How to Upload to Carrierwave with JavaScript - Cognizant Quick Left
Carrierwave makes it easy to attach files to Rails models, but all the uploading magic operates synchronously. If you're using Backbone and want to keep model updates asynchronous, it may seem like you're out of luck. You're not. The new XMLHttpRequest, which you may know better as AJAX, supports an interface called FormData. This uses the same format as a synchronous form submitted with its type
Rails jQuery Ajax Upload Image | Professional Programmer
Easy Implementation There are a lot of library for this. The goal is to realize drag and drop image and update model as binary. Model book class CreateBooks < ActiveRecord::Migration def change create_table :books do |t| t.string :ename, null: false # English name t.string :cname, null: false # Chinese name t.string :uuid, null: false # UUID t.binary :photo # Image t.timestamps end add_index :book
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