app VS di

The application is configured section of the params configuration file:

In params.php file you can define the locale identifier:

This ApplicationParameters.php allows you to globally configure some important parameters of your application, such as name and charset, you could also add any parameter you need.

Step 4: We modified our param.php config file.

Step 1: We install the application template to use in this case app .

Add support `SubFolder::class` middleware. by terabytesoftw · Pull Request #269 · yiisoft/app (github.com)

Let’s review this example, to use bootstrap5 in our app template.

**Yii Application Template:** [Template Yii3](https://github.com/yiisoft/app)

App template for Yii Framework v.3, provides a web and console environment, with minimal configuration, to create projects quickly.

Take a look at the configuration, and you'll see that changing it is as simple as changing a parameter in params.php, we've developed the right tools, that will do the job for you, that's simplicity.

The language is not that important, if you know Php, you learn another one in weeks (not you, Rust!) important and source of income is the knowledge of Design patterns and for what implementation to use which specific Pattern. PHP have a great ecosystem regarding design patterns. As there are the psr. Mostly, the Frameworks implement these recommendations: - dependency injection in Symfony, yii and spiral - Data Mapper implemented in doctrine or in cycle-orm.

Version released.

Now that we are clear about the concepts of configuration, container di and factory, let's see the complexity of creating an app.

Using the container di: Usage of the container di is fairly simple: You first initialize it with an array of definitions. The array keys are usually interface names. It will then use these definitions to create an object whenever that type is requested. This happens for example when fetching a type directly from the container somewhere in the application. But objects are also created implicitly if a definition has a dependency to another definition.

Now that we understand the concept in our next post, we will fully describe our configurations, and explain in detail the use of the container di and the factory.

Yii Dependency Injection 1.0.0