Variable in string is not being replaced? [duplicate]

Question

I want my image to be the status' name ("ok.png" for example).

I've tried:

link_to '<img src="images/#{refactoredStatus}.png">'.html_safe, '#', :class => 'option show_status'

But that literally shows images/#{refactoredStatus}.png in my HTML.

How do I do this?

Hint: How does 'string from single quote literal' differ from "string from double quote literal"? See some applicable reference material. — user2864740
– user2864740, Commented Dec 29, 2013 at 21:55

Sam · Accepted Answer · 2013-12-29 22:03:52Z

1

Try:

link_to image_tag("#{refactoredStatus}.png"), '#', :class => 'option show_status'

This uses the Rails image_tag helper instead.

Edit:

If you're set on using HTML instead of the image_tag helper then you can do this:

link_to "<img src=\"images/#{refactoredStatus}.png\">".html_safe, '#', :class => 'option show_status'

or this:

link_to %{<img src="images/#{refactoredStatus}.png">}.html_safe, '#', :class => 'option show_status'

I personally prefer the last solution because you don't have to escape the quotes.

answered Dec 29, 2013 at 21:55

Sam

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1 Comment

While this does indeed use the image_tag helper, which is good, this isn't the change that "solves" the problem/issue.

the Tin Man · Accepted Answer · 2013-12-29 22:42:11Z

-1

Ruby is reading that as a string. The proper way to do this is using the image tag, so:

<%= link_to image_tag('foobar.png'), '#' %>

the Tin Man

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answered Dec 29, 2013 at 21:55

Kevin Hsieh

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While this does show the usage of image_tag, it doesn't address how to interpolate the variable.