Loop over Object attributes in Ruby on Rails

Question

Is it possible to loop over an object's attributes in Rails? I have an object and rather than code up each attribute in the view, I want to output each of them in the view as there are quite a few.

I have an object called @work_profile which has many attributes, mainly boolean check box values.

Edit: I see I can use @work_profile.attributes. Any help on formatting the hash into something more user friendly would be great.

mbreining · Accepted Answer · 2011-05-22 02:51:03Z

76

The ActiveRecord::Base.attributes() method returns a hash of all the attributes. You can use that to loop over all attributes.

@work_profile.attributes.each do |attr_name, attr_value|
  ...
end

In a view, this would give:

<% @work_profile.attributes.each do |attr_name, attr_value| %>
  <div class="work_profile_attribute">
    <%= attr_name %>: <%= attr_value %>
  </div>
<% end %>

edited May 22, 2011 at 2:51

answered May 22, 2011 at 2:36

mbreining

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4 Comments

Robert B Over a year ago

Great that's what I was looking for. How can format the output of the hash in the view?

mbreining Over a year ago

I'm not entirely sure what you mean by the output of the hash but I added a code snippet that shows how you could loop over the attributes in a view. Just an example...

Robert B Over a year ago

Is there a way to convert the attr_name to something more friendly? Ie: have_a_car: true to something more like Have a car: true

mbreining Over a year ago

Try attr_name.humanize. This will convert a string such as "have_a_car" into "Have a car". Note that the String#humanize method is provided by Rails so this won't work outside of a Rails environment.

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