You should not use the type keyword as the column name because it is a reserved word for ActiveRecord. But if you really want to use it, for any reason (like if you don’t have control on the DB structure), here is what you should do: First, make sure your Movie model inherits from the … Read more
In Sprockets 3, .self.css is added because you have the config.assets.debug = true config set (not the digest config, that’s unrelated). If you add the following to your development.rb or production.rb file, it will work as you expect: config.assets.debug = false
If Papertrail is causing a problem, try a different add on. I’ve been using LogEntries without much of a problem. https://addons.heroku.com/#logging Also try to lower your Unicorn worker processes so it uses lower total memory. Instead of the default of 3 (per box/dyno), try 2. https://devcenter.heroku.com/articles/rails-unicorn#unicorn-worker-processes You can also run a memory profiler on your … Read more
You use a separate global connection pool for your application code. Put something like this in your redis.rb initializer: require ‘connection_pool’ REDIS = ConnectionPool.new(size: 10) { Redis.new } Now in your application code anywhere, you can do this: REDIS.with do |conn| # some redis operations end You’ll have up to 10 connections to share amongst … Read more
before_action (formerly named before_filter) is a callback that is performed before an action is executed. You can read more about controller before/after_action. It is normally used to prepare the action or alter the execution. The convention is that if any of the methods in the chain render or redirect, then the execution is halted and … Read more
The solution is running the code below to start your server: rails s -b 0.0.0.0 I found this solution from another post about same problem. The answerer said ‘You’ll want to make sure that the server is binded to 0.0.0.0 so that all interfaces can access it.” I hope this post helps people who encounter … Read more
(1) &. is generally shorter than try(…) Depending on the scenario, this can make your code more readable. (2) &. is standard Ruby, as opposed to try The method try is not defined in a Ruby core library but rather in a Rails library. When you are not developing a RoR web app but instead … Read more
Not sure, if it will work for everybody, though all my virtual box machines see host machine by this “magic” ip: 10.0.2.2 Don’t know if it’s always static, though for me works and it’s very convenient – I can use laptop at home, from office – having assigned different IPs to me by routers, but … Read more
In Rails 5 you have to throw :abort otherwise it won’t work. (even returning false) Also, you should add prepend: true to the callback, to make sure it runs before the dependent: :destroy on the parent models. Something like this should work: class Something < ApplicationRecord before_destroy :can_destroy?, prepend: true private def can_destroy? if model.something? … Read more
For you app to work locally you need to: Install Postgresql on your machine Create a database for your development needs (let’s call it my_app_development) Change your database.yml to: default: &default adapter: postgresql encoding: unicode # For details on connection pooling, see rails configuration guide # http://guides.rubyonrails.org/configuring.html#database-pooling pool: 5 development: <<: *default database: my_app_development run … Read more