no error text when use inputTemplate

[mgrechanik]

What steps will reproduce the problem?

First working code:

                  <?= $form->field($model, 'sigmapercent', [
                      'template' => "{label}\n{input}\n{hint}\n{error}"
                 ])->textInput() ?></div>

works like usual in Yii2.

And now I try to add suffix to the field

<?= $form->field($model, 'sigmapercent', [
                      'inputTemplate' => '<div class="input-group">{input}
                          <span class="input-group-text">%</span>
                      </div>',
                      'template' => "{label}\n{input}\n{hint}\n{error}"
                 ])->textInput()

What is the expected result?

I see a suffix all right

What do you get instead?

But when I put incorrect value in the field, I do not see error message under the field. Only field's border becomes red. (without reloading the page, only js validation)

Additional info

Q	A
Yii vesion	2
PHP version	8
Operating system	ubuntu

[micro-maureen]

Your layout is not right, the correct layout is shown here - https://getbootstrap.com/docs/5.0/forms/validation/#server-side

{error} should be inside the input group, and the input group should have the .has-validation class:

<?= $form->field($model, 'sigmapercent', [
                      'inputTemplate' => '{input}<span class="input-group-text">%</span>',
                      'template' => '{label}<div class="input-group has-validation">{input}{error}</div>',
                 ])->textInput()

Note: I have excluded {hint} from this example.