Yii2: Proper way of writting the form's action - php

Question

I have written form tag of YII2 specific as
<?php $form = ActiveForm::begin(['id' => 'builder/saveform','options' => ['method' => 'post']]) ?>
but when i run this, my external javascript is catching an error showing
Error: Syntax error, unrecognized expression: #builder/saveform
What is the error

Answer 1

To change default action add it as the first argument in this format ['<controller>/<action>']
<?php $form = ActiveForm::begin(['action' => ['builder/saveform'],'options' => ['method' => 'post']]) ?>
Example from the Yii2 guide
Also, keep in mind that the method defaults to post, so specifying that is unnecessary.

Answer 2

$form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data'], 'action' => Yii::$app->urlManager->createUrl(['site/signup'])]);
You can also use this snippet for custom form action and other attributes. createUrl method will not affect your url pattern.

Answer 3

for the sake now i have written the following code
<?php $form = ActiveForm::begin(['action' => 'index.php?r=builder/saveform','options' => ['method' => 'post']]) ?>
it is working but is it the proper way to write???

Answer 4

I was able to do it by adding the action into the options like so
<?php $form = ActiveForm::begin(['id' => 'contact-form', 'options' => ['method' => 'post', 'action' => 'site/add']]); ?>

Answer 5

For Yii2
$form = ActiveForm::begin([
'id' => 'login-form',
'options'=>['autocomplete'=>'off','method' => 'post', ],
'action' => '/frontend/web/user-management/auth/login',
'validateOnBlur'=>false,
'fieldConfig' => [
'template'=>"{input}\n{error}",
],
]);

Answer 6

Since there is still no accepted answer, the exact answer to your question is in the Error:
"unrecognized expression: '#builder/saveform' ". You have your 'id' HTML tag of the Form being assigned a value of 'builder/saveform', which contains "/" - an illegal character in terms of HTML4 Specification. I suppose Yii has a "validation" in place resulting in your error.
Now, I believe you are trying to specify the relative URL for the Form submission. For that, please refer to Michael St Clair's answer.