Dynamic Dependent Dropdown in CodeIgniter 4 using Ajax

Dynamic Dependent Dropdown in CodeIgniter 4 using Ajax

In this article, we are going on how to create a dynamic dependent dropdown in CodeIgniter 4 using jQuery and Ajax(Dynamic Dependent Dropdown in CodeIgniter 4 using jQuery and Ajax). so here we will give information about the ajax country state city dropdown.

The dynamic dependent dropdown is commonly used in country-state-city and category-subcategory selection. Loading dynamic data into selection boxes without refreshing the page makes the web application easy to use.

Overview

Step 1: Install Codeigniter 4

Step 2: Setting Database Configuration

Step 3: Create Table in Database

Step 4: Create Controllers

Step 5: Create View Files

Step 6: Run Our Application

Install Codeigniter 4

If you want to download or install CodeIgniter 4 then you can below Url.
How To Install Codeigniter 4 Using Manual, Composer, Git

Setting Database Configuration

After complete installation of CodeIgniter 4. we have to database configuration. now we will open the .env file and change the database name, username, password in the .env file. See below changes in a .env file.

Create Table in Database

Now, We need to create a new table in the database.  so here we will create and insert some data into the database. so you can see below the MySQL script.

Create Controllers

we need to create the dropdown controllers. so you can see the below example.

app/Controllers/Dropdown.php

Create view Files

here in this step, we need to create a new dropdown.php file into the views directory. for that, you can see the below example.

app/views/dropdown.php

Run Our Application

We can start the server and run the codeigniter 4 application using the below command.

Now we will run our example using the below Url in the browser.

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