Autoload has a known issue where classes are not found when a module is first enabled. A work around is to clear the cache to rebuild the cache.

I have marked the issue as major as it:

  • Breaks simple tests.
  • Causes errors like Fatal error: Class 'Messaging_Method_Mail' not found to appear when a module is first enabled.

The issue is known in the autoload issue queue #826050: Reload cache on missing class.

The issue above recommends project implement their own fix in the form of autoload_flush_caches() from their hook_enable()

This fix may help the following threads:

CommentFileSizeAuthor
#1 messaging-autoload-on-enable-1351748-1.patch1.71 KBJoeMcGuire
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JoeMcGuire’s picture

JoeMcGuire CreditAttribution: JoeMcGuire commented
Status: Active » Needs review
FileSize
messaging-autoload-on-enable-1351748-1.patch1.71 KB

Attached patch adds hook_enable() with autoload_flush_caches() too messaging and messaging_mail which are the two affected modules which include hook_autoload_info

This allows you to run the test Messaging_Methods_Tests and stops sites generating class not found when the module is first enabled.

JoeMcGuire’s picture

JoeMcGuire CreditAttribution: JoeMcGuire commented

If you are using messaging in combination with notifications it is also suffering from the same issue and has a related issue/patch: #1351782: Autoload classes not found on enable.

JoeMcGuire’s picture

JoeMcGuire CreditAttribution: JoeMcGuire commented

If you are enabling the modules via hook_update_N and drush you might still see class not found errors - this is a related issue and requires a fix in addition to this patch see #1354616: Class not found when enabling modules with hook_update and Drush.