I've been trying to do this for a while now. Most of the time, I solve it by using accessors. I'm currently trying to get if the column exists and I created a function in my model which is suppose to return boolean.
Model code:
class Inventory extends Model
{
protected $attributes = ['inventory'];
protected $appends = ['colorThumb'];
public function hasAttribute($attr){
return array_key_exists($attr, $this->attributes);
}
}
Controller code:
public function allInvOperation(Request $request){
$inv = Inventory::where('is_deleted', 0)->with(['product', 'size','color'])->orderByDesc('id')->get();
if(!is_null($request->searchText)){
dd($inv->hasAttribute('inventory'));
$inv = Inventory::where('is_deleted', 0)->with(['product', 'size','color'])->orderByDesc('id');
if($request->inv_filter == 'inventory'){
$inv = $inv->where('inventory', 'like', "%".$request->searchText."%")->get();
}
if($request->inv_filter == 'code'){
$inv = $inv->whereHas('product', function ($q) use ($request){
$q->where('code', "%".$request->searchText."%");
})->get();
}
}
ERROR
Method Illuminate\Database\Eloquent\Collection::hasAttribute does not exist.
The code you are doing hasAttribute on is a Collection of objects, you need to use first on that query to get a single result on which you can later do hasAttribute
Related
in my controller parameter passed to posts function in user model with construct method .
class MyController extends Controller
{
private $user;
public function __construct(User $getuser)
{
$this->user = $getuser;
}
public function index($id = 2)
{
$posts = $this->user->posts($id);
$user = User::FindOrFail($id);
return $user->posts;
}
}
in my user model parameter accessed and passed to relationship .
class User extends Authenticatable
{
use Notifiable;
protected $fillable = [
'name', 'email', 'password',
];
function posts($id)
{
return $this->hasMany('App\Post')->where('id',$id);
}
}
it works when use like this
"return $this->hasMany('App\Post')->where('id',1);"
but not working with passed parameter. getting this error
"Symfony\Component\Debug\Exception\FatalThrowableError Too few
arguments to function App\User::posts(), 0 passed in
C:\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Concerns\HasAttributes.php
on line 415 and exactly 1 expected"
Check your controller method you should be returning. ie: return $posts instead of return $user->posts as this is seeking to find posts without passing in the id as you do with $posts = $this->user->posts($id);
That's why you are getting a symphony error of too few arguments as you pass no arguments in return $user->posts
User Model
function posts($id)
{
return $this->hasMany('App\Post');
}
You could access the post with the given condition by using where on the relation method.
Querying relations
https://laravel.com/docs/7.x/eloquent-relationships#querying-relations
$post = $user->posts()->where('id', $id)->first();
You could use get() or first() according to your requirement.
$posts = $user->posts()->where('id', $id)->get();
If you want a user who has a post that satisfies the criteria.
$user = User::whereHas('posts', function($query) use($id){
$query->where('id', $id);
// You may add several other conditions as well.
})
->with(['posts' => function($query) use($id){
$query->where('id', $id);
}
])
->first();
Now,
$user->posts
will give a collection of only ONE post Model Instance that satisfied the condition
Problem: I have accessor in Size.php model which is called in relationship with Item.php Model, in API i need the accessor to work, but in other controllers i want to disable the accessor. I have removed unnecessary/unrelated code from all files.
What i want to do:
In ItemControllerAPI i need accessor to work, but i want to disable accessor in other controllers.
I have already seen:
I have already seen these links but didn't work for me.
1: https://laracasts.com/discuss/channels/eloquent/accessor-on-demand-but-not-on-every-results
2: Create dynamic Laravel accessor
3: https://laracasts.com/discuss/channels/general-discussion/eager-load-accessors
Size.php (Model)
class Size extends Model
{
protected $appends = ['addons'];
public function items()
{
return $this->belongsToMany('App\Item', 'items_sizes')->withPivot('price');//->withTimestamps();
}
public function getAddonsAttribute($value)
{
$addon = Addon::where('addons.category_id', $this->category_id)
->where('size_id', $this->id)
->get();
return $addon;
}
}
Item.php (Model)
class Item extends Model
{
public function options()
{
return $this->belongsToMany('App\Option', 'items_options')->withTimestamps();
}
public function sizes()
{
return $this->belongsToMany('App\Size', 'items_sizes')->withPivot('price');//->withTimestamps();
}
}
ItemControllerAPI.php (Controller)
class ItemControllerAPI extends BaseControllerAPI
{
public function show($id)
{
// If i call the Size model directly by using setAppends([]) its working fine,
// its removing the appended array from Size model
// $size = Size::all();
// $size->each->setAppends([]);
// return $size;
// If i use it with relationship it won't work.
// $itemSingleQuery = Item::with(['sizes' => function($query)
// {
// Doesn't work
// $query->setAppends([]);
// Doesn't work
// $query->each->setAppends([]);
// }])
// ->with('options')
// ->where('id', $id)
// ->get();
// query for getting data with relationships
$itemSingleQuery = Item::with('sizes')
->with('options')
->where('id', $id)
->get();
return $this->respondSuccess('content found', $itemSingleQuery);
}
}
I've found out how to do this:
After getting the entire collection we need to call setAppends() in each model, which contains appends, to add or remove them before serialization to array or JSON.
$itemSingleQuery = Item::with('sizes')->get();
$itemSingleQuery->each(function ($item) {
$item->sizes->each->setAppends(['addons']);
});
I would suggest that you set $appends when you need it:
$itemSingleQuery->pluck('sizes')->collapse()->each->setAppends(['addons']);
How to search by title in the ServiceType only? There is also a title field in the Package which should be avoided
For example, in the Model:
class Package extends Eloquent {
protected $table = 'package';
function serviceType()
{
return $this->belongsTo('ServiceType');
}
public static function getPackagesByServiceType($service)
{
return Package::with('serviceType')->where('title', '=', $service);
}
}
Note:
There is a service_type_id field in the Package and id, title fields in the serviceType
in the controller:
$packages = Package::getPackagesByServiceType('something')->get();
No result appeared for some reason? It should search for something in the serviceType
It seem it wouldn't work to combine with() and where(). When I remove the where() and it work.
You can't use where() like that to filter by a related model. You should use whereHas() instead:
public static function getPackagesByServiceType($service)
{
return Package::with('serviceType')->whereHas('serviceType', function($q) use ($service){
$q->where('title', '=', $service);
});
}
Note if you don't need serviceType in the packages afterwards you don't have to eager load it, ergo you can remove the with('serviceType')
Also if you call get() in the controller you should use a query scope. It offers the same functionality but it's not a static function and it's the Laravel way
public function scopeByServiceType($query, $service){
return $query->with('serviceType')->whereHas('serviceType', function($q) use ($service){
$q->where('title', '=', $service);
});
}
And you use it like this:
$packages = Package::byServiceType('something')->get();
class Package extends Eloquent {
protected $table = 'package';
function serviceType()
{
return $this->belongsTo('ServiceType');
}
public static function getPackagesByServiceType($service)
{
return Package::with('serviceType')->where('title', '=', $service)->get();
}
}
You forgot the ->get();
The ->get() should be in the Model
public static function getPackagesByServiceType($service)
{
return Package::with('serviceType')->where('title', '=', $service)->get(); // here
}
and in the controller it should be like this:
$packages = Package::getPackagesByServiceType('something');
Hope that helps... I had similar issues in my Model - Controller structure....
I'm trying to make a mini CMS-type component and I have three models:
Page.php
class Page extends Eloquent {
protected $table = 'pages';
public function content() {
return $this->hasManyThrough('Content', 'PageGroup');
}
public function groups() {
return $this->hasMany('PageGroup');
}
}
PageGroup.php
class PageGroup extends Eloquent {
protected $table = 'page_groups'
public function group() {
return $this->hasMany("Content");
}
}
Content.php
class Content extends Eloquent {
protected $table = 'content';
public function content() {
return $this->hasMany("Content");
}
}
Edit:
I've set up my relationship models with the correct relationships.
$page = Page::find(1);
$page_group = $page->groups()->where('id', '=', 1)->get();
Returns the PageGroup collection belonging to the Page. I guess my new question is if it's possible to get a collection from that collection... Something like:
$content = $page_group->content;
Because that returns:
Undefined property: Illuminate\Database\Eloquent\Collection::$content
Does this make any sense? I apologize for the newbie question; I'm just getting into Laravel!
I feel like an idiot.
The method chain $page->groups()->where("id", "=", 1)->get()->content; will not work because $page->groups()->where("id", "=", 1); returns a list of rows!
$page->groups()->where("id", "=", 1)->first()->content will work.
I am playing with Laravel models and I need one to return a value that is not in the db table but it comes by running a model method. This method runs a query that groups and count grouped results.
The model method works just fine but I don't seem to be able to pre-fill the $quantity variable within the constructor with something different than 0.
So this is an excerpt of the model:
public $quantity;
function __construct($attributes = array(), $exists = false) {
parent::__construct($attributes, $exists);
$this->quantity = $this->quantity();
}
public function quantity()
{
$query = DB::table('carts_shopping')
->select('cart_id', DB::raw('COUNT(*) AS quantity'))
->where('cart_id',$this->cart_id)
->groupBy('cart_id')
->first();
return ($query) ? $query->quantity : 0;
}
While this is how I am trying to retrieve the results from controller:
$cartitems = Auth::user()->cartshopping;
foreach ($cartitems as $cartitem)
{
echo $cartitem->name;
echo $cartitem->quantity;
}
As you may guess 'cartshopping' comes from the user model being related with the model excerpt I pasted.
I also noticed that quantity() method gets called and it returns 0 all the time as if $this->cart_id was empty and, changing $this-cart_id with a real value the query itself doesn't even get executed.
Thanks a lot for any suggestion you guys can share.
Have you tried accessing the properties using $this->attributes?
public $quantity;
function __construct($attributes = array(), $exists = false) {
parent::__construct($attributes, $exists);
$this->quantity = $this->quantity();
}
public function quantity() {
$query = DB::table('carts_shopping')
->select('cart_id', DB::raw('COUNT(*) AS quantity'))
->where('cart_id', $this->attributes['cart_id'])
->groupBy('cart_id')
->first();
return ($query) ? $query->quantity : 0;
}
Failing that, you could try using the Eloquent accessors, which would be the best way to do it. This would make it dynamic as well, which could be useful.
class YourModel {
// Normal model data here
public function getQuantityAttribute() {
$query = DB::table('carts_shopping')
->select('cart_id', DB::raw('COUNT(*) AS quantity'))
->where('cart_id', $this->attributes['cart_id'])
->groupBy('cart_id')
->first();
return ($query) ? $query->quantity : 0;
}
}