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ruby-on-railsbooleanhidden-fieldruby-on-rails-5.2ruby-2.5

hidden_field_tag fails to pass boolean

I am passing a hidden field for a form to distinguish between views the request came from:

<%= hidden_field_tag("advanced", true)%>

Apparently true gets passed as a string. I tried different syntaxes like:

<%= hidden_field_tag "advanced", true %>
<%= hidden_field_tag "advanced" => true %>
<%= hidden_field_tag :advanced => true %>

It always gets translated to this

<input type="hidden" name="advanced" id="advanced" value="true" />

Obviously, I can check the string value in the controller, but is this the expected behaviour?

Solution

  • Rails translate your parameters to the equivalent html, and it is only possible to have strings in html. The hidden_field_tag is just a hidden text_field_tag, so the value need to be text. And in the url you also have a string. So the conversion need to be done in the controller.