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Technologies like ASP. However, since the second version of Angular, Microsoft and Google have been working together to create Angular 2, and this is when my two favorite technologies started working together. In this blog, I want to help people create the best architecture combining these two worlds. Are you ready? Here we go! Of course, this is just my preference, and you can use the one you feel more comfortable with.
Why two different IDEs? Anyway, we will also see how to integrate Angular 5 inside the solution project, that will help you if you are the kind of developer who prefers to debug both back end and front with just one F5. About the back end, you can install the latest Visual Studio version which has a free edition for developers but is very complete: Community.
Let the fun begin! The first thing we need to do is install Angular CLI globally, so open the node. Okay, now we have our module bundler. This usually installs the module under your user folder.
An alias should not be necessary by default, but if you need it you can execute the next line:. The next step is to create the new project. I will call it angular5-app. First, we navigate to the folder under which we want to create the site, and then:. While you can test your new website just running ng serve --open , I do recommend testing the site from your favorite web service.
Well, some issues can happen only in production, and building the site with ng build is the closest way to approach this environment. Then we can open the folder angular5-app with Visual Studio Code and run ng build on the terminal bash:. A new folder called dist will be created and we can serve it using IIS or whichever web server you prefer.
Then you can type the URL in the browser, and…done! My src folder is structured as follows: Inside the app folder we have components where we will create for each Angular component the css , ts , spec , and html files.
We will also create a config folder to keep the site configuration, directives will have all our custom directives, helpers will house common code like the authentication manager, layout will contain the main components like body, head, and side panels, models keeps what will match with the back-end view models, and finally services will have the code for all the calls to the back end. Outside the app folder we will keep the folders created by default, like assets and environments , and also the root files.
This is where we can set all the values we will use in different places in our code; for instance, the URL of the API. This way, it will be easy to get the values just calling this. To install it, we just need to run the next three commands, which we can execute on the Visual Studio Code terminal:.
The second command is because some Material components depend on Angular Animations. I also recommend reading the official page to understand which browsers are supported and what a polyfill is. Now we can proceed to import the component modules we want to use in our app. Next step is to change the style. Angular Responsive will do the rest of the work for us. To do this we will create a layout folder and put inside it the app. But we will also create the same files for each section of the layout like you can see in the next image.
Then, app. Basically we will have an authentication property in the component which will allow us to remove the header and the menu if the user is not logged in, and instead, show a simple login page. Just a button to log the user out—we will come back to this again later. As for left-panel. We will also return to this later. But what about the TypeScript code for app.
We will leave a little mystery here and pause it for a while, and come back to this after implementing authentication.
Okay, now we have Angular Material helping us with the UI and a simple layout to start building our pages. But how can we navigate between pages? Inside the app folder we will create a file called app-routing. Here we are creating four paths:. Also, take a look at the canActivate parameter: Here we are creating a reference to the class AuthGuard , which will allow us to check if the user is logged in.
If not, it redirects to the login page. In the next section, I will show you how to create this class. Now, all we need to do is create the menu. Remember in the layout section when we created the left-panel. Here is where our code meets reality. To understand this error, allow me to refer to the official docs where it is really clear:. A routed application should support deep links.
A deep link is a URL that specifies a path to a component inside the app. There is no issue when the user navigates to that URL from within a running client.
The Angular router interprets the URL and routes to that page and hero. But clicking a link in an email, entering it in the browser address bar, or merely refreshing the browser while on the hero detail page — all of these actions are handled by the browser itself, outside the running application. The browser makes a direct request to the server for that URL, bypassing the router.
A static server routinely returns index. To fix this issue is very simple, we just need to create the service provider file configuration. So we create a file inside inside the src folder called web. Then we need to be sure that this asset will be copied to the deployed folder.
All we need to do is change our Angular CLI settings file angular-cli. Do you remember how we had the class AuthGuard implemented to set the routing configuration? Every time we navigate to a different page we will use this class to verify if the user is authenticated with a token. The file for this is canActivateAuthGuard. So every time we change the page the method canActivate will be called, which will check if the user is authenticated, and if not, we use our Router instance to redirect to the login page.
But what is this new method on the Helper class? Here we need to manage localStorage , where we will store the token we get from the back end. Is our authentication code making sense now? Take a look at this line:. Note that here we are calling a service class; we will create these services classes to get access to our back end in the next section. Finally, we need to go back to the app. Here, if the user is authenticated, it will show the menu and header sections, but if not, the layout will change to show just our login page.
Remember the Subject class in our helper class? This is an Observable. Observable s provide support for passing messages between publishers and subscribers in your application. Every time the authentication token changes, the authentication property will be updated. Reviewing the app. At this point we are navigating to different pages, authenticating our client side, and rendering a very simple layout. But how we can get data from the back end? I strongly recommend doing all back-end access from service classes in particular.
Our first service will be inside the services folder, called token. The token API does not need the token string in the header, but what happen if we call another endpoint? As you can see here, TokenService and service classes in general inherit from the BaseService class. So every time we make an HTTP call, we implement the header of the request just using super.
If the token is in localStorage then it will be appended inside the header, but if not, we will just set the JSON format. Another thing we can see here is what happens if authentication fails.
The login component will call the service class and the service class will call the back end. Once we have the token, the helper class will manage the token, and now we are ready to get the list of users from our database. To get data from the database, first be sure we match the model classes with the back-end view models in our response.
The first thing we need is to create an ASP. Now our architecture will be as we list below so will have to create the different projects:. In the previous section we created eight projects, but what are they for? Here is a simple description of each one:. In this section, we will see the basic configuration of token authentication and go a bit deeper on the subject of security. The code inside will look like this:. The values of the validation parameters will depend on the requirement of each project.
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Technologies like ASP. However, since the second version of Angular, Microsoft and Google have been working together to create Angular 2, and this is when my two favorite technologies started working together. In this blog, I want to help people create the best architecture combining these two worlds. Are you ready?
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First of all, I would like to thank all the readers who have read and voted for my articles. In the Beginner's Guide series, I have written some articles on state management. Probably this is my last article on state management. This article will give you a very good understanding of session.
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