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Rails 6
Sprockets::Rails::Helper::AssetNotPrecompiled in <new engine>

add //= link <new_engine>/application.css in the app/assets/config/manifest.js and restart the server

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# app > controllers > concerns > convert_date_select_params.rb
module ConvertDateSelectParams
  extend ActiveSupport::Concern

  included do
    before_action :convert_date
  end

  protected

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function constructor(init) {
  var that = other_constructor(init),
      member,
      
      method = function () {
          // init, member, method
        };
      
      that_method = method;
  

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Omniauth Facebook Error - Faraday::Error::ConnectionFailed
Faraday::Error::ConnectionFailed
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
	
Rails.application.config.middleware.use OmniAuth::Builder do
  provider :facebook, '<key from fb>', '<another key from fb>'
end
	
class SessionsController < ApplicationController
    def create

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namespace :db do
  desc "Load seed fixtures (from db/fixtures) into the current environment's database." 
  task :seed => :environment do
    require 'active_record/fixtures'
    Dir.glob(RAILS_ROOT + '/db/fixtures/*.yml').each do |file|
      Fixtures.create_fixtures('db/fixtures', File.basename(file, '.*'))
    end
  end
end

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# for examples of use, see...
# http://www.igvita.com/2007/03/15/block-helpers-and-dry-views-in-rails/
def block_to_partial(partial_name, options = {}, &block)
  options.merge!(:body => capture(&block))
  concat(render(:partial => partial_name, :locals => options), block.binding)
end

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/*
 * Scale all textareas dynamically on the page
 * Requires Prototype
 */
Event.observe(window, 'load', function() {
  $$('textarea').each(function(t){
    t.scale = function (){
      this.style.height = $F(this).split('\n').size() + 8 + "em";
       setTimeout(function(thisObj){ thisObj.scale(); }, 1000, this);
    };

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# converts the number to a truncated number
# typically used for display of currency values
def smart_truncate(num)
  return '--' if num.nil?

  display_val = case
  when num.abs > 999999: # 999,999 - round to 'X.YY M'
    "%.#{2}f M" % (num / 1000000)
  when num.abs > 999: # 999 - round to an integer
    number_with_delimiter(number_with_precision(num, 0))