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Home/ Questions/Q 7620271
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Editorial Team
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Editorial Team
Asked: May 31, 20262026-05-31T03:53:56+00:00 2026-05-31T03:53:56+00:00

I am using Sinatra and rendering views with ERB. I have the following action

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I am using Sinatra and rendering views with ERB.
I have the following action

get '/user/:id' do
  u = @users.retrieve( params[:id] )
  u[:mykey] = [1,2,3]
  erb( :user, :locals => { :user => u } )
end

and the view looks like this

<body>
    <h1><%= user["name"] %></h1>

    <pre><%= user["mykey"].to_json %></pre>

and where I expect to get the [1,2,3] array, I get a big fat null.
Primitive values such as the name, are passed without a problem.

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  1. Editorial Team
    Editorial Team
    2026-05-31T03:53:58+00:00Added an answer on May 31, 2026 at 3:53 am

    Is this of class Hash or HashWithIndifferentAccess?

    You are setting user[:mykey] and retrieving user["mykey"]. Use symbol or string, don’t mix them unless you are using HashWithIndifferentAccess.

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