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Editorial Team
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Asked: 2026-06-06T07:42:56+00:00

We’re using Rails 3.2.3, Ruby 1.9.1, and HAML. We have a Post model and

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We’re using Rails 3.2.3, Ruby 1.9.1, and HAML. We have a Post model and there is something very weird happening only sometimes and only in Internet Explorer 9.

ActionView::Template::Error (incompatible character encodings: UTF-8 and ASCII-8BIT):

The error is in the following line:

= raw @post.content

Wich returns the post’s content from the database. Note the content has HTML tags.

Weird things are:

  • The error only shows on some machines with IE 9. (We can’t reproduce the error in other machines using the same IE 9 build)
  • The error only happens sometimes.

We’ve tried this wit no luck (same error):

= raw @post.content.force_encoding('utf-8')

Any insight? Thanks in advance.

Update
After a few changes now the error shows up in the following line:

37:         .social

There is nothing weird in that line, just spaces (not tabs) and the “.social” string. This is crazy.

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1 Answer

  1. Editorial Team

    Ok, finally found the issue. It was a 

     = link_to "Back" :back

    It’s better explained here:
    Non ascii characters in link_to is causing the app to fail in internet explorer 9 in rails app

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