ! empty($objMod->depends))
         {
             // Activation des modules dont le module depend
+            $TError=array();
             $num = count($objMod->depends);
             for ($i = 0; $i < $num; $i++)
             {
+            	$activate = false;
             	foreach ($modulesdir as $dir)
             	{
             		if (file_exists($dir.$objMod->depends[$i].".class.php"))
             		{
             			activateModule($objMod->depends[$i]);
+						$activate = true;
             		}
             	}
+				
+				if (!$activate) $TError[] = $langs->trans('activateModuleDependNotSatisfied', $objMod->name, $objMod->depends[$i]);
             }
+            
+            setEventMessages('', $TError, 'errors');
         }
 
         if (isset($objMod->conflictwith) && is_array($objMod->conflictwith) && ! empty($objMod->conflictwith))

htdocs/langs/en_US/admin.lang

@@ -1563,3 +1563,4 @@ TypePaymentDesc=0:Customer payment type, 1:Supplier payment type, 2:Both custome
 IncludePath=Include path (defined into variable %s)
 NoModueToManageStockDecrease=No module able to manage automatic stock decrease has been activated. Stock decrease will be done on manual input only.
 NoModueToManageStockIncrease=No module able to manage automatic stock increase has been activated. Stock increase will be done on manual input only.
+activateModuleDependNotSatisfied=Module "%s" depends on module "%s" that is missing, so module "%1$s" may not work correclty. Please install module "%2$s" or disable module "%1$s" if you want to be safe from any surprise
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