Merge branch '4.4' into 5.1

* 4.4:
  Add namespace into service_container.rst file
  Fix Typo
  Update doctrine.rst
  Update database.rst
  [Workflow] Update workflow.rst

Author: javiereguiluz

doctrine.rst

@@ -44,10 +44,13 @@ The database connection information is stored as an environment variable called
     # .env (or override DATABASE_URL in .env.local to avoid committing your changes)
 
     # customize this line!
-    DATABASE_URL="mysql://db_user:db_password@127.0.0.1:3306/db_name"
+    DATABASE_URL="mysql://db_user:db_password@127.0.0.1:3306/db_name?serverVersion=5.7"
 
     # to use sqlite:
     # DATABASE_URL="sqlite:///%kernel.project_dir%/var/app.db"
+    
+    # to use postgresql:
+    # DATABASE_URL="postgresql://db_user:db_password@127.0.0.1:5432/db_name?serverVersion=11&charset=utf8"
 
 .. caution::
 

http_client.rst

@@ -77,7 +77,7 @@ automatically when type-hinting for :class:`Symfony\\Component\\HttpClient\\Http
 
 .. tip::
 
-    The HTTP client is interopable with many common HTTP client abstractions in
+    The HTTP client is interoperable with many common HTTP client abstractions in
     PHP. You can also use any of these abstractions to profit from autowirings.
     See `Interoperability`_ for more information.
 

service_container.rst

@@ -331,7 +331,8 @@ Now, this new service is ready to be used. In a controller, for example,
 you can type-hint the new ``SiteUpdateManager`` class and use it::
 
     // src/Controller/SiteController.php
-
+    namespace App\Controller;
+    
     // ...
     use App\Updates\SiteUpdateManager;
 

testing/database.rst

@@ -15,7 +15,7 @@ your project and define the new value for the ``DATABASE_URL`` env var:
 .. code-block:: bash
 
     # .env.test.local
-    DATABASE_URL=mysql://USERNAME:PASSWORD@127.0.0.1/DB_NAME
+    DATABASE_URL=mysql://USERNAME:PASSWORD@127.0.0.1:3306/DB_NAME?serverVersion=5.7
 
 .. tip::
 

workflow.rst

@@ -665,6 +665,9 @@ of domain logic in your templates:
 
 ``workflow_has_marked_place()``
     Returns ``true`` if the marking of the given object has the given state.
+    
+``workflow_transition_blockers()``
+    Returns :class:`Symfony\\Component\\Workflow\\TransitionBlockerList` for the given transition.
 
 The following example shows these functions in action:
 
@@ -697,6 +700,11 @@ The following example shows these functions in action:
     {% if 'reviewed' in workflow_marked_places(post) %}
         <span class="label">Reviewed</span>
     {% endif %}
+    
+    {# Loop through the transition blockers #}
+    {% for blocker in workflow_transition_blockers(post, 'publish') %}
+        <span class="error">{{ blocker.message }}</span>
+    {% endfor %}
 
 Storing Metadata
 ----------------