I have the following structure:
orders
id
name
products
id
name
items
id
order_id
product_id
quantity
The relationships are as follows:
Order
public function items(){
return $this->hasMany(Item::class)
}
public function products(){
return $this->hasManyThrough(Product::class, Item::class);
}
Item
public function order(){
return $this->belongsTo(Order::class);
}
public function product(){
return $this->belongsTo(Product::class);
}
Product
public function items(){
return $this->hasMany(Item::class);
}
I wish to get all products for the order doing something like this:
$order->items()->products()->get() using the hasManyThrough method, but I must be doing it wrong since it tries to look for item_id in the products table.
I realized that I do not need many through, I just need to use items table as a pivot table, defining the relationship on the Order model just like this:
public function products(){
return $this->belongsToMany(Product::class, 'items');
}
Related
I have a table called "categories" and there is a 3 table needed the id of categories
the 3 tables needed a categories id is "activies", "stories", "news" i really want to know how to fix this issue the stories and news table is running well im using php tinker to see if the relationship is running and the table activities it give me a null value, inside the activities table i`d input same category_id in the table of activities it gives always a null value given in php tinker
Models
Category.php
public function stories()
{
return $this->hasMany(Story::class);
}
public function news()
{
return $this->hasMany(Newy::class);
}
public function activites()
{
return $this->hasMany(Activity::class);
}
Activity.php
public function category()
{
return $this->belongsToMany(Category::class, 'category_id');
}
If you are using hasMany in your Category Model, the opposite relationship in your Activity model should be belongsTo() and not belongsToMany()
public function category()
{
return $this->belongsTo(Category::class);
}
You can read more in the documentation here
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);
I am new to this so bear with me.
I have 4 tables (users, scores, scorecards, courses) and I need to bring into a view info from all of these tables.
Here are the relationships:
Scores model
public function user(){
return $this->belongsTo('App\User');
}
public function scorecard(){
return $this->belongsTo('App\Scorecard');
}
public function course() {
return $this->belongsTo('App\Course');
}
Course model
public function club(){
return $this->belongsTo('App\Club');
}
public function scorecard(){
return $this->hasMany('App\Scorecard');
}
public function score() {
return $this->hasMany('App\Score');
}
Scorecard model
public function course(){
return $this->belongsTo('App\Course');
}
public function club(){
return $this->belongsTo('App\Club');
}
In my controller I get the scores id from a dropdown in the request. I need to essentially get the following info:
the scores record which is easy as i have the score id.
use the scorecard_id from the scores table to get the scorecard record from the scorecards table
grab the course info from the courses table using the course_id thats in the scorecards table.
You can eager load the relations using dot . as scorecard.course and it will load both scorecard and course.
$score = Score::with('scorecard.course')->find($id);
and then you can access corresponding attributes as:
$score->scorecard;
$score->scorecard->course;
if $id is the scores id from a dropdown,
$score=Score::with('scorecard','scorecard.course')->where(['id'=$id])->first();
then,
print_r($score);
gives the scores record.
print_r($score->scorecard);
gives the scorecard record.
print_r($score->scorecard->course);
gives the courses record.
I have 3 table on my database :
table 1 = user (hasMany order)
table 2 = order (hasMany order_detail, belongsTo user)
table 3 = order_detail (belongsTo order)
On my order_detail model i add this function :
public function order() {
return $this->belongsTo('App\Order');
}
so i can call the order data without define it from controller, i just define order_detail on my controller
$order_detail->order->invoice_number
but how to call the user data from the order detail?
I try use this
$order_detail->order->user
but it didn't work for me..
Is there any idea to call the grand parent relation?
In order model add function for order_detail:
public function order_details() {
return $this->hasMany('order_detail');
}
and for user:
public function user() {
return $this->belongsTo('user');
}
In user model add:
public function orders() {
return $this->hasMany('order');
}
Then, you can call in the controller:
$details = Order::find(1)->order_details->where('order_detail_id', 5)->first();
$userName = $details->username;
// ^
// column name in order_detail table
More info in the docs.
I think this is the more complete way to define the relationships:
// User model
public function orders(){
// I'm telling that users has many order. The orders have an user_id field that match with the ID field of the user.
return $this->hasMany('App/Order', 'user_id' , 'id');
}
// Order model
public function order_details(){
// I'm telling that order has many order_details. The order_details have an order_id field that match with the ID field of the order.
return $this->hasMany('App/OrderDetail', 'order_id' , 'id');
}
public function user(){
// I'm telling that an order belongs to an user. The user has an ID field that match with the order_id field of the order.
return $this->belongTo('App/User', 'id', 'user_id');
}
// OrderDetail Model
public function order(){
// I'm telling that an order detail belongs to an order. The order has an ID field that match with the order_id field of the order detail.
return $this->belongTo('App/Order', 'id', 'order_id');
}
I have seen that you put just the model name as first parameter in your relation definition. I think you must put the relative path from the root to the Model. In my case, I have the models as childs of the App folder.
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();