如何用附加关系组织多对多关系：hasMany for拦截表

Question

I have table users and table channels.User can subscribe to channels and unsubscribe many times. The task: I need to store all subscription and unsubscription dates for each channel. What the best way to do this in Laravel 5?

I have an idea to store this dates as array like:

[['subscribe' => date, 'unsubscribe' => date], ...] 

in intersection table(users_channels) field, but is this a best solution?

And i have an idea to store this date to additional table, but how to create and update this table fields. The only thing that is convenient in this case - is to get all subscription and unsabscribtion dates for user in some channel with hasManyThrough () function

Answer 1

Laravel 5 has Observers, you can check documentation here. https://laravel.com/docs/5.4/eloquent#observers .

You can also use Events.
https://laravel.com/docs/5.4/eloquent#events

You can check the upcoming information and based on that add subscription trail in database.