In this post, we will go deeper into the usage of Module and Collection in Magento 2. After this post, you can insert some sample data on the custom database table and display them on frontend. Let’s start!

1. How To Use Model and
Collection in Magento 2
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2. OUTLINE
1. Insert some sample data on the custom
database table
2. Create Model, Resource Model and Collection
files
3. Get data from the database and display them
at the frontend

3. 1. Insert some sample data on the custom
database table
 Upgrade Tutorial_SimpleNews module installed in the last tutorial
to insert the sample data.

4. 1. Insert some sample data on the custom
database table
1.1. Create the upgrade data file
 Create file: app/code/Tutorial/SimpleNews/Setup/UpgradeData.php
 Purpose: check the module version and insert some sample data into
the custom table
=> Go to our blog post to see full source code

5. 1. Insert some sample data on the custom
database table
1.2. Modify the configuration file
 Open the configuration file at app/code/Tutorial/SimpleNews/etc/module.xml
 Modify setup_version="1.0.0" tosetup_version="1.0.1“

6. 1. Insert some sample data on the custom
database table
Open the Command
in Windows
Go to Magento root
folder
Run this command
line to install module
1.3. Upgrade the module

7. 1. Insert some sample data on the custom
database table
 Module to install: binmagento setup:upgrade
 The result in the tbl_tutorial_simplenews table:

8. 1. Insert some sample data on the custom
database table
If your module is not installed before:
 Create file: app/code/Tutorial/SimpleNews/Setup/InstallData.php
 Purpose: insert the sample data into the custom database table
when the module is installed
=> Go to our blog post to see full source code

9. 2. Create Model, Resource Model and
Collection files
 Purpose: insert, update, delete and get data in the database.
2.1. Create model file: app/code/Tutorial/SimpleNews/Model/News.php

10. 2. Create Model, Resource Model and
Collection files
2.2. Create resource model file:
app/code/Tutorial/SimpleNews/Model/Resource/News.php

11. 2. Create Model, Resource Model and
Collection files
2.3. Create collection file:
app/code/Tutorial/SimpleNews/Model/Resource/News/Collection.php

12. 3. Get data from the database and display
them at the frontend
3.1. Create route file:
app/code/Tutorial/SimpleNews/etc/frontend/routes.xml

13. 3. Get data from the database and
display them at the frontend
3.2. Create controller file:
app/code/Tutorial/SimpleNews/Controller/Index/Index.php
=> Go to our blog post to see full source code

14. 3. Get data from the database and display
them at the frontend
3.3. Clear the Magento cache then access with URL
http://localhost/magento2/news/

15. Following Mageworld Magento2 Tutorial Series…