CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3.2
T. Junghans
T. Junghans

Reputation: 11683

How to join strings in Rails helper options

I'm fairly new to Rails. The code snippet in Figure 1 is causing a rails exception wrong number of arguments (0 for 1) when the variable asset_path is added in front of the value of original.

Figure 1: Rails image_tag

<%= image_tag("foo/blank.gif", {
    :class =>"lazy", 
    :data => { "original" => asset_path + 'foo/image-01.png'}, 
    :alt => ""}) %>

The problem seems to lie with the way the two strings are joined:

asset_path + 'foo/image-01.png'

What is the correct way of joining two strings in this context?

Upvotes: 0

Views: 112

Answers (2)

soyellupi
soyellupi

Reputation: 95

In addition, you should use "asset_path" in your assets (javascript, css), for example: 

$('#logo').attr({
  src: "<%= asset_path('logo.png') %>"
});

A must read to make up your mind: http://guides.rubyonrails.org/asset_pipeline.html

Upvotes: 0

idlefingers
idlefingers

Reputation: 32037

Asset path requires an argument and you're not passing one, which is why it's exploding. The proper way to do this would be to use image_path, which also requires an argument:

<%= image_tag("foo/blank.gif", {
    :class =>"lazy",
    :data => { "original" => image_path("foo/image-01.png")},
    :alt => ""}) %>

Upvotes: 2

Related Questions