AWS

Cài đặt ActiveStoragerails active_storage:installrake db:migrate Gemfilegem "image_processing" app/models/article.rbhas_one_attached :image app/controllers/articles_controller.rbdef article_params params.require(:article).permit(:image) end app/views/articles/_form.html.slim= f.label :image = f.file_field :image, accept: "image/png, image/jpg, image/jpeg, image/gif" app/views/articles/show.html.slim- if @article.image.attached? = image_tag @article.image.variant(resize: "640x480^",...