validates_uniqueness_of :name, :case_sensitive => false does the trick, but you should keep in mind that validates_uniqueness_of does not guarantee uniqueness if you have multiple servers/server processes (e.g. running Phusion Passenger, multiple Mongrels, etc) or a multi-threaded server. That’s because you might get this sequence of events (the order is important): Process A gets a request … Read more
Domain and model objects are essentially the same, and may contain business logic. Depending on implementation, domain and DTO objects may be equivalent if you remove business logic from the model into a service class. Often a key variant of the DTO is the View Model, which is used purely to transfer data between the … Read more
In rails 4.x and later (rspec-rails 3.1.0 and later) add this to the top of each of your spec files: require “rails_helper” # this not require “spec_helper” # not this
You could use lists() : test::where(‘id’ ,’>’ ,0)->lists(‘id’)->toArray(); NOTE : Better if you define your models in Studly Case format, e.g Test. You could also use get() : test::where(‘id’ ,’>’ ,0)->get(‘id’); UPDATE: (For versions >= 5.2 use ‘pluck()’ instead) The lists() method was deprecated in the new versions >= 5.2, now you could use pluck() … Read more
As Kris mentions, you can use the $resource service to interact with the server, but I get the impression you are beginning your journey with Angular – I was there last week – so I recommend to start experimenting directly with the $http service. In this case you can call its get method. If you … Read more
Just change the first line as follows : include ActionView::Helpers that will make it works. UPDATE: For Rails 3 use: ActionController::Base.helpers.sanitize(str) Credit goes to lornc’s answer
The definition of these terms is quite ambiguous. You will find different definitions at different places. Entity: An entity represents a single instance of your domain object saved into the database as a record. It has some attributes that we represent as columns in our tables. Model: A model typically represents a real world object … Read more
Query has a get function that supports querying by the primary key of the table, which I assume that id is. For example, to query for an object with ID of 23: User.query.get(23) Note: As a few other commenters and answers have mentioned, this is not simply shorthand for “Perform a query filtering on the … Read more
When you generate a model, it creates a database migration. If you run ‘destroy’ on that model, it will delete the migration file, but not the database table. So before run bundle exec rails db:rollback rails destroy model <model_name> For rails versions before 5.0 and higher use rake instead of rails bundle exec rake db:rollback … Read more
2019: Update on Differences and Usages First, there is the obvious difference: syntax. This is a simple, but necessary to understand difference: Interface properties can end in commas or semi-colons, however class properties can only end in semi-colons. Now the interesting stuff. The sections about when to use and not to use may be subjective … Read more