CODEWITHSUNDEEP
ruby-on-rails
徐啟倫
徐啟倫

Reputation: 19

Use array to implement checkbox in ruby on rails

How can I make 10 or more than 10 check box by a for loop

This is my code

In view.html.erb

<% (0...100) do |i| %>
  <%= f.check_box :chkbox_ary[i], {:checked=>false, :style => "width: 20px; height: 20px;"} %>
  <%= f.label "checkbox" %>
<% end %>

And in model

attr_accessor :chkbox_ary

def initialize(attributes = {})
  @chkbox_ary = []
end

I think this is OK, but I always get error

Internal Server Error
expected Array (got Rack::Utils::KeySpaceConstrainedParams) for param `travel'

How can I do to get my purpose or have some reference for me? Thanks

Upvotes: 0

Views: 366

Answers (1)

Thilo
Thilo

Reputation: 17735

Your loop is missing an iterator:

(0...100).each do |i|

And you cannot use an index on a symbol - use the name of the array, and interpolate the index variable:

f.check_box "chkbox_ary[#{i}]" #...

Upvotes: 1

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