Application Structure API Consumed by Mobile & Web (React, Angular, etc) - ios

I'm building an API that's intended to be consumed by an iOS app as well as a browser-based Web Application (using React / AngularJS). The API is being developed in Laravel.
What is the best way to structure this? Should the API and the Web Application be apart of the same Laravel Application, or should the API be an entirely separate entity that just returns JSON to whatever client requests it? In that case, I suppose my Web Application would interact with the API as though it were a 3rd party API

We we've had a grown monolithic application and decided to split the code up, into repositories called "core", "frontend" and, new to our family, added "api".
That is, we are using the Microservice pattern and it works well for "us".
Our core/frontend repositories are CakePHP but the API is written in Laravel 5 using the jsonapi 1.0 spec.
We're quite, if not to say, very happy with this approach. The only canonical thing it the representation in the database. Business logic and code is redundant. But an interesting lesson learned is that we uncovered quite some bugs due this in the existing code base.
The clean separation is important to not be bound too much to one technology. We may want to replace the "frontend" stack with a node application talking to the API. We may want to replace the API with something else later.
Of course this comes with huge amount of work, resources, etc. but not being able to act due a monolith is worse in our view.

Related

Transpiling ActiveRecord objects to TypeScript types for non-mono repository

I've recently started development on what will be come a rather large mobile application (React Native) that consumes a Ruby on Rails API (in API mode).
On the frontend I've used TypeScript extensively throughout the code but I am having issues with how to approach building types and interfaces for data received through API requests. I've heard about transpiling C# database models into TypeScript types - but I can't find anything similar for Ruby on Rails. The only thing I've been able to find is how to handle types in mono-repos where both the frontend and backend is in a single repository.
I could build my types manually on the frontend but I feel like this wouldn't be sustainable over the long term, especially when new developers join the project.
Is there any gems out there for this or would I have to write it myself? Am I approaching the issue incorrectly?
I could build my types manually on the frontend
This is probably the best choice as it encourages decoupling between the frontend and the backend API application. The whole idea of automatically generating front end code based on your database sounds good in theory but your frontend is not talking directly to the DB - its talking to your API and should have no knowledge of the underlying data storage which is an implementation detail of the API.
This is also the reason why you only see this attempted in a monorepo - it requires a tight coupling which is very undesirable. If the backend schema changes it will break clients - which would not occur if they simply communicate through a versioned API. As long as the API remains consistent the clients are isolated to a very large degree from changes on the backend and can occur in tandem.
You also have to take into consideration that ActiveRecord is extremely dynamic compared to anything written in C# and most other frameworks. Model attributes are automatically definined at runtime by reading the schema directly from the database - its all superninja level metaprogramming. So you can't use any form of static analysis to create fronend code from the backend code alone.

Approach to create service oriented application for MVC application using Web Api

I am planning to create a service oriented application. For creating service I will be using WebApi and for web application MVC.
I have thought of two approach for the same kindly let me know which one better.
Create one business logic shared across MVC and WebApi and dont consume WebApi in MVC application. Just business logic will be shared.
Consume API in MVC application from WebApi project using HttpClient.
The question was a bit unclear but now, after comments it makes more sense.
I would go with option 1.
The first reason is that you can avoid a lot of traffic to the API if you can simply use the layer and don't bother with any APi calls at all.
The second reason, it will be a little quicker since it doesn't need to wait for the API responses.
Less pressure on the API means the mobile app has more resources to play with.
You can basically build your own Nuget packages, use them in both your Web and Api layers and you don't have to repeat the code.

Necessity of Web APi in MVC Web application

I am quite perplexed over the use of Web Api in a MVC application being developed at my company.I recently joined the project and wondering why they are using this.The application uses JQuery AJAX functionality to pull data for each Tab in a MultiTab Page without refreshing it.
The application here is neither providing data service nor consuming any Web API service.This can be easily achieved without using REST verbs.It is directly connecting to database like a typical web application.
I am holding back myself to raise this question with the team since I haven't used Web API much but has a conceptual idea.
Am I missing something here ?
Microsoft's Web API MVC technology is typically used for external components to interact with the system - not generally a requirement for a standard MVC Web Application.
With that said, I'm not perfectly clear on the architecture. A few points of note:
jQuery AJAX is a perfectly valid (and usually preferred) method to retrieve information for tab pages - it provides a SPA (Single Page Application) "feel" to the site and generally improves performance all around. This does not mean that they're using a Web API
MVC is a framework used for many web applications, including Microsoft's Web API projects as well as ASP.NET MVC Web projects. The use of MVC doesn't mean that they're using a Web API.
A RESTful approach isn't just for Web APIs. Indeed, many find it a cleaner approach when using regular MVC Web Applications, as it tends to be more semantic to what actions are actually being performed (GET to get a view, POST to post data, DELETE, etc.) There's no real reason not to use REST verbs (which are actually just HTTP verbs, but called "REST" when we use them in a certain way). The use of HTTP verbs doesn't mean that we're using a Web API.
To conclude, The MVC Web API framework is it's own technology that's similar to MVC Web Applications, but more geared towards working with non-visual requests and responses, instead tailored to programmatic interfacing.
If this is indeed a Web API being used and not a case of MVC practices that you happen to be unfamiliar with, then yes, I think it's a good question to raise (at least from a technical standpoint - politically, maybe not, but we can't answer that for you).
A typical setup is to have multiple projects, one of which is a Web Application, which makes use of shared project(s) for domain/business classes and data persistence. Additionally, a Web API project is often used to provide access to the system for external components, but this is a separate "presentation layer" project from the aforementioned Web Application.
There may be cases where a Web API application is written as the core interface between the internal system and the rest of the outside world, where the MVC Web Application then interacts with the Web API, but this is a corner case that should only be done with specific reason, in my opinion (unless I misread, this seems to be the case you're stating?)
Using both MVC and WebAPI together in a ASP.NET Web application is quite common. Whilst you can provide HTML through WebAPI and you can provide JSON through MVC it's much cleaner to use the best technology for each.
WebAPI in particular lets you define an API once and then generates JSON, XML, ... for you based on the request.

Best API Strategy for nopCommerce 3.x (MVC vs WebAPI vs ServiceStack)

We are trying to determine the best approach for adding a complex API layer to a modified version of nopCommerce. To back up a step, we're building out a custom site for a fashion/apparel manufacturer that has a lot of front-end application requirements and also needs to integrate with their cross platform apps (iOS, Android, Windows) which we're building with Xamarin. We've tentatively decided to start with nopCommerce as the base of our application to which we will add an API layer.
What we are unsure about is what is the best approach for implementing this in nopCommerce (or other similar .NET package)? The options we are considering are MVC vs WebAPI vs ServiceStack. We've been going thru many of the tutorials on PluralSight.com to get up to speed on app dev and API creation best practices, but there seem to be so many options, we're not sure where to start. We seem to be somewhat lost in a sea of implementation options for the API and how each is to be evaluated based on choice of the JS packages/frameworks used on the front-end for the web site and the tools chosen to create the apps.
If it matters, our basic requirements are:
Expand core of basic e-commerce package with some custom ERP style functionality
API layer that can work effectively with both a web front end (possibly as a SPA) and all cross platform apps built using Xamarin
Insure OAuth authentication across all interface types so we can just use social media logins consistently everywhere and can authenticate the user in any environment
Given this...
My question boils down to which of the three API methods (MVC vs WebAPI vs ServiceStack) is best for this?
In my humble opinion you should go with service stack, it´s easier to implement and a lot more flexible than web api, you can add/remove plugins for different functionalities you get a lot of infrastructure code OOB such as mechanisms to handle cache, loggers and other not just related to infrastructure such as validators and IOC container, etc.
you'll get a single mechanism for authentication including custom auth, oauth, oauth2, etc which works for linked in, facebook and google +, in that situation you´ll find yourself reusing a lot of code in across all your apps.
One other thing that I like about SS is that practically is just you and your IOC, nothig else, everything is quite simple to understand and to implement (there could be more than one hidden option or configuration you may miss in the documentation but you get a lot of support from the community in google groups or stackoverflow)
its easier to test (Unit testing) you already have abstractions for httprequest and httpresponse and a lot of more, you won´t find yourself doing wrappers for all the legacy web impl that are shipped with mvc.
SS is better than mvc web api in terms of performance, it got one of the fastest json serializers out there for .net
I´m working on a SPA app for the time beign and I have no regrets about my desition to get into the SS framework.
just my 2 cents.
I would say Web API is best option for the Services Layer
- http://www.asp.net/vnext/overview/aspnet-web-api
There are many advantages
- Web API has been in release cycle as separate component with latest features
- Security
- Versioning
- Attribute based routing
- OData integration

How to have iOS app communicate with database server?

I have a database on a database server. No web service in place to be consumed by a web application.
If I want my iOS app to communicate with a database server (send & receive data), I know I can create a web service and then call that service from my iOS app. But what web service is recommended for this? Should I just write a .asmx web service in .NET or should I go for MVC WEB API or may be go for WCF ?? I have spend hours doing research on this. Please help.
A lot will depend on where you expect the service to be hosted, and what technology stack(s) are supported by the host. If you are self-hosting, then do whatever works in the technologies you know and understand. If you want to use a host that targets its services to small-to-midsize independent development teams, many providers like Heroku support things like Rails services. PHP is always an option as well. Microsoft-based solutions and Java-based solutions tend to be more widely used in larger enterprises and data centers, and if that's where you'll host your service then these would also be good options. And of course I'm speaking in broad generalities here: For any general trends I might list here there are lots of exceptions where other approaches make sense.
If you'd rather let the decision be driven by what makes things easiest for your iOS code, I would recommend you start with server-side technologies that support REST-ful interfaces using JSON to represent your service's resources. REST-ful services are very easy to consume from iOS, and JSON-based representations of resources are very easy to parse and produce in Objective-C.
I am personally used this approach to set a direction for my app. For the service side, I am going with a Rails implementation of REST-ful web services. I'm a Java developer by profession, but for a small independent project the options for hosting Java services were more limiting than with Rails so I've picked up rails on the side to make my project work. So far it's suited my project quite well.

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