Assegnazione url corretto alla singola circolare

administrator/forms/circolare.xml

@@ -18,6 +18,14 @@
        type="text"
        label="JFIELD_ALIAS_LABEL"
        description="JFIELD_ALIAS_DESC" />
+       <field
+  name="catid"
+  type="category"
+  extension="com_content"
+  label="JCATEGORY"
+  required="true"
+  default="11"
+/>
     <field name="description" filter="safehtml" type="textarea" label="COM_CIRCOLARI_FORM_LBL_CIRCOLARE_DESCRIPTION" description="COM_CIRCOLARI_FORM_DESC_CIRCOLARE_DESCRIPTION" hint="COM_CIRCOLARI_FORM_LBL_CIRCOLARE_DESCRIPTION"/>
 <field name="attachment" type="media"
        label="COM_CIRCOLARI_FIELD_ATTACHMENT_LABEL"

administrator/sql/updates/1.1.3.sql

@@ -0,0 +1,9 @@
+ALTER TABLE `#__circolari`
+  ADD COLUMN `catid` INT(10) UNSIGNED NOT NULL DEFAULT 0 AFTER `modified_by`,
+  ADD INDEX `idx_catid` (`catid`);
+  
+ALTER TABLE `#__circolari`
+  ALTER `catid` SET DEFAULT 11;
+
+-- opzionale, porta a 11 i record con catid 0/null
+UPDATE `#__circolari` SET `catid` = 11 WHERE `catid` IS NULL OR `catid` = 0;

administrator/src/Model/CircolareModel.php

@@ -21,7 +21,7 @@ use \Joomla\CMS\Helper\TagsHelper;
 use \Joomla\CMS\Filter\OutputFilter;
 use \Joomla\CMS\Event\Model;
 use Joomla\CMS\Event\AbstractEvent;
-use Joomla\CMS\Application\ApplicationHelper; 
+use Joomla\CMS\Application\ApplicationHelper;
 
 
 /**
@@ -127,6 +127,14 @@ class CircolareModel extends AdminModel
             $data = $this->item;
         }
 
+        if ((is_array($data) && empty($data['id'])) || (is_object($data) && empty($data->id))) {
+            if (is_array($data)) {
+                $data['catid'] = (int)($data['catid'] ?? 0) ?: 11;
+            } else {
+                $data->catid = (int)($data->catid ?? 0) ?: 11;
+            }
+        }
+
         return $data;
     }
 

administrator/src/Table/CircolareTable.php

@@ -198,7 +198,7 @@ class CircolareTable extends Table implements VersionableTableInterface, Taggabl
 			$this->ordering = self::getNextOrder();
 		}
 
-// Ordering per nuovi record
+		// Ordering per nuovi record
 		if (property_exists($this, 'ordering') && (int) $this->id === 0) {
 			$this->ordering = self::getNextOrder();
 		}
@@ -235,6 +235,11 @@ class CircolareTable extends Table implements VersionableTableInterface, Taggabl
 		}
 
 
+		// Default categoria (nuovi record o catid non impostato)
+		$this->catid = (int)($this->catid ?? 0) ?: 11;
+
+
+
 		return parent::check();
 	}
 
@@ -313,5 +318,4 @@ class CircolareTable extends Table implements VersionableTableInterface, Taggabl
 		$this->_db->setQuery($q);
 		return ((int) $this->_db->loadResult()) > 0;
 	}
-
 }

administrator/tmpl/circolare/edit.php

@@ -36,6 +36,7 @@ HTMLHelper::_('bootstrap.tooltip');
 				<legend><?php echo Text::_('COM_CIRCOLARI_FIELDSET_CIRCOLARI'); ?></legend>
 				<?php echo $this->form->renderField('title'); ?>
 				<?php echo $this->form->renderField('alias'); ?>
+				<?php echo $this->form->renderField('catid'); ?>
 				<?php echo $this->form->renderField('description'); ?>
 				<?php echo $this->form->renderField('attachment'); ?>
 				<?php echo $this->form->renderField('image'); ?>