Helper for array of objects in rails 3

Question

I have a rails 3 helper function. This function simply takes an array of ojects and return images based on the url in each object. For some reason, I cannot seem to print the images...I just get back the array.

for example:

def my_helper(items)
 items.each do |item|
   image_tag(item)
 end
end

this returns the array. I've tried assigning to a variable and outputting, but no luck. I've seen where people say just use item.join('<br/>') but I didn't get that to work.

Help appreicated

Salil · Accepted Answer · 2012-06-05 14:02:58Z

2

This should work:

def my_helper(items)
  items.map do |item|
    image_tag(item)
  end.join('<br/>')
end

answered Jun 5, 2012 at 14:02

Salil

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Comments

mu is too short · Accepted Answer · 2012-06-03 01:11:34Z

1

The each method returns the original list it iterates over (in your example, items). To get what you want, you can use map:

def my_helper(items)
  items.map do |item|
    image_tag(item)
  end
end

edited Jun 3, 2012 at 1:11

mu is too short

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answered Jun 3, 2012 at 0:40

Tomas Mattia

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2 Comments

berto77 Over a year ago

Hey thanks. I tried map, but it doesn't work. It returns an array of the text links, not the rendered images. So for example it returns: [<img src=image1.jpg/>, <img src=image2.jpg />], rather than rendering the images. Thanks for your help.

berto77 Over a year ago

It's returning a string which wraps an array of strings...I don't need a string returned...that's my problem.

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