Changed block layout for roles

Sections are not shown if there are no blocks in it visible for user

Resources/views/Core/dashboard.html.twig

@@ -15,33 +15,84 @@ file that was distributed with this source code.
 {% block breadcrumb %}{% endblock %}
 {% block content %}
 
+    {% set has_left = false %}
+    {% for block in blocks.left %}
+        {% if block.roles|length == 0 or is_granted(block.roles) %}
+            {% set has_left = true %}
+        {% endif %}
+    {% endfor %}
+
+    {% set has_center = false %}
+    {% for block in blocks.center %}
+        {% if block.roles|length == 0 or is_granted(block.roles) %}
+            {% set has_center = true %}
+        {% endif %}
+    {% endfor %}
+
+    {% set has_right = false %}
+    {% for block in blocks.right %}
+        {% if block.roles|length == 0 or is_granted(block.roles) %}
+            {% set has_right = true %}
+        {% endif %}
+    {% endfor %}
+
+    {% set has_top = false %}
+    {% for block in blocks.top %}
+        {% if block.roles|length == 0 or is_granted(block.roles) %}
+            {% set has_top = true %}
+        {% endif %}
+    {% endfor %}
+
+    {% set has_bottom = false %}
+    {% for block in blocks.bottom %}
+        {% if block.roles|length == 0 or is_granted(block.roles) %}
+            {% set has_bottom = true %}
+        {% endif %}
+    {% endfor %}
+
     {{ sonata_block_render_event('sonata.admin.dashboard.top', { 'admin_pool': admin_pool }) }}
 
-    {% if blocks.top|length > 0 %}
+    {% if has_top %}
         <div class="row">
             {% for block in blocks.top %}
-                <div class="{{ block.class }}">
-                    {% if block.roles|length == 0 or is_granted(block.roles) %}
+                {% if block.roles|length == 0 or is_granted(block.roles) %}
+                    <div class="{{ block.class }}">
                         {{ sonata_block_render({ 'type': block.type, 'settings': block.settings}) }}
-                    {% endif %}
-                </div>
+                    </div>
+                {% endif %}
             {% endfor %}
         </div>
     {% endif %}
 
     <div class="row">
-        {% set has_center = false %}
+        {% set width_left = 4 %}
+        {% set width_right = 4 %}
+        {% set width_center = 4 %}
+
+        {# if center block is not present we make left and right ones wider #}
+        {% if not has_center %}
+            {% set width_left = 6 %}
+            {% set width_right = 6 %}
+        {% endif %}
 
-        <div class="{% if blocks.center|length > 0 %}col-md-4{% else %}col-md-6{% endif %}">
+        {# if there is no right and left block present we make center one full width #}
+        {% if not has_left and not has_right %}
+            {% set width_center = 12 %}
+        {% endif %}
+        
+        {# don't show left column if only center one is present #}
+        {% if has_left or has_right %}
+        <div class="col-md-{{ width_left }}">
             {% for block in blocks.left %}
                 {% if block.roles|length == 0 or is_granted(block.roles) %}
                     {{ sonata_block_render({ 'type': block.type, 'settings': block.settings}) }}
                 {% endif %}
             {% endfor %}
         </div>
+        {% endif %}
 
-        {% if blocks.center|length > 0 %}
-            <div class="col-md-4">
+        {% if has_center %}
+            <div class="col-md-{{ width_center }}">
                 {% for block in blocks.center %}
                     {% if block.roles|length == 0 or is_granted(block.roles) %}
                         {{ sonata_block_render({ 'type': block.type, 'settings': block.settings}) }}
@@ -50,23 +101,26 @@ file that was distributed with this source code.
             </div>
         {% endif %}
 
-        <div class="{% if blocks.center|length > 0 %}col-md-4{% else %}col-md-6{% endif %}">
+        {# don't show right column if only center one is present #}
+        {% if has_left or has_right %}
+         <div class="col-md-{{ width_right }}">
             {% for block in blocks.right %}
                 {% if block.roles|length == 0 or is_granted(block.roles) %}
                     {{ sonata_block_render({ 'type': block.type, 'settings': block.settings}) }}
                 {% endif %}
             {% endfor %}
         </div>
+        {% endif %}
     </div>
 
-    {% if blocks.bottom|length > 0 %}
+    {% if has_bottom %}
         <div class="row">
             {% for block in blocks.bottom %}
-                <div class="{{ block.class }}">
-                    {% if block.roles|length == 0 or is_granted(block.roles) %}
+                {% if block.roles|length == 0 or is_granted(block.roles) %}
+                    <div class="{{ block.class }}">
                         {{ sonata_block_render({ 'type': block.type, 'settings': block.settings}) }}
-                    {% endif %}
-                </div>
+                    </div>
+                {% endif %}
             {% endfor %}
         </div>
     {% endif %}