如何在laravel中连接'users'table和'post'table？

Question

这是我的结构，我想在laravel中连接这两个表，怎么办？

Post Table:

public function up()
{
    Schema::create('post', function (Blueprint $table) {
        $table->increments('post_id');
        $table->string('post');
        $table->integer('time');
        $table->string('host');
        $table->integer('vote_up');
        $table->integer('vote_down');
        $table->foreign('id_fk')->references('id')->on('users');
        $table->timestamps();
    });
}

用户Table：

public function up()
{
    Schema::create('users', function (Blueprint $table) {
        $table->increments('id');
        $table->string('name');
        $table->date('dob');
        $table->string('email')->unique();
        $table->string('password');
        $table->rememberToken();
        $table->timestamps();
    });
}

Answer 1

在你的帖子中 table 你应该有：

$table->integer('user_id')->unsigned();

在您的用户模型上：

public function posts(){
return $this->hasMany(Post::class);
}

在您的 Post 型号上：

public function user(){
return $this->belongsTo(User::class);
}

Answer 2

我假设您只是在迁移中粘贴，但您确实需要在您的 posts [=] 之前创建 users table 33=]。我会改变

$table->foreign('id_fk')->references('id')->on('users');

到

$table->foreign('user_id')->references('id')->on('users');

因为Laravel可以推断出外键：

Eloquent determines the default foreign key name by examining the name of the relationship method and suffixing the method name with _id. However, if the foreign key on the Post model is not user_id, you may pass a custom key name as the second argument to the belongsTo method

然后您在模型中所需的全部内容如下：

class Post extends Model
{
    /**
     * Get the user that owns the post.
     */
    public function user()
    {
        return $this->belongsTo('App\User');
        // if you want to keep your current structure:
        // return $this->belongsTo('App\User', 'id_fk', 'id);
    }
}

和

class User extends Model
{
    /**
     * Get the post for a user.
     */
    public function posts()
    {
        return $this->hasMany('App\Post');
        // if you want to keep your current structure:
        // return $this->belongsTo('App\Post', 'id_fk');
    }
}

您可以阅读有关建立关系的更多信息here。

如何在laravel中连接'users'table和'post'table？

How to connect 'users' table with 'post' table in laravel?

database

laravel

database-connection

laravel-facade