Contents
How to create database table in Magento 2?
I will create a table mageplaza_helloworld_post and take the following columns: Firstly, we will create database table for our CRUD models. To do this we need to insert the setup file: This file will execute only one time when install the module. Let put this content for this file to create above table:
How to define a resource model in Magento?
As above, we define the resource model Mageplaza\\Post\\Model\\ResourceModel\\Post The last thing about model is some variable which you should you in your model: As you know, the model file contain overall database logic, it do not execute sql queries. The resource model will do that.
What is a collection model in Magento 2?
The collection model is considered a resource model which allow us to filter and fetch a collection table data. The collection model will be placed in:
How to create a CRUD resource in Magento?
Every CRUD resource model in Magento must extends abstract class \\Magento\\Framework\\Model\\ResourceModel\\Db\\AbstractDb which contain the functions for fetching information from database. Like model class, this resource model class will have required method _construct ().
Can you get customer data from MySQL in Magento?
1) Magento is built to be configurable, so that you must not fetch data from MySQL, but you must use Magento Customer module (models, resource models) and Magento configuration data to retrieve customer data. Any straight query is not guaranteed to be compatible with different Magento versions and even installations of same version.
How to change database in Magento 2 CRUD?
If you want to change the database when upgrade module, please try to use UpgradeSchema.php and UpgradeData.php. Model is a huge path of MVC architecture. In Magento 2 CRUD, models have many different functions such as manage data, install or upgrade module.
How to use REST API in Magento 2?
Lets do this practically, you need to follow step by step REST API in Magento 2 Create the namespace Techone in the path app\\code. Create the module name TestApi in the path app\\code\\Techone. Now, Create the file named registration.php, with the path app\\code\\Techone\\TestApi.