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has_many :organizations, through: :user_roles do
  def default
    where(:default_organization_id => self.id).first
  end
end

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// If you use Redux Thunk...
import { createStore, applyMiddleware } from 'redux'
import thunk from 'redux-thunk'
const store = createStore(reducer, applyMiddleware(thunk))

// You can define asynchronous action creators that return functions.
// We call such action creators "thunks":

export function getUser(id) {
  // Redux Thunk will inject dispatch here:

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/* Single Key Filter  */
SELECT * FROM users
WHERE id IN (SELECT id
              FROM (SELECT id, ROW_NUMBER() 
                    OVER (PARTITION BY email ORDER BY id) AS rnum
                    FROM users) t
              WHERE t.rnum > 1);
             
/* Multi Key Fileter */
SELECT * FROM theme_files

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function objectPropertyTrace(object, path){
  let key = path.shift();
  let o = object[key];
  if(path.length === 0 || o === undefined || path[0] === ""){
    return o;
  } else {
    return objectPropertyTrace(o, path);
  }
}

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# Run In Console
rails g model Foo
rails g scaffold_controller Admin::Foo --model-name=Foo

# Generates
# db/migrate/20160907201951_create_foo.rb
# app/models/foo.rb
# app/controllers/admin/foo_controller.rb
# app/views/admin/foo
# app/views/admin/foo/index.html.erb