chore: display warning message in admin if the block is deleted

Author: Maxime Leclercq

src/Resources/translations/messages.en.yaml

@@ -7,6 +7,7 @@ monsieurbiz_cms_block:
     cms_content: "CMS content"
     blocks_subheader: "CMS block management"
     back_to_admin: "Back to admin"
+    block_not_found: 'Block "%name%" not found.'
     form:
       block_info: 'Block information'
       block_content: 'Block content'

src/Resources/translations/messages.fr.yaml

@@ -7,6 +7,7 @@ monsieurbiz_cms_block:
     cms_content: "Contenu CMS"
     blocks_subheader: "Gestion des blocs CMS"
     back_to_admin: "Retour à l'administration"
+    block_not_found: 'Le bloc "%name%" n''a pas été trouvé.'
     form:
       block_info: 'Informations sur le bloc'
       block_content: 'Contenu du bloc'

src/Resources/views/Admin/UiElement/block.html.twig

@@ -10,4 +10,8 @@ element methods:
 {% set blockEntity = ui_element.getBlock(element.block) %}
 {% if blockEntity and blockEntity.enabled %}
     {{ blockEntity.content|monsieurbiz_richeditor_render_field }}
+{% else %}
+    <div class="ui orange message">
+        {{ 'monsieurbiz_cms_block.ui.block_not_found'|trans({'%name%': element.block}) }}
+    </div>
 {% endif %}