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Editorial Team
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Asked: 2026-05-24T19:27:51+00:00

I use flash[:error] to display a simple message to users that they cannot do

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I use flash[:error] to display a simple message to users that they cannot do a delete operation under certain conditions. I also have a link that will help them to get information about the entity that they wanted to delete and why they cannot do so.

Is it advisable to include this hyperlink in the flash message? Which would mean that I would have a HTML fragment in my controller. If not, how would I go about doing this?

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1 Answer

  1. Editorial Team

    If you want to include a link in your flash message from the controller there are 2 issues. Generating the link and then getting it displayed as HTML.

    To use the link_to helper in the controller, fully qualify it.

    To have the string display as html (instead of being escaped), call the html_safe method on the string. So the line in your controller might look like:

    flash[:error] = "You can't do that. #{ActionController::Base.helpers.link_to "Here's why.", '/more_info.html'}".html_safe
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