我目前正在尝试连接 5 个表来检索已订购商品的列表。是否可以将所有元素放在一起，而不是使用具有不同 ItemID 的多个“ordered_packs”集合？
我的代码
if(!\App\OrderedPack::where('orderID', '=', $orderID)->get()->isEmpty()) {
$packs = \App\OrderedPack::where('ordered_packs.orderID', '=', $orderID)
->join('packs', 'ordered_packs.packID', '=', 'packs.packID')
->join('pack_items', 'packs.packID', '=', 'pack_items.packID')
->join('items', 'pack_items.itemID', '=', 'items.itemID')->get();
我的返回结果
Collection {#288 ▼
#items: array:2 [▼
0 => OrderedPack {#289 ▼
#primaryKey: "ordered_packID"
#table: "ordered_packs"
#connection: null
#perPage: 15
+incrementing: true
+timestamps: true
#attributes: array:30 [▼
"ordered_packID" => 1
"orderID" => 80
"packID" => 7
"pack_quantity" => 12
"created_at" => "2016-02-11 14:20:29"
"updated_at" => "2016-03-08 16:21:02"
"pack_name" => "niceee"
"pack_description" => ""
"pack_itemID" => 5
"itemID" => 9
"item_code" => "INT T-C 12/15"
"companyID" => 1
"item_name" => "International Terms and Conditions"
"initial_level" => 5000
"current_level" => 4000
"item_typeID" => 6
"productID" => 1
"image_location" => "9.pdf"
"box_total" => 100
"offsite_level" => 1000
"locationID" => 1
"language" => "English"
"download_url" => ""
"archived" => 0
"low_stock_level" => 1000
"change_description" => ""
"old_itemID" => 0
"pdf_only" => 0
"total_stock" => 5000
"groupID" => 2
]
#original: array:30 [▶]
#relations: []
#hidden: []
#visible: []
#appends: []
#fillable: []
#guarded: array:1 [▶]
#dates: []
#dateFormat: null
#casts: []
#touches: []
#observables: []
#with: []
#morphClass: null
+exists: true
+wasRecentlyCreated: false
}
1 => OrderedPack {#290 ▼
#primaryKey: "ordered_packID"
#table: "ordered_packs"
#connection: null
#perPage: 15
+incrementing: true
+timestamps: true
#attributes: array:30 [▼
"ordered_packID" => 1
"orderID" => 80
"packID" => 7
"pack_quantity" => 12
"created_at" => "2016-02-11 14:18:35"
"updated_at" => "2016-03-08 16:21:02"
"pack_name" => "niceee"
"pack_description" => ""
"pack_itemID" => 6
"itemID" => 7
"item_code" => "GW CHO INT BRO 12/15"
"companyID" => 1
"item_name" => "GW Choice International Brochure (Including Details Guide) 12/15"
"initial_level" => 5000
"current_level" => 234
"item_typeID" => 1
"productID" => 2
"image_location" => "7.pdf"
"box_total" => 100
"offsite_level" => 2304
"locationID" => 1
"language" => "English"
"download_url" => ""
"archived" => 0
"low_stock_level" => 1000
"change_description" => ""
"old_itemID" => 0
"pdf_only" => 0
"total_stock" => 2538
"groupID" => 2
]
我对包中的每个项目都有一个orderedpack实例。我想要一个包含多个元素的订购包实例。
表格
订单->ordered_packs->包->pack_items->元素
最佳答案
在一个查询中不可能利用 Laravel，但您可以利用 eager loading :
$packs = \App\OrderedPack::where('ordered_packs.orderID', '=', $orderID)
->with('packs.pack_items.items')
->get();
假设您的关系设置正确
关于mysql - 连接多个表以获取库存项目的集合，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36035036/