how to add a class to the input component in a wrapper in simple_form 2

Question

I am trying to have class=\"text\" in my input fields when using a custom wrapper called :hinted in simple_form 2.0.0.rc

config.wrappers :hinted do          


        

Answer 1

I had a similar problem, however it seems that this feature (the input_class one) was merged after the 3.0.0 version.

So I tried to make a monkey patch for supporting at least the config.input_class = 'foo' code

My intention is not to do a great monkey patch (in fact I like this article here for doing that - the monkey patch), well it is only an idea but it works, now I'm working with the SimpleForm v2.1.3 and Bootstrap 4 - alpha version (the last one is not important here but it is just for an information purpose)

here is the code for the monkey patch:

module SimpleForm
  mattr_accessor :input_class
  @@input_class = nil
end
module SimpleForm
  module Inputs
    class Base
      def html_options_for(namespace, css_classes)
        html_options = options[:"#{namespace}_html"]
        html_options = html_options ? html_options.dup : {}
        css_classes << html_options[:class] if html_options.key?(:class)
        css_classes << SimpleForm.input_class if namespace == :input && SimpleForm.input_class.present?
        html_options[:class] = css_classes unless css_classes.empty?
        html_options
      end
    end
  end
end

now you can do something like this:

SimpleForm.setup do |config|
  # ...
  config.input_class = 'foo'
  #...
end