I'm trying to render a js alert directly after a user clicks on a submit.

Here's what I have and what I've tried:

That's my erb file.

```
<form action="/welcome/subscribe">
    <div>
        <div id="bottomm">
            <input id="bottom" type="text" name="email" placeholder="Adresse mail" />
        </div>
        <div>
            <input type="submit" value="Ok"/>
        </div>
    </div>
</form>

```

Here's the subscribe method in my controller:

```
def subscribe
  @test = Test.new
  @test.email = params['email']
  @test.save
  binding.pry
  render js: "alert('test)";
end

```

But I get this error:

`Security warning: an embedded <script> tag on another site requested protected JavaScript. If you know what you're doing, go ahead and disable forgery protection on this action to permit cross-origin JavaScript embedding.`

Any idea? :/

edit:

By adding theses 2 lines I can now avoid the warning:

```
protect_from_forgery with: :exception
skip_before_action :verify_authenticity_token

```

But now it's redirecting me on a blank page with just written on it:

```
alert('test')

```