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Editorial Team
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Asked: 2026-05-26T16:31:44+00:00

I have this code: response.headers[X-ERROR-MESSAGE] = A message render :text => Some text, :status

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I have this code:

response.headers["X-ERROR-MESSAGE"] = "A message"
render :text => "Some text", :status => 400

On my local machine I can get the response headers successfully but when I try it on Heroku, they don’t show up. What could be the problem? Is Heroku filtering out my header?

Thanks.

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1 Answer

  1. Editorial Team

    I’ll answer my own question. I just asked Heroku support and they said that Heroku makes those headers camel-case. So X-ERROR-MESSAGE will show up as X-Error-Message.

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