ruby-on-rails-3.2

While migrating a rails 2 app to rails 3 I encountered a huge increase in memory used. After some research I found out the helpers were the problem. Uncommenting any helpers in the view would speed everything up. Things I tried to find the real issue: include_all_helpers = false disable parts of the helper files clean up the code by refactoring Model.all usages to some faster code I got a theory now that some helpers might be renamed or deleted, rails starts to search for them and starts searching models / controllers as rescue. A page request takes up to 5 seconds and using 2 GB of memory.

I have a Rails app that protects the uploaded videos putting them into a private folder. Now I need to play these videos, and when I do something like this in the controller: def show video = Video.find(params[:id]) send_file(video.full_path, type: "video/mp4", disposition: "inline") end And open the browser(Chrome or FF) at /videos/:id it doesn't play the video. If I put the same video at the public folder, and access it like /video.mp4 it will play. If I remove the dispositon: "inline" it will download the video and I can play it from my computer. Samething happens with webm videos. What am

For my life I trying to find out why are my callbacks are not getting executed sometimes (you heard it right sometimes as most of time it works out of the box) All I have is parent/child relations between 2 models upon creation of child record all I'm doing in after_create callback is update(accumulate all child amount in parent field to avoid heavy query at run time) the amount field in parent table/ model record Parent model( Payout ) Child model is ( Sales Transaction ) Payout has_many SalesTransactions as said above upon creation of sales transaction I'm updating(incrementing to be precise

I'm new to Rails and was following Ryan Bate's tutorial on how to make a simple authentication system ( http://railscasts.com/episodes/250-authentication-from-scratch?autoplay=true ) and I was just going through it but got this error: ` NoMethodError in UsersController#new undefined method `key?' for nil:NilClass Rails.root: C:/Sites/authentication` I don't really know what this means since I'm just a beginner, but these are my files: users controller: class UsersController < ApplicationController def new @user = User.new end def create @user = User.new(params[:user]) if @user.save redirect_to

I am trying to implement a HABTM checkbox in a nested form. Currently, I have 3 models. Subject, lesson and groups. The associations are as follows: Each subject has many lessons. Each lesson has and belongs to many groups. Right now, I am trying to implement them all on a single creation and edit form. Such that a lesson is nested in the subject and for each lesson there is a list of group check boxes to implement the HABTM relationship. I am facing trouble implementing the HABTM relationship as there are many lessons per subjects and I am not sure how I could distinguish between the

I would like to get the records that have their created_at date closest to the current date. How can I do this with active records' where clause? You could find the closest record in the past with something like: Record.where("created_at <= ?", Date.today).order_by("created_at DESC").limit(1) Similarly, you can have the closest record in the future Record.where("created_at >= ?", Date.today).order_by("created_at ASC").limit(1) And then compare wich one is the closest to current date... There may be a solution to do it with a single request, but I could not find how (if you're using SQL server,

In my Rails 3.2 app, I'm trying to use config.exceptions_app to route exceptions through the routing table to render error-specific pages (especially one for 401 Forbidden). Here's what I've got so far for configuration: # application.rb config.action_dispatch.rescue_responses.merge!('Error::Forbidden' => :forbidden) config.exceptions_app = ->(env) { ErrorsController.action(:show).call(env) } # development.rb config.consider_all_requests_local = false # test.rb config.consider_all_requests_local = false And now the meat of the matter: module Error class Forbidden < StandardError end end class