[英]Laravel 5 : database relation query using with
用戶->有很多問題問題->有很多答案
我想顯示一個用戶的問題信息,以及每個問題的最新答案
$questions = Question::select('id','user_id',
'title','video','status','created_at')
->where('user_id','=',$user->id)
->where('status','>=','2')
->with([
'user' => function($query){
$query->select('id','name','picture');
},
'answers' => function($query){
$query->select('id','question_id','user_id','answer','created_at',DB::raw('count(*) as answer_count'))
->orderBy('created_at','desc')->first();
},
])->get();
在這里我沒有得到每個問題的答案。 我得到了用戶提交的所有問題的答案
你能幫我嗎? 如何將問題ID放在哪里
User [id, name, and so on ] ->
question [
['id', 'title' ..]->Answer['id','question_id',etc ],
['id', 'title' ..]->Answer['id','question_id',etc ]
]
您首先需要獲取用戶的問題及其答案,而不是問題本身,以獲取預期的輸出:
$user = User::select('id','name','picture')->with([
'questions' => function($query){
$query->select('id','user_id','title','video','status','created_at');
$query->where('status','>=','2');
},
'questions.answers' => function($query){
$query->select('id','question_id','user_id','answer','created_at',DB::raw('count(*) as answer_count'));
$query->orderBy('created_at','desc')->first();
},
])->findOrFail($user_id);
現在,您應該能夠通過以下方式獲得給定用戶提出的所有問題以及對他們的最新答案:
foreach($user->questions as $question) {
$answer = $question->answers;
}
$questions = Question::select('id','user_id','title','video','status','created_at')->with([
'user' => function($query){
$query->select('id','name','picture');
}
])->where('status','>=','2')->get();
foreach($questions as $question)
{
$question_data[] = [
'id' => $question->id,
'title' => $question->title,
'video' => $question->video,
'user_id' => $question->user_id,
'status' => $question->status,
'created_at' => $question->created_at->toDateTimeString(),
'thumbnail' => $question->thumbnail,
'user' => [
'id' => $question->user->id,
'name' => $question->user->name,
'picture' => $question->user->picture
],
'answers' =>
$question->answers()->select('video','question_id','user_id','created_at','thumbnail')
->with([
'user' => function($query){
$query->select('id','name','picture');
}
])->orderBy('created_at','desc')->first()];
}
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