Ruby & Rails: Variable in string

Question

This is my code and it is loaded in a helper-class

output += '<button class="del_account" param-del="{account.id}">delete</button>'

When I render this to html, account.id is just converted to a string. And not the 'id' that I need. How can I solve this? Because this isn't working either.

output += '<button class="del_account" param-del="#{account.id}">delete</button>'

or this

output += '<button class="del_account" param-del="' +account.id +'">delete</button>'

thanks for your help.

jdoe · Accepted Answer · 2012-04-20 12:08:08Z

3

If you need to use both " and ' symbols then here is simple way to deal with them:

output += %[<button class="del_account" param-del="#{account.id}">delete</button>]

This way you can safely place any of mentioned symbols without worrying to escape them.

answered Apr 20, 2012 at 12:08

jdoe

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theTRON · Accepted Answer · 2012-04-20 12:11:49Z

1

You could use the Rails helper method content_tag (documentation) which makes things a bit cleaner and more readable.

output += content_tag(:button, "delete", :class => "del_account", :'param-del' => account.id)

Also, technically 'param-del' makes your HTML invalid - your custom attributes should begin with 'data-', so updating above would become:

output += content_tag(:button, "delete", :class => "del_account", :'data-account-id' => account.id)

answered Apr 20, 2012 at 12:11

theTRON

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1 Comment

Kevin Gorjan Over a year ago

Yes, I like this more than above. Thanks

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