CODEWITHSUNDEEP
ruby-on-railssimple-form
Stephen
Stephen

Reputation: 3992

How to set a default value of radio_buttons in simple-form

I am going to set the default value for radio_buttons in simple_form. This is my code:

<%= f.input :library_type, as: :radio_buttons, collection: Library.library_types.collect { |k,_| [k.capitalize, k]} , checked: 'custom’%>

class Library < ActiveRecord::Base
  enum library_type: [:standard, :custom]
  ...
end

2.2.3 :002 > Library.library_types.collect { |k,_| [k.capitalize, k]}
 => [["Standard", "standard"], ["Custom", "custom"]]

I added a option checked: ‘custom’. when creating a new library, the custom would be default selected.

However, this will cause an error that when a user already choose a library_type. When a user edit a library, it will select the custom as well, even if the user selected the standard.

Anyone know how to solve this? Thanks.

Upvotes: 0

Views: 630

Answers (1)

Ngoral
Ngoral

Reputation: 4814

I would move this logic to the controller. In new action you have to set the library_type field to custom, and it will do it for you. Something like

class LibrariesController < ApplicationController
  def new
    @library = Library.new(library_type: 'custom')
    render 'edit'
  end

  def create
    ...
  end

  def edit
    #find @library here
    render 'edit'
  end

  def update
    ...
  end
end

So, it will set up library_type to custom for new instances and will not overwrite it for already created records.

Upvotes: 1

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