ruby-on-rails-3

问题 How can I convert the Forum application I've been developing into a Rails Engine, so that it may be embedded inside other applications? What should I add, keep, or remove? Should I offer a way to integrate the models? How do I set up routes and user configuration? How do I package it into a Gem? What should I watch out for? After reading the articles and the documentation, I managed to narrow down my questions: Should I namespace the models? That is, should I keep them in my Engine's module

问题 I'm upgrading an application to use the asset pipeline. I've got the css assets compiling into an application css file but they not being found when I run the application in production mode with RAILS_ENV=production bundle exec rails s and I visit any page I get the correct output from the database but no styling and the log shows: ActionController::RoutingError (No route matches [GET] "/assets/default.scss-1a27c...f07c.css"): Even though that file exists in public/assets $ ls public/assets

问题 I'm upgrading an application to use the asset pipeline. I've got the css assets compiling into an application css file but they not being found when I run the application in production mode with RAILS_ENV=production bundle exec rails s and I visit any page I get the correct output from the database but no styling and the log shows: ActionController::RoutingError (No route matches [GET] "/assets/default.scss-1a27c...f07c.css"): Even though that file exists in public/assets $ ls public/assets

问题 I've been looking for a way to set up Ruby on Rails 3.1 with Paperclip and jQuery fileupload. Looking at a tutorial at jQuery fileupload page I got the system set up but I can't find a way to make paperclip process the uploaded file. Here's what I have (in short): # model has_attached_file :photo ... # view = form_for @user, :html => {:multipart => true} do |f| f.file_field :photo, :multiple => true f.submit # controller def create @user = User.new params[:user] if @user.save render :json =>

问题 I'm working with Spree, which uses Rails engines extensively. A common pattern I find is this. However I have trouble understanding this code. class Engine < Rails::Engine def self.activate ... end config.to_prepare &method(:activate).to_proc end What does .to_prepare do What does the &method operator do? What is the overall effect of the code? Many Thanks! 回答1: &method(:activate).to_proc This is best consumed one item at a time. (It should be noted that this portion of the code is 100% non

问题 I want to create a web widget that will display information from my site. The widget will be included in the client's website HTML using JavaScript, and should only be usable for my clients -- web sites that were registered at my site. The information in the widget should be specific to the user who is currently visiting the client's site. So, I need to authenticate both the client (website owner) and the resource owner (website visitor). This seems to map nicely to OAuth 2.0, but I couldn't

问题 Twitter Bootstrap icons are pretty deadly seen here. Look at the bottom right hand corner of that section. See that email with an icon prepended? That is what I want to do. I want to make simple_form and boostrap play nicely. Here's what I've found that will prepend the icon to the input: = f.input :email, :wrapper => :append do = f.input_field :email <span class="add-on"><i class="icon-envelope"></i></span> But it isn't flush (that could be fixed by changing offsets in CSS) and it's pretty

问题 I tried storing a local image in a rails console. Because I have many pictures in my local storage (I use crawler to download tons of pictures), I want to store them into a database, with the benefit of paperclip to do some image job, like thumbnail etc. If I use a webpage to save new pictures to database one by one, it will cost a lot of time. So I want to find a way in rails console (some code) that can batch save-picture-into-database. 回答1: To further clarify @andrea's answer:

问题 I tried storing a local image in a rails console. Because I have many pictures in my local storage (I use crawler to download tons of pictures), I want to store them into a database, with the benefit of paperclip to do some image job, like thumbnail etc. If I use a webpage to save new pictures to database one by one, it will cost a lot of time. So I want to find a way in rails console (some code) that can batch save-picture-into-database. 回答1: To further clarify @andrea's answer:

问题 My goal: I am trying to allow users to embed a link to a Youtube video in my site, while giving me control over the player's settings. I would like to do this by only asking the user to supply the link (not the entire embed code), from where I can somehow paste that link into the embed code. I've tried doing a simple substitution with a few Youtube links ( http://youtu.be/... ) but they don't work, saying 'movie not loaded'. Is there a dependable way to do this? 回答1: I do this quite often for