Creating foreign key in phpmyadmin mysql

Question

Creating a comment system with a simple rating system for each comment.

tables : 1.For the comments and it is called comments and it has three columns : id , name , comment 2. for the IP of the user that did the rating and it is called voted_ip and it has three columns id , comment_id , user_ip

The purpose of the voted_ip table is that i need to save the IP address for each rate to validate it that it cannot rate again if it exists.

I created a foreign key from the child table voted_ip in the column comment_id connecting it to the parent table comments in the column id following the steps at this link and this video on how to create a working foreign key except that the child table still do not update after a comment or a rate is inserted.

as follow :

I thought about that there might be another step or I have to do something in the php side of the project. What am I missing?

Answer 1

插入“注释”时，数据不会插入另一个表“voted_ip”中，您必须明确地添加它，这些约束仅用于检查不是自动在其他表中添加数据。