Check form submitted values in ruby on rails - ruby

Question

On my rails app I have a form on /addfiles where user can add file path in text boxes and this form is submitted to /remotefiles
I have created a route match '/remotefiles' => 'main#remotefiles'
and function in main controller
def remotefiles
render layout: false
end
and add remotefiles.html.haml in views/main
how can I show these submitted values on remotefiles, I think it can be done with render but not sure how can I use it to pass form values and show them on view.
Is there a way to check form data in ruby on rails just like php print_r function ?

Answer 1

Your form data is coming in via the params hash. The simplest way to respond with it would be
# MainController
def remotefiles
render json: params
end
If your form contained fields named foo and bar, you'll see those as well as some parameters Rails adds:
{
"foo": 1,
"bar": 2,
"controller": "Main",
"action": "remotefiles"
}
If you want to render them into a real template, write the HTML into app/views/main/remotefiles.html.erb. Rails will by default render a template matching your controller and action, or if you want a different one you can instruct Rails to render "path/to/other/template". Your template can access params too, but the more typical way to pass data into them is by setting instance variables in the controller.
# MainController
def remotefiles
#foo = params[:foo]
#bar = params[:bar]
end
# app/views/main/remotefiles.html.erb
<strong>Foo</strong> is <%= #foo %>
<strong>Bar</strong> is <%= #bar %>
Lastly, if you don't actually want to render the form data back to the browser, just inspect it during development, Rails.logger will print it into your server log.
# MainController
def remotefiles
Rails.logger.info(params[:foo], params[:bar])
end
You should read up on how Rails works - the getting started guides are very clear and helpful. Here's the one on rendering.