I want some help of forming queries on Laravel Eloquent
I have 4 models in my application
Item Model
class Item extends Model
{
use HasFactory;
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = [
'code', 'name', 'type', 'price', 'cost', 'reorder_level', 'status'
];
public function grnoteitems()
{
return $this->hasMany(Grnoteitem::class);
}
}
Grnote Model
class Grnote extends Model
{
use HasFactory;
protected $fillable = [
'date', 'number', 'warehouse_id','user_id', 'authorized_id', 'approved_id', 'notes'
];
public function grnoteitems()
{
return $this->hasMany(Grnoteitem::class);
}
public function warehouse()
{
return $this->belongsTo(Warehouse::class);
}
}
Grnoteitem Model
class Grnoteitem extends Model
{
use HasFactory;
protected $fillable = [
'grnote_id', 'item_id', 'description', 'packing', 'quantity', 'price', 'total'
];
public function grnote()
{
return $this->belongsTo(Grnote::class);
}
public function item()
{
return $this->belongsTo(Item::class);
}
}
Warehouse Model
class Warehouse extends Model
{
use HasFactory;
protected $fillable = ['name', 'address'];
public function grnotes()
{
return $this->hasMany(Grnote::class);
}
}
Quantity of the item is calculated by multiplying quantity and packing columns in the grnotes table.
Now I want to retrieve all the items with their quantity(quantity * packing) from a particular warehouse.
I tired the below query
$items = Item::withSum('grnoteitems', 'quantity', function($query) use($warehouse, $from, $to){
$query->with('grnote', function($query1) use($warehouse, $from, $to){
$query1->where('warehouse_id', $warehouse->id)
->whereBetween('date', [$from, $to])->get();
})->get();
})->get();
This is working fine. But I don't find any way to get sum of two multiplied columns
I want something like
$items = Item::withSum('grnoteitems', '(quantity * packing)', function($query) use($warehouse, $from, $to){
$query->with('grnote', function($query1) use($warehouse, $from, $to){
$query1->where('warehouse_id', $warehouse->id)
->whereBetween('date', [$from, $to])->get();
})->get();
})->get();
Please help me to solve this.
It's a bit long to write all the code to do this, but my idea would to :
start your query from the wareHouse you want items from
so Warehouse::first() [with grnote [with item]] and custom where stuff
then the data you need to calculate are on the pivot table between Item and Grnote, so I would add withPivot to both relations
in this query order, the pivot value will be appended as a relation to the Item object
I would add a new attribute to the item model. Checking if the pivot attribute is set (so it comes from a query with pivot), calculate the quantity, and append it to the Item instance
You can also loop on the resulting Collection to append your new attribute.
Related
I'm tryng to create nested eager loading with a where constraint on a recursive relationship
Models and query simulation:
Model Hierarchy
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Hierarchy extends Model
{
protected $table = 'hierarchy';
protected $primaryKey = 'id_hierarchy';
protected $fillable = [
'name',
'parent_id'
];
/**
* #return HasMany
*
* This method implement recursive relationship
*/
public function children()
{
return $this->hasMany(Hierarchy::class, 'parent_id')->with('children');
}
/**
* #return HasMany
*/
public function grandchildren()
{
return $this->hasMany(Grandchild::class, 'id_hierarchy');
}
}
Model Grandchild
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Grandchild extends Model
{
protected $table = 'grandchildren';
protected $primaryKey = 'id';
protected $fillable = [
'id_hierarchy',
'id_something'
'name'
];
/**
* #return BelongsTo
*/
public function hierarchy()
{
return $this->belongsTo(Hierarchy::class, 'id_hierarchy');
}
}
The following query does not return the grandchildren as it was supposed to;
public function read($id)
{
$data = Hierarchy::query()
->whereNull('parent_id')
->with(['children.grandchildren' => function ($query) use($id) {
$query->where('id_something', $id);
}])
->get();
}
The problem is in the constrain, because with the following query it returns the grandchildrren (although not filtered because it doesn't have the where condition)
$data = Hierarchy::query()
->whereNull('parent_id')
->with(['children.grandchildren'])
->get();
Thanks in advance for suggestions to resolve this issue.
Edited:
As the code is a simulation of the real case, I added 'id_something' to be clearer what is involved.
'id_something' is related to another model that is not represented here
Assuming that HomeCity is one of the related models for GrandChild and the relationship is defined as
//GrandChild.php
public function home_city()
{
return $this->hasMany(HomeCity::class);
}
Then the query to return GrandChild records who live in HomeCity (id_something is a column on home_city table) identified by $id may written as:
public function read($id)
{
$data = Hierarchy::query()
->whereNull('parent_id')
->with(['children' => function ($query) use($id) {
$query->with(['grandchildren' => function($query) use($id) {
$query->whereHas('home_city', fn($query) => $query->where('id_something', $id);
}]);
}])
->get();
}
Property Model:
class Property extends Model {
use HasFactory;
protected $table = 'properties';
protected $fillable = ['name', 'address', 'city', 'poskod', 'state', 'facilities'];
/* Get all the units in this property */
public function units()
{
return $this->hasMany(Unit::class);
}
}
Unit Model
class Unit extends Model {
use HasFactory;
protected $fillable = [
'user_id',
'property_id',
'type',
'no',
'owner',
'commission',
'agent',
'availability',
'bed',
'bath',
'sqft',
'rental',
'sale',
];
/* Get the property the unit is in */
public function property() {
return $this->belongsTo(Property::class);
}
}
I need to get all the units which are in a certain city. And city is defined inside a property which is a foreign key to units.
I did it by memory, so it is not tested.
$units = Unit::with('property')
->whereHas('property' function ($query) {
$query->where('city', 'Amsterdam');
});
Very good explanation of eager loading and whereHas here: Laravel - Eloquent "Has", "With", "WhereHas" - What do they mean?
I have a relationship between Invoice and Shift.
Invoice model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Invoice extends Model
{
public $primaryKey = 'id';
protected $fillable = [
'user_id',
'date_ins',
'closeco',
'closedrh',
'lvl',
'new',
];
public function user()
{
return $this->hasOne(User::class,'id','user_id');
}
/**
* The roles that belong to the invoice.
*/
public function shifts()
{
return $this->belongsToMany(Shift::class, 'invoice_shift')
->withPivot([
'invoice_id', 'shift_id', 'shift_taken_id', 'shift_swapped_date', 'shift_taken_date', 'tas',
'status_tas', 'status_co', 'status_drh', 'back_co',
'msg', 'msg_co', 'msg_drh'
])
->orderBy('status_drh', 'ASC')
->orderBy('status_co', 'ASC');
}
}
Shift model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Shift extends Model
{
public $primaryKey = 'id';
protected $fillable = [
'code',
'description',
];
/**
* The users that belong to the role.
*/
public function invoices()
{
return $this->belongsToMany(Invoice::class, 'invoice_shift')
->orderBy('status_drh', 'ASC')
->orderBy('status_co', 'ASC');
}
}
So I have a pivot table called Invoice_shift.
I cannot extract, starting from invoices table, just invoices that have tas (in invoice_shift table) = current logged user.
I cannot filter as a static value in Invoice model definition with wherepivot because it is dynamic value, every time logged user id is different.
I tried to do this in controller
$invoices = Invoice::with('shifts.invoices')
->orderBy('date_ins', 'DESC')->get();
$filter = $invoices->shifts()
->wherePivot('tas', '=', $user_id)
->get();
but I get an error because I think invoices are a collection ... I tried to insert a foreach...but it doesn't work.
The error message:
Method Illuminate\Database\Eloquent\Collection::shifts does not exist
How can I do this?
Thanks
$invoices is an instance of Illuminate\Database\Eloquent\Collection and therefore relationship shifts() cannot be used..
Maybe you need the correct Eloquent builder to filter invoices using whereHas("relationship", fn)
$filteredInvoices = Invoice::with('shifts.invoices')
->whereHas("shifts", function($query) use ($user_id) {
$query->wherePivot('tas', $user_id)
})
->orderBy('date_ins', 'DESC')
->get();
I have the following model for Users:
class User extends Authenticatable
{
use Notifiable;
protected $table = 'login_info';
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = [
'name', 'email', 'password',
];
/**
* The attributes that should be hidden for arrays.
*
* #var array
*/
protected $hidden = [
'password', 'remember_token',
];
public function getDashboards()
{
return \DB::table('dashboard')
->select('type')
->where('id', Auth::id())
->orderBy('column', 'asc')
->get();
}
}
Users have different information in many tables
user info like name, office, dashboard,2FA etc
Is the way I do it now "best practice" (like the getDashboards function) for getting information from different tables?
Or should I create a model for each of the tables and then "join them" (hasMany, belongsToMany, and so on) for each of the tables?
EDIT:
I am now using models, but the result of the query is always an empty array.
class Dashboard extends Model
{
protected $table = 'dashboard';
public function user()
{
return $this->belongsTo(User::class,'user_id','id');
//user_id
}
}
user_id is the id of the user which is used in the login_info table.
And in the User class I have:
public function dashboards()
{
return $this->hasMany(Dashboard::class,'id','user_id');
}
In the login controller I have:
$user = \App\User::find(1);
$user->dashboards;
Anyone see what the problem could be?
Thanks for any help!
public function dashboards()
{return $this->hasMany(\App\Dashboard::class);
}
And in your Dashboard Model you do it this way
protected $casts = [
'user_id' => 'int',
];
public function user()
{
return $this->belongsTo(\App\User::class);
}
The more Laravel way is to rather created the related Dashboard model and use the eloquent relationships, and harness the features of the ORM. Nothing wrong to include an orderBy on the relationship if you always need ordering on that column.
class User extends Authenticatable
{
public function dashboards()
{
return $this->hasMany(Dashboard::class)
->orderBy('column', 'asc');
}
}
class Dashboard extends Model
{
public function user()
{
return $this->belongsTo(User::class);
}
}
You do not have to do anything in the model! Just refer to the model in the controller, for example:
User::where('id', Auth::id())->pluck('type');
I am trying to make games website, so i have one-to-many relation: one category has many games.
in my db, I have games' table and cats' table.
in the games' table I have a column named as 'cat_game_id' which reffers to the category's id, that the game belongs to.
my 'game' model looks like this
`
class Game extends Model {
protected $fillable = array(
'name',
'slug',
'description',
'instruction',
'url',
'cat_game_id',
'created_at',
'updated_at'
);
/*
* A game belongs to a category
*/
public function cat() {
return $this->belongsTo('App\catGame');
}
}
`
and i have another model called 'catGame':
`class catGame extends \Eloquent {
public $timestamps = false;
protected $fillable = array(
'name',
'location',
'slug'
);
/*
* A category has many games
*/
public function games() {
return $this->hasMany('App\Game');
}
}
`
In my index page I want to show the game's name, and next to it the category's name. so I did:
$view->game = Game::where('slug', '=', $slug)->firstOrFail();
$view->cat_name = $view->game->cat->name;
but I get this error:
Trying to get property of non-object
any ideas please?