Basically all the main programming languages currently have ORM frameworks (Object Relational Mapping), which help a lot the development of applications (under the object orientation paradigm – OOP) that persist in relational databases (like MySQL, Postgre, SQL Server, among others).
The function of an ORM framework is to abstract objects from a database (tables, columns, relationships, and so forth), map them, and make them readable within a project being developed in OOP.
The Composer (https://getcomposer.org/) is a dependency manager (packages) widely used in language PHP and provides many facilities, since it is responsible for checking, download to engage our project all the “libs” of third parties that we will need.
These “libs”, when downloaded by Composer, are grouped within a directory called “vendor”. In addition, a file called “autoload.php” is also created in this folder, responsible for “loading” all the classes we need to use. Basically, all I have to do is import “autoload.php” into a file of my project and I will have access to all classes of “libs” downloaded by Composer.
Hey guys!!!
In this video on the CodeIgniter 4 framework, I show you how to create validation rules for a “model”, thus enabling the data to go through a check before being inserted (insert) or updated (update).
Hey guys !!! To finalize the new product registration form (“product” table related to “category” table) started in the last video, in this I deal with the submission of the form inside the “controller” and call the “insert” method of the “ProductModel”.
To streamline the process, instead of taking the submitted data and “setting” them in the “model” variable, I pass the submitted data directly via “POST” as a parameter of the “insert” method (through the “method” “this->request->getPost() “).
Hey guys!!!
Continuing with the series on the CodeIgniter 4 framework, in today’s video I start the construction of the “Products” CRUD (which is a table that receives a list of the “Categories” table, using the foreign key “category_id”).
In this first part, I create the “ProductModel” and the controller “Products”. In addition, I also create the view “products_form” and in it I assemble the form for product registration.
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