In my html.erb file, I have some HTML code. Within it, I included this Ruby snippet:
<li <%= puts "class='active'" %>>Link</li>
However, when I test the code on a Rails server, the class="active" part does not appear as expected. Can anyone explain why this is happening and how I can solve it? Perhaps there is a basic concept that I am overlooking?
Avoid using the puts method. Instead, you can utilize the following code snippet:
<li <%= "class='active'" %>>Link</li>
The puts function outputs a string to the standard output and then returns nil, which is why your class attribute is not displayed.
To prevent escaping characters, consider adding the raw prefix to the string:
<li <%= raw "class='active'" %>>Link</li>
Alternatively, if this represents your actual code without any simplifications, you can simply use:
<li class='active'>Link</li>
puts simply prints a message to the standard output, which is the console where your server is operating. The message will not be added to your view but will be displayed by your server.
In this case, there is no need for any statement to evaluate ERB. You can achieve it like this:
<li <%= "class='active'" %>>Link</li>
To learn more about the ERB templating language, you can explore the topic further in the Ruby on Rails view guide.
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