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Displaying Episode 25 - 48 of 387 in total
In this episode we look at customizing the table and columns that Fluent creates for us. In addition to customizing our column data types, we'll also have to lean on an extension of Postgres to generate UUID values for us. We'll see how to customize some of the column constraints to suit our needs, and then create a development route to test it all out.
In this episode we set up a new Vapor application to use Postgresql as the database. We'll see how to configure FluentPostgreSQL, how to create and set up a connection to the database, and look at the defaults for PostgresSQLModel. We'll also discuss the pros and cons of using UUID primary keys over auto-incrementing integers.
We continue building out our little promise library, this time adding an ensure method, refactoring how we call the callback blocks, and fix a race condition issue by triggering callbacks even if the value has already been provided.
Promises are a useful way of turning async code and writing it as if it were synchronous. In this episode we'll create a promise library from scratch so we can see how they work under the hood.
In this episode we take a deeper look at one of the fundamental building blocks that support Vapor's asynchronous programming model: Futures. Understanding Futures is really important to understand when writing Vapor applications.
Now that we have Fluent set up, let’s see how we can use it to add, update, and delete records to the database. We’ll get a taste for how futures work in Vapor, and we will also see some of the builtin features that Vapor has to make loading records from your routes really simple.
Most server applications will need to store some data in a database. For Vapor applications, this is done with Fluent, a Swift Object-Relational-Mapper for persisting objects to a database. Fluent supports SQLite, Postgres, and Mysql. In this episode we will learn how to set up Fluent with a SQLite database for development. We'll create our first model object, and discuss how Fluent supports migrations for evolving the database schema over time.
In this episode we configure our iOS app to receive push notifications, adding the OneSignal SDK to our project, configuring the Notification Service extension, and testing it out on a real device.
In this episode we look at how to generate a certification for adding push notification support for your app, using OneSignal as our push notification provider
Let's take what we have learned and build a simple web app. We'll leverage NSLinguisticTagger on the server and built a small UI that extracts names from provided text. We'll lean on everything we have used so far in this series: routes, templates, master templates, context data, and a little CSS to make the UI look nice.
With special guest Yono, we dive into the system for text-to-speech and speech recognition on iOS. Yono builds an app for language practice. Along the way we become familiar with AVAudioEngine, AVSpeechSynthesizer, and SFSpeechRecognizer from the Speech Framework.
When working with web pages, you will almost certainly want to share a considerable amount of HTML. By nesting templates inside of master templates, we can share common HTML structure, layout, and share styles and scripts. We will see how to define sections that can be customized inside of your templates, as well as how to extract common components into partials that you can embed inside of other templates.
Leaf is Vapor's component for rendering dynamic templates. Rather than writing HTML strings by hand in our router, we can write leaf templates that allow us to mix HTML with code. Since Leaf is a separate package, we will show how to integrate this into your project from scratch, to get an overview of how dependencies are assembled in a Vapor project.
Vapor uses a router to determine how to process incoming requests. In this episode, we will see how to define routes and how to return simple responses. We will see how to return custom JSON responses, how to accept JSON posts, and how to deal with requests with dynamic parameters.
In this episode we'll learn how to install the vapor tools, how to create new projects, and look at how projects are structured.
Signposts are a special part of the Unified Logging and Activity Tracing system. They allow you to mark point-in-time events that occur in your code, or track the duration of operations by specifying the begin and end for an activity. These can be visualized in Instruments to get a rich, high level view of how these operations are performing, how often they are occurring, and how long they are taking. In this episode we will see how to add signposts to an app and how to view these signposts in Instruments.
Activity Tracing can help give you the big picture when looking at logs. By marking logical activities with os_activity, you can create a hierarchy of tasks that roll up the log statements that occurred for that activity. Unfortunately, using os_activity from Swift is not really supported yet, so we will see how to use a wrapper to make it a little easier, then dive in deep into C interop to see how all the pieces work.
Console.app is a nice way of viewing logs, but most of this power (and more) is builtin to the log utility from the command line. In this episode we will see how to stream debug logs from the simulator, as well as how to retrieve logs from customer or tester devices out in the field by triggering a sysdiagnose.
In this episode we talk about public versus private data (and how to change the defaults). We also look at using the log command line tool for a deeper understanding of the unified logging system and how we can tweak it for our needs.
In this episode we show how you adopt the Unified Logging framework in code by using the OSLog type to define your log subsystems and categories, and how to use os_log to actually log events and messages.
A high level overview of the new Unified Logging system, which covers the benefits of the new system, a high level overview of how it works, and some things to consider when adopting the new system.
In this episode we will intercept and stub image requests to prevent our tests from making network calls when interacting with our view controller.
When running your unit tests, you may have noticed that your application continues to launch in the simulator. In this episode we'll talk about why that can be problematic and what you can do to mitigate this issue from interfering with your tests.
We continue testing our view controller, this time focusing on the UITableViewDataSource implementation. Testing the number of rows returned is easy, but we can also test that the controller returns the appropriate cell and that its outlets are configured properly.