从 MySql、Laravel 中检索数据

Question

我有两张表，一张用于问题，一张用于选项。 所有问题都将保存在问题表中。

问题表：

id | questions                                       | created_on 
1  | Who is the world champianship on 2016 World cup?| 13-09-2016
2  | Who won the FiFA world cup?                     | 13-09-2019

选项表：

id | question_id | option_text
1  | 1           | Pakistan
2  | 1           | India
3  | 1           | Australia
4  | 1           | Srilanka
5  | 2           | Canada
6  | 2           | Russia
7  | 2           | Germany
8  | 2           | France

这是桌子：

我希望 json 响应格式如下：

[
{
    "question": "Who is the world champianship on 2016 World cup",
    "created_on": "2019-09-13",
    "question_id": 1,
    "options":[ 
    {"option_text": "Pakistan"},
    {"option_text": "India"},
    {"option_text": "Australia"},
    {"option_text": "Srilanka"}
    ]
},
{
    "question": "Who won the FiFA world cup?",
    "created_on": "2019-09-13",
    "question_id": 2,
    "options":[ 
    {"option_text": "Canada"},
    {"option_text": "Russia"},
    {"option_text": "Germany"},
    {"option_text": "France"}
    ]
}
]

但是在我下面的 SQL 查询中

    $records = DB::table('tbl_questions')
        ->where('created_on', '=', date('Y-m-d'))
        ->leftJoin('tbl_options', 'tbl_options.question_id', '=', 'tbl_questions.id')->get();

返回以下响应：

[
 {
     "question": "Who is the world champianship on 2016 World cup",
    "created_on": "2019-09-13",
    "question_id": 1,
     "option_text": "Pakistan"

 },
 {
   "question": "Who is the world champianship on 2016 World cup",
    "created_on": "2019-09-13",
    "question_id": 1,
    "option_text": "India"
 },
 {
 "question": "Who is the world champianship on 2016 World cup",
    "created_on": "2019-09-13",
    "question_id": 1,       
    "option_text": "Australia"
 },
 {
    "question": "Who is the world champianship on 2016 World cup",
    "created_on": "2019-09-13",
    "question_id": 1,
    "option_text": "Srilanka"
  },
  {
   "question": "Who won the FiFA world cup?",
    "created_on": "2019-09-13",
    "question_id": 2,
    "option_text": "Canada",
  },
  {
    "question": "Who won the FiFA world cup?",
    "created_on": "2019-09-13",
    "question_id": 2,
    "option_text": "Russia",
    },
    {
    "question": "Who won the FiFA world cup?",
    "created_on": "2019-09-13",
    "question_id": 2,
    "option_text": "Germany",
    },
    {
    "question": "Who won the FiFA world cup?",
    "created_on": "2019-09-13",
    "question_id": 2,
    "option_text": "France"
    }
 ]

任何人都可以帮助我获得预期的 json 响应。我们将不胜感激。

Answer 1

定义您的模型并将选项添加为关系。

Class Question extends Model
{
    public function Options()
    {
        return $this->hasMany(Option::class);
    }
}

在您的控制器中执行此操作。

public function questions()
{
    return Question::with('options')->where('created_on', '=', date('Y-m-d')->get();
}

Answer 2

请尝试改用 Eloquent 关系。 Refer Documentation Link Here

使用它我们可以定义模型之间的某些关系，其中有不同的类型。在您的情况下，它是一对多的关系，至于一个问题，有很多选择 首先，您需要在模型中定义关系和，如下所示 在控制器中，您将使用以下命令获得结果 -

$result = Questions::with('options')->get()

这将是您的问题模型：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Questions extends Model
{

    public function options()
    {
        return $this->hasMany('App\Model\Options');
    }
}

Answer 3

在 Question 模型中创建一个 hasMany 关系。像这样

public function options() { return $this->hasMany('App\Option'); }

并在查询中使用 with 函数来检索这样的选项

$records = DB::table('tbl_questions')
    ->where('created_on', '=', date('Y-m-d'))
    ->with('options')
    ->get();