lukas713 / mvc

learning MVC arhitecture using PHP

Building MVC framework with PHP

Project structure:

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  d-App
    d-Controllers
      d-Admin
    d-Views
    d-Models
  d-Core
    l-Dispatcher 
    l-Controller
    l-View
  d-public
    .htaccess
    l-index.php
   d-vendor
   

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Routing: how URLs are processed in n MVC framework

1. Create a central entry point to the framework: the front controller
2. Configure the web server to have pretty URLs
3. Get the controller and action from a URL with a variable structure, using regular expression

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Controllers and actions

1. Dispatch the route: create the controller object and run the action method
2. Load classes automatically: add namespaces and an autoload function. (with composer)
3. Remove query string variables from the URL before matching to a route
4. Action filters: call a method before and after every action in a controller

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Views

1. Display a view: create a class to render views and use it in a controller
2. Make views easier to create and maintain: add a template engine (with Twig)
3. Remove repetition in the view templates: add a base template to inherit from

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Models

1. Add a model, get data from the database and display it in a view
2. Optimise the database connection: connect only on demand and reuse it

Manage code using Composer

1. Install the template engine library Twig using Composer
2. Include all package classes automatically using the Composer autoloader
3. Replace the autoload function with the Composer autoloader

Error handling

1. Put application configuration settings in a separate file
2. Handle errors: convert errors to exceptions and add an exception handler
3. Handle errors: convert errors to exceptions and add an exception handler
4. Categorise different types of error using HTTP status codes
5. Add views to make error pages look nicer for users