CODEWITHSUNDEEP
ruby-on-railsruby
conterio
conterio

Reputation: 1174

display an attr_accessor in html.erb view

I would like to display some properties of a ruby class to my view. I get a undefined method age error when I try to do so.

person.rb

attr_accessor :age

controller action

def show
 @persons = Person.all
 @persons.each do |p|
   p.age = 25
 end
end

show.html.erb view

<%= @persons.each do |p| %>
   <%= p.age %>
<% end %>

Upvotes: 0

Views: 510

Answers (2)

Igor Pavlov
Igor Pavlov

Reputation: 720

By the way, if Person is AR models, I advise you to use some gem like draper. It would create decorator for you model. And in decorator you can define default values, attr_accessors and it would be more elegant and practical solution. And your code would look like:

def show
  @persons = Person.all.decorate
end

Upvotes: 1

Andrey Deineko
Andrey Deineko

Reputation: 52357

1) show is to display a single person, not a collection (index action is where you display the collection).

2) You should not have any troubles with displaying age once you have defined the attr_accessor :age in model.

So the following code is valid (even without assigning age to any of the @persons:

<%= @persons.each do |p| %>
  <%= p.age %>
<% end %>

Having that you showed

# person.rb
attr_accessor :seats

maybe you do not have neither

# person.rb
attr_accessor :age

nor the column called age in people (persons?) table.

Upvotes: 1

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