Which of the following options will correctly show an image in the HTML ERB template in Rails?

 

Which of the following will return a User object when used with a model which deals with a table named User?

After executing the following code, what will the value of foo be? foo = 'bar' wom = Proc.new {|foo| foo = 'baz'} wom.call('pling')

Which of the following validations are supported by models?

The asset tag helpers do not verify the existence of the assets at the specified locations.

Which of these tools are for checking Ruby code styling?

You've got a form, and when the user submits invalid data, you simply show them an error page (no redirect). In the controller, to show the general error on the rendered page, you would add:

Counter caches can be used for:

Handling an AJAX request in controller, which of the following redirects to google?

If you're using the standard Rails RESTful routes, then which of the following actions map to the url, '/posts'?

In development mode (config.assets.digest = false), if a file exists in app/assets/javascript/hello.js, which link will show that file ?