radio buttons to display list of options  - rails app

Posted on 2011-09-25
Last Modified: 2012-05-12
so i have this collection select to select a category of job:

<%= collection_select(:job, :category_id, Category.all, :id, :name, {:include_blank => '-select job type-'} ) %>

Open in new window

instead i want to show the categories as a list of radio buttons a user can select rather than a drop down list.
Question by:depassion
  • 2
  • 2

Expert Comment

ID: 36595086
Did you happen to mean check boxes?

If you take a look at the has_many method in the Rails API, a has_many association sets up Job#category_ids and Job#category_ids= for the job instance:
@job.category_ids # => [1, 2, 3]
@job.category_ids = [1] # => [1]

Open in new window

So in your view you could do:
<% Category.all.each do |category| %>
  <%= check_box_tag 'job[category_ids][]',, f.object.category_ids.include?( %>
  <%= %>
<% end %>

Open in new window

With check boxes, though, if no check box has been checked no data for that form name would be sent to the server. In your controller action, you would have to ensure the value passed for categories_id is an array:
# If no check box in the set has been checked
params[:job][:category_ids] # => nil

# Set to a blank array to catch these cases.
params[:job][:category_ids] ||= []

Open in new window


Author Comment

ID: 36595097
i did actually mean radio button as in the category section here, as only 1 category can be selected

Accepted Solution

kristinalim earned 500 total points
ID: 36595109
Sorry about that. Simpler then:
<% Category.all.each do |category| %>
  <%= f.radio_button :category_id, %>
  <%= %>
<% end %>

Open in new window


Author Closing Comment

ID: 36595116

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
can not obtain uniq values from my text file 12 310
Finding all occurrences 2 214
Method Inheritance / Overriding in Ruby 5 173
compare two windows registry keys in chef 1 62
Article by: narshlob
If you've ever programmed in Ruby and have come across either a proc or a lambda, you might have been wondering what the difference is between the two and when you would use one over the other. This article will try to explain the difference between…
In Ruby, Call or invoke a API DLL library is easily via Win32API class, win32-api gem or other gems. For general DLL API call, there are quite a few references, some good tips list below:…
Hi friends,  in this video  I'll show you how new windows 10 user can learn the using of windows 10. Thank you.
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now