Question

我有4个表用户，区域，租赁和位置

每个用户都有多个租借
每个地区都有多个租赁
每个位置都有多个租借
基本上租赁属于所有3个表

地区 - 身份证，姓名位置 - id，street_address，city，province，postal_code Rental - id，region_id，location_id，user_id

我已经在这些表之间建立了hasMany和belongsTo关系，并在Tinker中对它们进行了测试，但现在我想创建和更新租借。

region_id通过请求传递 - $ regionId
user_id是Auth :: id（） - $ userId
通过仅获取部分请求并检查位置表来找到location_id，如果存在，我抓住location_id - $ locationId
仅使用（）再次使用该数据抓取剩余的帖子数据 - $ rentalData

所有这些都适用于此，但是如何使用我提取的ID和数据创建和更新租借，这几乎可以工作：

Location::find($locationId)->rentals()->create($rentalData);

但是，需要以某种方式将$ locationId和$ userId放入混合中，并且使它们可填充似乎不正确。

到目前为止，我一直在玩这个：

// Retrieve the chosen rental region
$regionId = Region::find($request->input('region_id'));

// Retrieve authenticated user id
$userId = Auth::id();

// Retrieve rental location data
$rentalLocationData = $request->only('street_address', 'city', 'province', 'country', 'postal_code');

// Does the location already exist? If not create and persist it to the database
$locationData = RentalLocation::firstOrCreate($rentalLocationData);
$locationId = $locationData->id;

// Create the rental...?
$rental = Location::find($locationId)->rentals()->create($rentalData);

更新

所以我可以继续使用ORM去做并做到这一点，但我仍然想了解Eloquent如何超越我学习观看Laracast视频的基础知识，所以任何帮助都会受到赞赏，现在我发现它真的让人困惑：

// Retrieve rental location data from the request
$requestData = $request->only('street_address', 'city', 'province', 'country', 'postal_code');

// Does the location already exist? If not create and persist it to the database
$rentalLocation = RentalLocation::firstOrCreate($requestData);


// Retrieve the foreign key ids not included in request
$foreignKeyIds = [ 'user_id' => Auth::id(), 'rental_location_id' => $rentalLocation->id ];

// Retrieve request data for creating a rental, and merge with foreign key ids
$requestData = $request->only('region_id', 'stall', 'level', 'description');
$rentalData = array_merge($foreignKeyIds, $requestData);

// Insert new rental with all field attributes included
DB::table('rentals')->insert($rentalData);

更新

这个解决方案怎么样？

RentalRequest检查region_id是否存在，用户将始终是Auth :: user（）。

public function store(RentalRequest $request)
{
    // Retrieve the authenticated user
    $User = Auth::user();

    // Retrieve rental location data from request
    $requestData = $request->only('street_address', 'city', 'province', 'country', 'postal_code');

    // Does the location already exist? If not create and persist it to the database
    $RentalLocation = RentalLocation::firstOrCreate($requestData);

    // Retrieve the region for inserting the rental
    $Region = Region::find($request->input('region_id'));

    // Retrieve rental data from request
    $requestData = $request->only('stall', 'level', 'description');

    // Create a new rental, fill with request data, and add relationships
    $rental = new Rental;
    $rental->fill($requestData);
    $rental->owner()->associate($User);
    $rental->location()->associate($RentalLocation);

    // Persist rental to database
    $rental = $Region->rentals()->save($rental);

    // Return rental data for capture by AngularJS interceptor
    // TODO: filter rental data don't need it all returned to client
    return response()->json([
        'rental' => $rental,
        'action' => 'rental_registered',
        'message' => trans('rental.registered')
    ]);
}

Answer 1

我不明白为什么要这么复杂？

试试这个：

解决方案1 

$User = User::find(Auth::id()); 
if(!$User) {
    return 'no user';
}

$Region = Region::find($request->input('region_id'));
if(!$Region) {
    return 'no region';
}

$locationData = $request->only('street_address', 'city', 'province', 'country', 'postal_code');
$Location = Location::firstOrCreate($locationData);

$rentalData = [
    'user_id' => $User->id, 
    'region_id' => $Region->id, 
    'location_id' => $Location->id
];
$Rental = Rental::firstOrCreate($rentalData);

解决方案2

// ->remember() for caching request to prevent many queries, for faster result use apc cache in config files, no need to use memcache when You're using 1 app server

if(!User::where('id', '=', Auth::id())->remember(1440)->exists()) {
    return 'no user';
}

if(!Region::where('id', '=', $request->input('region_id'))->remember(1440)->exists()) {
    return 'no user';
}

$locationData = $request->only('street_address', 'city', 'province', 'country', 'postal_code');
$Location = Location::firstOrCreate($locationData);

$rentalData = [
    'user_id' => $User->id, 
    'region_id' => $Region->id, 
    'location_id' => $Location->id
];
$Rental = Rental::firstOrCreate($rentalData);

Laravel 5创建一个属于3个其他表的新记录

1 个答案: