Answers.Body: <p>You can create a custom validation at the <code>EVENT_BEFORE_SAVE</code> event</p>
  
  <pre><code>Event::on(Entry::class,
      Entry::EVENT_BEFORE_SAVE,
      function(ModelEvent $event){
          /** @var Entry $entry */
          $entry = $event-&gt;sender;
          // you can check for the section and the type
  
          $model = DynamicModel::validateData(['title' =&gt; $entry-&gt;title], [
              [['title'], 'string', 'max' =&gt; 2, 'message'=&gt;'{attribute} should not be longer than 2 characters']
          ]);
          if($model-&gt;hasErrors()){
              $entry-&gt;addErrors($model-&gt;getErrors());
              $event-&gt;isValid = false;
          }
  });
  </code></pre>
  
  <p>You can leave remove the <code>message</code> attribute if you don't want to use a custom error message, I just wanted to provide a full example how to validate data in Yii2. That way you can define whatever rule you want</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-04-27T21:20:53.810Z
Answers.Text: Thanks Robin, that is above my dev threshold level :) . I took a look in SavableComponent.php but not sure if that is where I make the change.
Answers.UserDisplayName: Vin
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-04-27T21:25:39.143Z
Answers.Text: It's actually not that hard. If you are going to create a more complex site you'll need to create plugins. You should read the docs https://github.com/craftcms/docs/blob/v3/en/plugin-intro.md this change belongs into a module or plugin. There is not really another way to achieve it
Answers.UserDisplayName: Robin Schambach
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2018-04-27T20:37:04.927Z
Answers.LastActivityDate: 2018-04-27T20:37:04.927Z
Answers.UserDisplayName: Robin Schambach
Body: <p>Is it possible to limit the title field in an entry?  As with other fields I can adjust so that it only takes a certain amount of characters.</p>
  
Tags: <entry><validation>
Title: Title field character length
ThreadText: # Title field character length
  
  (Asked by: username_0 on 2018-04-27)
  
  Is it possible to limit the title field in an entry? As with other fields I can adjust so that it only takes a certain amount of characters.
  
  **Tags:** entry, validation
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2018-04-27. Score: 4 | Accepted answer
  
  You can create a custom validation at the `EVENT_BEFORE_SAVE` event
  
  ```
  Event::on(Entry::class,
      Entry::EVENT_BEFORE_SAVE,
      function(ModelEvent $event){
          /** @var Entry $entry */
          $entry = $event->sender;
          // you can check for the section and the type
  
          $model = DynamicModel::validateData(['title' => $entry->title], [
              [['title'], 'string', 'max' => 2, 'message'=>'{attribute} should not be longer than 2 characters']
          ]);
          if($model->hasErrors()){
              $entry->addErrors($model->getErrors());
              $event->isValid = false;
          }
  });
  
  ```
  
  You can leave remove the `message` attribute if you don't want to use a custom error message, I just wanted to provide a full example how to validate data in Yii2. That way you can define whatever rule you want
  
  > **Comments:**
  > **username_0**: Thanks username_1, that is above my dev threshold level :) . I took a look in SavableComponent.php but not sure if that is where I make the change.  
  > **username_1**: It's actually not that hard. If you are going to create a more complex site you'll need to create plugins. You should read the docs https://github.com/craftcms/docs/blob/v3/en/plugin-intro.md this change belongs into a module or plugin. There is not really another way to achieve it  
  
  ---
  
  