Question

Yii beginner here. I am facing some problem with how to query the database with the scenario I have. Here is what my two tables look like. The reason category is maintained in a separate table is because a product can belong to multiple categories.

Product Table
-------------
id
product_name
product_desc
product_color
product_price


Category Table
--------------
id
product_category
product_id

A product can belong to multiple category.

Now, let’s say I want to find the products of category ‘xyz’ with color ‘blue’. I am not sure how do I query both the tables using two different models (or not) to achieve this. Any help?

Answer 1

Here you have many to many relationship where one product can belong to multiple categories and one category can belong to multiple products.

You will definitely need a third table

    Product Table
-------------
id
product_name
product_desc
product_color
product_price


Category Table
--------------
id
category_name


Product_Category Table
----------------------
product_category_id
product_id ( foreign key to Product->id )
category_id (foreign key to Category->id )