Simplified the template code used to render flash messages

app/Resources/views/admin/blog/edit.html.twig

@@ -5,9 +5,7 @@
 {% block main %}
     <h1>{{ 'title.edit_post'|trans({'%id%': post.id}) }}</h1>
 
-    <div class="messages">
-        {{ messages.flashes([ 'post.updated_successfully' ], 'success') }}
-    </div>
+    {{ helper.render_flash_messages() }}
 
     {{ include('admin/blog/_form.html.twig', {
         form: edit_form,

app/Resources/views/admin/blog/index.html.twig

@@ -5,9 +5,7 @@
 {% block main %}
     <h1>{{ 'title.post_list'|trans }}</h1>
 
-    <div class="messages">
-        {{ messages.flashes([ 'post.created_successfully', 'post.deleted_successfully' ], 'success') }}
-    </div>
+    {{ helper.render_flash_messages() }}
 
     <table class="table table-striped">
         <thead>

app/Resources/views/admin/layout.html.twig

@@ -7,8 +7,11 @@
 #}
 {% extends 'base.html.twig' %}
 
-{# Import macros needed for displaying flash messages. See http://twig.sensiolabs.org/doc/tags/import.html #}
-{% import 'macro/messages.html.twig' as messages %}
+{#
+    Import macros used for displaying flash messages.
+    See http://twig.sensiolabs.org/doc/tags/import.html
+#}
+{% import 'macro/messages.html.twig' as helper %}
 
 {% block header_navigation_links %}
     <li>

app/Resources/views/macro/messages.html.twig

@@ -1,23 +1,25 @@
 {#
    Macros are comparable with functions in regular programming languages.
-   They are useful to put often used HTML idioms into reusable elements to not repeat yourself.
+   They are useful to put often used HTML idioms into reusable elements
+   to not repeat yourself.
    See http://twig.sensiolabs.org/doc/tags/macro.html
 #}
-{% macro flashes(flash_keys, alert_class = 'info') %}
-{% from _self import alert %}
-    {% for flash_key in flash_keys %}
-        {% for flash_message in app.session.flashBag.get(flash_key) %}
-            {{ alert(flash_message|trans, alert_class) }}
+{% macro render_flash_messages() %}
+    {% from _self import alert %}
+
+    <div class="messages">
+        {% for flash_message in app.session.flashBag.get('success') %}
+            {{ alert(flash_message|trans) }}
         {% endfor %}
-    {% endfor %}
+    </div>
 {% endmacro %}
 
-{% macro alert(text, class = 'info') %}
-{% spaceless %}
-{# Bootstrap alert, see http://getbootstrap.com/components/#alerts #}
-<div class="alert alert-dismissible alert-{{ class }}" role="alert">
-    <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
-    {{- text -}}
-</div>
-{% endspaceless %}
+{% macro alert(text, class = 'success') %}
+    {# Bootstrap alert, see http://getbootstrap.com/components/#alerts #}
+    <div class="alert alert-dismissible alert-{{ class }}" role="alert">
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+            <span aria-hidden="true">&times;</span>
+        </button>
+        {{ text }}
+    </div>
 {% endmacro %}