In the sample-app generated earlier each model was defined manually with JavaScript for full control. It’s worth noting that json files for models is just a default way to store models. After completing the prompts, a new model will be added to the /common/models models folder called Person.json This is a very simple interactive guide to define your model fields. Required? No // Hit Enter to accept default (not required) Property type: string // Hit Enter to accept default type, string Property name: Name // Name the first property in the model Custom plural form (used to build REST URL): People //Hit enter to accept default Enter the data-source to attach Person to: db (memory) // Hit enter to accept default Node_modules contains minimum dependencies you need to get your starter application to run. json files under /common/models and model-config.json retains the mapping of models to data-sources. There is a placeholder for a client Javascript application under /clientĭatasources.json stores the backend datasource settings while the config.json has the application host and port settings. There’s some LoopBack magic happens to help you get started faster following convention over configuration mantra that Rails users are accustomed to. If you already have experience with express.js module, the file will look very familiar. Server.js is our main file here where the whole application is set up. node_modules/loopback-datasource-juggler If you are in a folder with package.json and want to install all packages it lists, simply type: In reality, package.json is a very powerful tool that can be used to run hook script, publish author information, add custom settings and so on.īecause package.json is just a JSON file, any property that isn’t understood by Node or NPM is ignored and could be used for your own needs. On the surface it works similar to Gemfile in Ruby and contains list modules that your project depends on. To help you manage project dependencies Node introduces package.json as a core concept. The modules folder is a core Node concept that allows programs to load installed packages and I encourage your to read and understand the manual on this subject. One of the differentiating factors between NPM and GEM is that NPM installs all packages in the local node_modules folder by default, which means you don’t have to worry about handling multiple versions of the same package or accidental cross project pollution. After you have setup Node and it’s in your system path, the npm command becomes available and you can have any of the 70k packages currently published installed with just one command: Such is the case for package management and NPM is Node’s alternative to GEM. Most of the concepts found in Ruby translate well to Node. In the interests of keep this article to the point, I’m going to refer you to the NVM manual for installation instructions (which are pretty much the same as RVM). You can easily have multiple versions at the same time.Everything is kept neatly in your user home directory.NVM is a preferred way to get Node on your development machine for all the same reasons as RVM: Node has a version manager called NVM which is almost a feature for feature port of Ruby’s RVM sans a cool web site. Using Node Version Manager (my preferred way).Download source or binaries and install manually.Lets check it out, but first things first… Installing Node LoopBack by StrongLoop aims to be all encompassing solution, similar to Rails. There aren’t that many frameworks that try to deliver Rails experience for Node. The MEAN stack allows you to use JavaScript literally everywhere: server, database and client. There’s also something pretty damn cool about going through the whole day without constantly switching context between Ruby and JavaScript. You are probably curious about Node and how to possibly make a transition from Ruby on Rails. PayPal is slowly rebuilding their front-end in Node. eBay has been running a production Node API service since 2011. Walmart is running their entire mobile site on Node, which is currently the biggest Node application, traffic wise. You’ve likely heard in the past few months that some big companies are starting to deploy Node applications in production and at scale. All the while drawing parallels between Node and Rails commands. We’ll cover installing Node, the StrongLoop CLI, look at an example LoopBack application plus how to start out on your own. What’s LoopBack? It’s an open source framework for easily developing APIs in Node and getting them connected to databases like MongoDB, MySQL, Oracle and SQL Server. In this article we are going to do a quick introduction to Node.js and LoopBack for Ruby on Rails minded developers.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |