feat: enhance form handling and data integrity in admin interface

- Exclude ID field from edit forms to prevent accidental changes
- Update form action URL for editing instances, ensuring proper routing
- Ensure primary key is included in update data, enhancing data integrity

example/main.go

@@ -13,7 +13,7 @@ import (
 )
 
 type TestModel1 struct {
-	ID   uint `gorm:"primarykey"`
+	ID   uint `gorm:"primarykey" admin:"editForm:exclude"`
 	Name string
 }
 

internal/templates/edit_instance.html

@@ -23,7 +23,7 @@ <h2>Models Sidepanel</h2>
             {{ end }}
         </ul>
         <h2>Edit {{ .model.DisplayName }}</h2>
-        <form method="post" action="{{ .model.GetFullAddLink }}">
+        <form method="post" action="{{ .model.GetFullLink }}/{{ .form.InstanceID }}/edit">
             {{ formAsP .form .formErrs .fieldErrs }}
             <button type="submit">Submit</button>
         </form>

orm-integrations/gorm/integrator.go

@@ -240,6 +240,10 @@ func (i *Integrator) UpdateInstanceOnlyFields(instance interface{}, fields []str
 		}
 		updateData[fieldName] = fieldValue.Interface()
 	}
+	if _, exists := updateData[primaryField.Name]; !exists {
+		updateData[primaryField.Name] = primaryKey
+		fields = append(fields, primaryField.Name)
+	}
 
 	return i.DB.Model(instance).Where(fmt.Sprintf("%s = ?", primaryKeyDBName), primaryKey).Select(fields).Updates(updateData).Error
 }