first commit

app/Models/Author.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Foundation\Auth\User as Authenticatable;
+
+class Author extends Authenticatable {
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'name',
+    ];
+
+    public function books() {
+        return $this->belongsToMany(Book::class);
+    }
+}

app/Models/Book.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Foundation\Auth\User as Authenticatable;
+
+class Book extends Authenticatable {
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'name',
+    ];
+
+    public function author() {
+        return $this->hasMany(Author::class);
+    }
+
+    public function location() {
+        return $this->belongsTo(Location::class);
+    }
+}

app/Models/Location.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Foundation\Auth\User as Authenticatable;
+
+class Location extends Authenticatable {
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'name',
+    ];
+}