Posts
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laravel form handling with event-driven code
Hello guys, how many times you have created a form that has to handle many complicated tasks? If the answer is “many” i have one way for handling that in a very fashioned way based on events using laravel framework 4+. The proof of concept in OOP is the “Chain of responsabiity” design pattern. Imagine now that when we process a form we want to execute a list of action consequently, in the case one of them would fail we will return an error, otherwise we return a success message. As an example i will show you how to create a simple contact form. What that form should handle?
- Validate user data
- Save user data into db
- Send email to the contact mail
- Eventually send a notification mail to the user
- Some other stuff
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Php class table inheritance
In the previous article i talked about Single table inheritance which is one of the four ways to map inheritance into RDBMS (Relational Database Management System). As stated in the other article this pattern comes from Marwin fowler PoEAA Book. In this one we talk about Class table inheritance. Class table inheritance is an approach that consist in creating a table for each class in the object-model. To explain that let’s use the example used in the other post: imagine the hierarchy of animals and in particular dogs and cats, they both are pets and but they are also animals. Imagine now that every animal have the attribute sex, pet have name and dog collar. Here is the UML diagram of the class structure:
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Php Laravel Single table inheritance
As i came into OOP (Object-oriented-programming) i started to learn the concept of “Inheritance”. Inheritance itself is a cool stuff, but problems come when you need to save that object structure into a relational database: for example Mysql. This article is one of a series that will explain the best-practise approaches to solve that problem. Before going deeper into details i have to say that thoose concepts come from Martin fowler book: “Pattern of enterprise architecture” which i advise to anybody who wanna increase his skills in OOP Architectures. There are four ways to do that:
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