![]() Yes, all of them! Getting all Objects from an EndpointĪs discussed before, we get a list of all objects of an endpoint, by sending a get request to that endpoint directly. For our example, we are going to create a cat-endpoint, possibly serving a database of all cats in the world. These crud-operations can be directly mapped to the database, for example mongodb, if you are using the MEAN-stack.Įnough theory for now, let's dive right into the code. The information of the object is added to the put-body.ĭelete: To delete an object, a delete request is sent to the endpoint with the identifier of the wanted object added to the route. The identifier is added to the route e.g. Update: To update an object, a put request is sent to the endpoint. If you are interested in one specific cat, you append the id/name of the cat to the route "cats/cat1". Read: To read all objects from an endpoint, e.g if you want to know about all cats, a get-request is sent to the "cats" endpoint. CRUD OperationsĬreate: To create a new object under an endpoint, a post-request is sent to the REST-Endpoint containing the new object to create in the post-body. ![]() Here is how the CRUD operations are modeled. This has an object-oriented touch to it,įor example, if I wanted to modify a cat in any way, the endpoint would be named "cats" or "cat", depending on who you ask. It uses standard HTTP-verbs like get, post, put & delete to express read, create update & delete (CRUD) operations.Īll these methods (verbs) are applied to one endpoint, which represents the object to be modified. I will try to keep this short: REST is a standardized way of building http-endpoints. But what is that exactly? Let's find out! This also automatically attaches the debugger to the process, which is quite useful.Īs I told you already, we are going to create a REST-API. If you are using Visual Studio Code, you can also start your server by hitting F5. Use the commandīecause npm has created a script inside of our package.json that is internally calling the node command. Let's generate the package.json file, by opening a command line interface in your server-application's directory. It keeps track of all dependencies of your application. It is also included in your angular projects. As an angular developer, you should be familiar with this file already. What this will do for us, is generate a new package.json file and fill in its basic structure. Now that we have everything installed, we can initialize a new npm-project. On Windows machines, you may need to restart your computer afterward. At one point, the wizard will ask if you want to install npm, as well. If you want to be on the save side, choose the long-term-support version (LTS).ĭownload the setup-executable and follow the instructions to install node.js on your computer. For this tutorial, it does not matter, which version you choose. You can download it at the official node.js website. To run a node.js application, we have to install node.js on our machine first. I like server.js, so let's go ahead and create that file in a new directory of your choice.ĭone! Not that hard, was it? Setting up the node.js Environment These files are typically called index.js or server.js. ![]() It is the entry point for our server application. To create our first functional node.js server application, we only have to create one file. That means we have to create our project files by hand. Unfortunately, there is no such thing as a node-cli. Then this guide to building a REST-API with ASP.Core is for you!Īs angular developers, we are used to generating our project structure with the angular-cli. Try GraphQL with Angular Apollo & Express instead! is a REST-API?"ĭon't worry, we will come to that, as well! We will not only create our first small server-application, but also create a functional REST-API to serve our data.Īfterward, we take a close look, how we can utilize our new API, to request and send data from any angular application. In this tutorial, we will take a look at creating server-applications with Node.js and the Express framework in relation to angular. We may receive a commission for purchases made through this link.
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