I'd like to use the .replace("'", r"\'") method to avoid problems caused by single quotes within JSON strings.. and so that my factory works ...as intended  
Simplest solution I could find from This  post suggests the replace method, however, beeing new in JS, I have troubles implementing it  within my factory. 
I am not quite sure where and how to put it, so that any given controller  calling different function  (especially the getDishes and getDishfunctions at the end of the script below) all get a "formatted string"
Factory :
angular.module('wmapp.factory_dishes', [])
.factory('dishesFactory', function (){
var factory = {
    dishes :[
        {   nameEnglish: 'beef burgungdy', 
            nameLocal: 'boeuf bourgignon',
            description: 'xxxxxx',
            region: 'sicile',
            itemid: 'IT018',
            cuisineTypeIsoCode: 'IT',
            country:'France',
            dishCategory: 'Meat',
        },
        {   nameEnglish: 'duck liver', 
            nameLocal: 'foie gras',
            description: 'xxxxxx',
            region: 'sicile',
            itemid: 'IT021',
            cuisineTypeIsoCode: 'IT',
            country:'France',
            dishCategory: 'fruit',
        },  
        {   nameEnglish: 'veal stew',
            nameLocal: 'blanquette de veau',
            description: 'xxxxxx',  
            region: 'parme',
            itemid: 'IT023',
            cuisineTypeIsoCode: 'IT',
            country:'France',
            dishCategory: 'fruit',
        },
        {   nameEnglish: 'onion soup', 
            nameLocal: 'soxxxxxx',
            region: 'vanitia',
            itemid: 'IT022',
            cuisineTypeIsoCode: 'IT',
            imageSource: '( "img/" + dish.cuisineTypeIsoCode + "/" + dish.itemid + "small.jpg")',
            country:'France',
            dishCategory: 'Soup',
        },
        {  nameEnglish: 'TAPENADE',
           nameLocal: 'Tapenade', 
           description: 'xxxxxx',
           region: 'Provence-Alpes-Côte d'Azur', 
           regioncode: 'FR.B8', 
           itemid: 'FR002', 
           cuisineTypeIsoCode: 'FR', 
           dishCategory: 'Entrée / Appetizers', 
           country: 'France'}
      ], 
      getDishes : function (){
        return factory.dishes;
      },
      getDish :function (itemid){
        var dish = {};
        angular.forEach(factory.dishes, function(value, key) {
            if (value.itemid == itemid){
                dish = value
            }
        });       
        return dish;
      }
}
return factory;
})