datatable.directory/app/Models/DataTable.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

/**
 * A data table object (referencing changesets and rows)
 */
class DataTable extends Model
{
    /**
     * The attributes that should be mutated to dates.
     *
     * @var array
     */
    protected $dates = ['deleted_at'];

    /** Owning user */
    public function owner()
    {
        return $this->belongsTo(User::class, 'owner_id');
    }

    /** Fork precursor */
    public function parentTable()
    {
        return $this->belongsTo(DataTable::class, 'parent_table_id');
    }

    /** Fork descendants */
    public function forks()
    {
        return $this->hasMany(DataTable::class, 'parent_table_id');
    }

    /** Changesets */
    public function changesets()
    {
        return $this->hasMany(Changeset::class);
    }

    /** Data rows */
    public function dataRows()
    {
        return $this->hasMany(DataRow::class);
    }

    /** User-submitted comments */
    public function comments()
    {
        return $this->hasMany(TableComment::class);
    }

    /** Users favouriting this table */
    public function favouritingUsers()
    {
        return $this->belongsToMany(User::class, 'table_favourites');
    }

    /** Users to notify about comments */
    public function discussionFollowers()
    {
        return $this->belongsToMany(User::class, 'discussion_follows');
    }

    /** Reports of this table */
    public function reportsOf()
    {
        return $this->morphMany(ContentReport::class, 'object');
    }
}