I have a products table with brand_id, and a category_products table with, product_id and category_id.
My Products model :
class Product extends Model
{
public function categories() {
return $this->belongsToMany(Category::class)->withTimestamps();
}
}
My Brands Model :
class Brand extends Model
{
public function products() {
return $this->hasMany(Product::class)->with(['categories']);
}
}
My question is, How can I fetch the products from a Brand instance that belongs to certain category?
$brand = App\Brand::find(1);
/*
I want to be able to do something in the likes of :
*/
$brand->products_which_are_under_this_category
Remove with(['categories']) method from inside products() and write a query like that.
$brand->products()->with(['categories' => function ($query) {
$query->where('category_id', CATEGORY_ID);
}])->get();
hope this can help.
Related
I am trying to get product name from pivot table but unfortunately i have no idea how can i get product name from pivot table please help me thanks.
Product Model
public function category()
{
return $this->belongsToMany('App\ProductCategory', 'product_category', 'product_id', 'mf_product_category_id');
}
productcategory model
public function products()
{
return $this->belongsToMany('App\Product', 'product_category', 'mf_product_category_id', 'product_id');
}
controller
public function getproduct(Request $request)
{
// getting category Id
$categoryId = $request->category;
// getting product Id
$name = trim($request->product);
$productId = Product::where('name', $name)->pluck('id');
$getProductcategory = ProductCategoryCount::whereIn('mf_product_category_id', $categoryId)->whereIn('product_id', $productId)->get();
return $getProductcategory;
// return response()->json($getproduct);
}
As stated in laravel doc, you can retrieve pivot table extra data using withPivot on the relationship.
Define category in the Product Model
public function category()
{
return $this->belongsToMany('App\ProductCategory', 'product_category', 'product_id', 'mf_product_category_id')
->withPivot('Your_extra_data_on_pivot_table');
}
And by querying products, you can get category (which I suggest to be categories). You can retrieve it like this $products->first()->pivot->{name of_your_extra_data_on_pivot_table}
It is more optimized if you eager load this relationship.
I have followng database:
And database diagramm is on next picture. Simply speaking, Users have many shops, Shops have many products etc.
In need to select all products from all shops of particular user. In my Controller it's look like so:
But it's does't work (
Instade of this I try to write direct SQL
I just need to make following request by Eloqument methods
SELECT * FROM tmp.products
WHERE tmp.products.shop_id IN
(SELECT id FROM shops where user_id = 1);
with dynamics parametrs of course.
You could get all products by using whereHas filter like
$products = Product::whereHas('shop.user', function ($query) use($request) {
$query->where('id', '=', $request->user()->id);
})->get();
I assume you have defined proper mappings in your models like
class Product extends Model {
public function shop() {
return $this->belongsTo('Shop', 'shop_id');
}
}
class Shop extends Model {
public function user() {
return $this->belongsTo('User', 'user_id');
}
public function products() {
return $this->hasMany('Product', 'shop_id');
}
}
class User extends Model {
public function shops() {
return $this->hasMany('Shop', 'user_id');
}
}
I have a table called invoiceDetails that has item_id as foreign key from another table called items which has category_id as foreign key from table called categories.
I want to do that following using eloquent:
$result = InvoiceDetail::groupBy('item_id')
->selectRaw('sum(qty) as qty, item_id')->with('item', 'category')->get();
but I am getting error:
Call to undefined relationship [category] on model [App\InvoiceDetail].
Here's my relation inside Category model:
public function invoiceDetail() {
return $this->hasManyThrough('App\InvoiceDetail', 'App\Item', 'category_id', 'item_id');
}
Any suggestions?
Not sure you would even need a hasManyThrough relation here, unless you want to fetch all InvoiceDatail objects belonging to all items which in turn belong to the Category. That part is not clear from your question.
But in your example you are fetching items with their category from distinct item_id.
The reason this is not working is because you are trying to fetch the category relation from the InvoiceDetail object, which does not exist.
->with('item', 'category')
You want to load the Category based on the item relation, not based on the InvoiceDetail, try the dot notation (given that you did define the other relations)
->with('item.category')
Relations should be like this:
class InvoiceDetail extends Model
{
public function item()
{
return $this->belongsTo(\App\Item::class);
}
}
class Item extends Model
{
public function invoiceDetails()
{
return $this->hasMany(\App\InvoiceDetail::class);
}
public function category()
{
return $this->belongsTo(\App\Category::class);
}
}
class Category extends Model
{
public function items()
{
return $this->hasMany(\App\Item::class);
}
public function invoiceDetails()
{
return $this->hasManyThrough(\App\InvoiceDetail::class, \App\Item::class, 'category_id', 'item_id');
}
}
You would want to use the hasManyThrough if, for example, you have a Category and you want to load all the InvoiceDetails directly.
dd($category->invoiceDetails);
Laravel 4 Project, using Eloquent ORM.
I have three tables: customers, orders and products (+ 1 pivot table order_product). Customers are linked one-to-many to Orders. Orders are linked many-to-many to Products.
Customers 1-->N Orders N<-->N Products
I would like to have a method on Customer model that retrieves a list of products that customer is buying.
To better understand this, assume products are consumable.
For example Customer #1 can place:
Order #1 for Products A, B and C;
Order #2 for Products A, C and D;
Order #3 for Products C and E;
...and the result I want to retrieve is a Collection with Products A, B, C, D and E.
Models are (pseudo-coded on the fly):
class Product extends Eloquent {
public function orders()
{
return $this->belongsToMany('Order');
}
}
class Orders extends Eloquent {
public function customer()
{
return $this->belongsTo('Customer', 'customer_id');
}
public function products()
{
return $this->belongsToMany('Product');
}
}
class Customers extends Eloquent {
public function orders()
{
return $this->hasMany('Orders', 'customer_id');
}
public function products()
{
// What to put here ???
}
}
Thanks to #deczo's answer, I was able to put up a single query method to retrieve items:
public function items()
{
$query = DB::table('items')->select('items.*')
->join('item_order', 'item_order.component_id', '=', 'items.id')
->leftJoin('orders', 'item_order.order_id', '=', 'orders.id')
->leftJoin('customers', 'customers.id' , '=', 'orders.customer_id')
->where('customers.id', $this->id)
->distinct()
->orderBy('items.id');
$eloquent = new Illuminate\Database\Eloquent\Builder( $query );
$eloquent->setModel( new Item );
return $eloquent->get();
}
This is a Many-to-Many relationship, but with the Orders table as the pivot table.
class Customers extends Eloquent {
public function orders()
{
return $this->hasMany('Orders', 'customer_id');
}
public function products()
{
return $this->belongsToMany('Products', 'orders', 'customer_id', 'product_id');
}
}
I've included the last two parameters, but if you follow the singular_id pattern they can be left out.
It's possible to receive distinct Product models like this:
public function products()
{
return $this->belongsToMany('Products', 'orders', 'customer_id', 'product_id')
->distinct();
}
#deczo's answer probably works fine, and is probably a lot more performant as all the data reduction is done in the database itself, but here's a 'pure Laravel' way that's undoubtedly more readable:
use Illuminate\Database\Eloquent\Collection;
class Customer extends Eloquent
{
...
public function products()
{
$products = new Collection;
foreach ($this->orders as $order) {
$products = $products->merge($order->products);
}
return $products;
}
}
Note that this method will not act like normal relationship methods - to get the resulting collection you call the method (i.e. $products = $customer->products();) and you can't access it as a property like you can with relationships (i.e. you can't do $products = $customer->products;).
Also, I'm kinda going on my understanding of the Illuminate\Database\Eloquent\Collection#merge() method here that it automatically does a DISTINCT-like thing. If not, you'll have to do a $collection->unique() kinda thing.
I can't think of easy relation method for this one, but here's a workaround:
$productsIds = DB::table('customers')
->leftJoin('orders', 'orders.customer_id', '=', 'customers.id')
->join('order_item', 'order_item.order_id', '=', 'orders.id')
->leftJoin('items', 'order_item.item_id' , '=', 'items.id')
->distinct()
->get(['items.id']);
$productsIds = array_fetch($productsIds, 'id');
$productsCollection = Product::whereIn('id', $productsIds);
Is there any way I can do this with eloquent?
$orders = Customer::with('orders','orders.shop')->where('orders.shop.location','=','Japan')->get()
Customers, orders and shop are tables where 1 customer has many orders and each order has one shop only.
Location is a column in the shop table
I keep getting an error stating orders.shop.location is a column not found.
Anyone can help? Thanks in advance.
You need to defined relationship in your model classes.
Customer model:
public function orders()
{
return $this->hasMany('Order');
}
Order model:
public function customer()
{
return $this->belongsTo('Customer');
}
Then if you want orders of a special customer you just have to do :
$orders = Customer::find($id)->orders;
Or find the user attatched to an order:
$user = Order::find($id)->user;
You can also use the same kind of relation between your Shop and Order model and do something like this:
$orders = Order::with(array('shop' => function($query)
{
$query->where('location', '=', 'japan');
}))->get();
Which should give you all orders for a shop located in japan.
More informations about this type of request:
http://laravel.com/docs/eloquent#eager-loading
in CostumerModel you need set a relationship (One To Many):
public function order()
{
return $this->hasMany('OrderModel', 'foreign_key_in_orderTable');
}
in OrderModel too:
public function costumer()
{
return $this->belongsTo('CostumerModel', 'foreign_key_in_orderTable');
}
then in OrderModel one more relationship with Shop (One To One):
public function shop()
{
return $this->hasOne('ShopModel', 'foreign_key');
}
Now in ShopModel (One To One):
public function order()
{
return $this->belongsTo('OrderModel', 'local_key');
}
query:
$orders = Customer::with('costumer', 'shop')->where('location','=','Japan')->get();