Using bundler instead of gem command to directly install your gems gives you a whole lot of benefits. In this specific case where you suggest using the gem command to install and adding it later to the Gemfile, bundler will resolve all the dependencies for you when you install a gem, which you might have … Read more
So it’s complaining that the version of bundler installed on heroku is older than the version you used to create your Gemfile.lock on your dev machine. You can probably just ignore the warning — in most cases installing with a slightly older version of bundler than you used to create the Gemfile.lock is just fine. … Read more
ActiveResource was an API added in Rails 2.x to support an XML (and later JSON) API so that Rails sites could “talk” to one another. It was a very hot topic when the idea of RESTful APIs made its way into the framework. Over time it became more of a novelty and infrequently maintained so … Read more
Yes in this case @user.reload.email and @user.email is the same thing. But it’s good practice to use @user.reload.email instead of @user.email to check what is exactly saved in the database i mean you don’t know if you or someone add some code in after_save which changes it’s value then it will not have effect on … Read more
Though a lot of classes treat bang methods as “a method that modifies the object in place”, I like the description of bang methods from the Eloquent Ruby book better: In practice, Ruby programmers reserve ! to adorn the names of methods that do something unexpected, or perhaps a bit dangerous So in this case, … Read more
Your user model probably has validations which are not satisfied. Since you’ve not posted those I’m unable to really solve your question. To make live easier you can debug why your user isn’t willing to save. Try running user.errors.full_messages which should give you a hint what’s going wrong.
Just in case none of the above satisfies the next intrepid explorer, I thought I’d drop here that after I spent 4 hours on this doing variants of the search that landed me here, I finally discovering that IPV6 was the culprit, after finding this specific thread on help.rubygems.org. Solution? this (Fedora, Linux): sudo sysctl … Read more
Ruby treats ? and ! as actual characters in a method name. respond_to and respond_to? are different. ? indicates that this should respond with a true or false (by convention; this is not a requirement). Specifically: respond_to? is a Ruby method for detecting whether the class has a particular method on it. For example, @user.respond_to?(‘eat_food’) … Read more
Adding include Rake::DSL to the Rakefile before the applications load_tasks were called also worked for me. So in the above user’s case before the DemoApp::Application.load_tasks in the Rakefile.