how to fetch collection from localstorage ?? about backbone.localstorage HOT 9 CLOSED

// Let's say the name of the localStorage item is myData inside the collection 
// localStorage attribute.
var Collection = Backbone.Collection.extend({
    model:Model,        
    localStorage: new Backbone.LocalStorage("myData")
});

// now you have access  to myData localStorage item 
console.log(localStorage.getItem('myData');

// Now what you get from the previous instruction is an array of IDs representing
// the IDs of models inside the myData collection

//Now the key for each model inside the local storage is :
// collectionName + '-' + id(an element of the array localStorage.getItem('myData'))

// all models are stored in the one string joined by ','
var firstModel = localStorage.getItem('myData-'+localStorage.getItem('myData').split(',')[0]);
console.log(firstModel); // now you get the first model logged out to the screen 


// Note here that each Model id is the same one stored inside
// the array localStorage.getItem('myData')





// Here is a simple example without too much talking :

var LOCALSTORAGE_NAME = 'myData';

var collectionOfIDs = localStorage.getItem(LOCALSTORAGE_NAME);
    collectionOfIDs = collectionOfIDs.split(',') // because ',' is used to join model IDs in a single string stored in the variable collectionOfIDs 


var models = collectionOfIDs.map(function(modelID){
    return localStorage.getItem(LOCALSTORAGE_NAME + '-' + modelID);
});

console.log('models stored under the collection myData are : ',models);


Hope this helps and have a nice day :)

var Collection = Backbone.Collection.extend({ localStorage: new LocalStorage('todos') })
var todos = new Collection
todos.fetch()