質問編集履歴
5
追記
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しかし、なぜか`first()`とすることで取得できた。
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取得結果
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![イメージ説明](f2242983d7285f8890161cbde51d903b.png)
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4
修正した部分を追記
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public function books(){
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-
return $this->belongsToMany("App\Book");
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return $this->belongsToMany("App\Book")->withTimestamps();
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}
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@@ -257,3 +257,21 @@
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}
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```
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### 追記
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`DB::table~latest();`だと単一のプロパティではないのか以下の様なエラーとなる。
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> Property [books] does not exist on the Eloquent builder instance.
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しかし、なぜか`first()`とすることで取得できた。
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3
追記
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### 抽出したいカラムに関して
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借りた時間というのは実際には借りた際にpostでレコードが挿入されますので、
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create_bookテーブル(create_book_user_table.php)にある`timestamps`で`created_at`を表しています。
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### 該当のソースコード
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2
修正
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-
create_user_table.php
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create_book_user_table.php
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```PHP
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$table->id();
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$table->string('name');
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$table->string('email')->unique();
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$table->timestamp('email_verified_at')->nullable();
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$table->s
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$table->unsignedBigInteger('user_id');
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$table->
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$table->unsignedBigInteger('book_id');
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$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
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$table->foreign('book_id')->references('id')->on('books')->onDelete('cascade');
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$table->timestamps();
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public funci
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public function users(){
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return $this->belongsToMany("App\User");
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1
追記
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PHP 7.X
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MySQL
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create_users_table.php
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```PHP
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$table->id();
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$table->string('name');
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$table->string('email')->unique();
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$table->timestamp('email_verified_at')->nullable();
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$table->string('password');
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$table->rememberToken();
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$table->timestamps();
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```
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create_user_table.php
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```PHP
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$table->id();
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$table->string('name');
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$table->string('email')->unique();
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$table->timestamp('email_verified_at')->nullable();
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$table->string('password');
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$table->rememberToken();
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$table->timestamps();
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```
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create_book_table.php
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```
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$table->id();
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$table->char('book_name');
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$table->bigInteger('book_price');
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$table->text('book_detail');
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$table->timestamps();
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```
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App\User.php
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```PHP
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<?php
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namespace App;
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use Illuminate\Contracts\Auth\MustVerifyEmail;
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use Illuminate\Foundation\Auth\User as Authenticatable;
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use Illuminate\Notifications\Notifiable;
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class User extends Authenticatable
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{
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use Notifiable;
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/**
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* The attributes that are mass assignable.
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*
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* @var array
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*/
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protected $fillable = [
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'name', 'email', 'password',
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];
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/**
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* The attributes that should be hidden for arrays.
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*
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* @var array
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*/
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protected $hidden = [
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'password', 'remember_token',
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];
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/**
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* The attributes that should be cast to native types.
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*
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* @var array
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*/
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protected $casts = [
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'email_verified_at' => 'datetime',
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|
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];
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public function books(){
|
196
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|
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return $this->belongsToMany("App\Book");
|
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|
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}
|
200
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201
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|
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|
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}
|
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|
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```
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App\Book.php
|
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```PHP
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<?php
|
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namespace App;
|
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use Illuminate\Database\Eloquent\Model;
|
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+
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|
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|
+
class Book extends Model
|
228
|
+
|
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{
|
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+
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|
+
protected $table = "books";
|
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+
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+
|
234
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+
|
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+
protected $fillable = [
|
236
|
+
|
237
|
+
'book_name', 'book_price', 'book_detail',
|
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+
|
239
|
+
];
|
240
|
+
|
241
|
+
|
242
|
+
|
243
|
+
public funciton users(){
|
244
|
+
|
245
|
+
return $this->belongsToMany("App\User");
|
246
|
+
|
247
|
+
}
|
248
|
+
|
249
|
+
}
|
250
|
+
|
251
|
+
```
|