Verify COMPOSER_VENDOR_DIR in conditional

.github/workflows/release-on-milestone-closed.yml

@@ -1,4 +1,8 @@
-# https://help.github.com/en/categories/automating-your-workflow-with-github-actions
+# Alternate workflow example.
+# This one is identical to the one in release-on-milestone.yml, with one change:
+# the Release step uses the ORGANIZATION_ADMIN_TOKEN instead, to allow it to
+# trigger a release workflow event. This is useful if you have other actions
+# that intercept that event.
 
 name: "Automatic Releases"
 
@@ -21,7 +25,7 @@ jobs:
         with:
           command-name: "laminas:automatic-releases:release"
         env:
-          "GITHUB_TOKEN": ${{ secrets.GITHUB_TOKEN }}
+          "GITHUB_TOKEN": ${{ secrets.ORGANIZATION_ADMIN_TOKEN }}
           "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
           "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
           "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
@@ -55,3 +59,13 @@ jobs:
           "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
           "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
           "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
+
+      - name: "Create new milestones"
+        uses: "laminas/automatic-releases@v1"
+        with:
+          command-name: "laminas:automatic-releases:create-milestones"
+        env:
+          "GITHUB_TOKEN": ${{ secrets.GITHUB_TOKEN }}
+          "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
+          "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
+          "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}

CHANGELOG.md

@@ -22,7 +22,7 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- Nothing.
+- [#71](https://github.com/laminas/laminas-zendframework-bridge/pull/71) fixes detection of the vendor directory when the `COMPOSER_VENDOR_DIR` env variable is missing or empty. Previously, this could lead to scenarios where a non-existent path was used for finding the bridge autoloader.
 
 ## 1.1.0 - 2020-08-18
 

src/Autoloader.php

@@ -66,7 +66,7 @@ public static function load()
      */
     private static function getClassLoader()
     {
-        if (file_exists(getenv('COMPOSER_VENDOR_DIR') . '/autoload.php')) {
+        if (getenv('COMPOSER_VENDOR_DIR') && file_exists(getenv('COMPOSER_VENDOR_DIR') . '/autoload.php')) {
             return include getenv('COMPOSER_VENDOR_DIR') . '/autoload.php';
         }