I am making an app that filters products
I want to add this query chunk to my $products = $products-> newQuery();
I'm using $products = $products-> newQuery(); Because I am querying with filters. Example:
$products = $products->newQuery();
if ($request->has('brand') && !empty($brand)) {
$products->where('brand', '=', $brand);
}
if ($request->has('size') && !empty($size)) {
$products->whereHas('stocks', function($query) use ($size) {
$query->where('size', '=', $size);
});
}
I want to add this query
$best_sellers = OrderItem::select('product_id')->groupBy('product_id')->orderByRaw('SUM(quantity) DESC')->limit(2)->get();
I have previously used it in another method and it works but I don't know how to integrate it
I tried:
$products->whereHas('order_items', function($query) {
$query->select('product_id')->groupBy('product_id')->orderByRaw('SUM(quantity) DESC');
});
But it hasn't worked
Any idea? thanks
Updated with Error:
you need to use with() to add relationship data whereHas() it just for filter it does not add new key
example
$products->with(['order_items'=> function ($q) {
$q->select('product_id')->groupBy('product_id')->orderByRaw('SUM(quantity) DESC')->limit(2)->get();
}]);
Related
In larvel I'm using corcel and with the help of this comment I'm trying to retrieve only simple products and variations of variable products.
$type = array('product_variation','product');
$status = 'publish';
$posts =
\Corcel\Model\Post::
type($type)->
whereHas('taxonomies', function($q) {
$q->where('taxonomy', 'product_type')
->whereHas('term', function($q) {
$q->where('slug', 'simple');
})
// since variations have no product_type taxonomy, then
->orwhere('taxonomy','<>', 'product_type');
})->
status($status)->
latest()->
limit(500)->
get();
return $posts;
but it only returns product_variation(s), and no simple product. can some one please explain my wrong doing?
i had the same problem, i realized that i can use doesntHave
$posts = \Corcel\Model\Post::status('publish')
->whereIn('post_type', ['product_variation','product'] )
->doesntHave('taxonomies')
->orWhereHas('taxonomies', function ($query) {
$query->whereIn('taxonomy',['product_type'])
->whereHas('term', function($q) {
$q->where('slug', 'simple');
});
})
->latest()
->limit(50)
->get();
return $posts;
I am new to laravel,
I need to create a query for the db,
$query = Deal::query();
I want to use the wherehas operator.
this is my code that is worked.
else if ($group_by == 'precedence') {
if($get_deals_for == 'noprecedence'){
$get_deals_for = 0;
}
$precedenceStatus = $get_deals_for;
$query-> where('precedence', '=', $precedenceStatus);
// \Log::info('The request precedence: '.$precedenceStatus);
}
I want to add this code also to the query
if($person) {
$query->whereHas('personnel', function ($subQuery) use ($person) {
$subQuery->where('id', '=', $person);
});
}
So I need to change the first code?
how I can convert the first code to wherehas?
the first code is from table called deal, the second section is from realtionship called personnel.
the second section worked in other places in the code, I just need to fix the first section and not understand what to write in the use
I try this and get error on the last }
else if ($group_by == 'precedence') {
if($get_deals_for == 'noprecedence'){
$get_deals_for = 0;
}
$precedenceStatus = $get_deals_for;
$query-> where('precedence', '=', $precedenceStatus)
-> when ($person, function($query) use($person) {
$query->whereHas('personnel', function ($query) use ($person) {
$query->where('id', '=', $person);
});
})
}
There is a method you can use called when(, so that you can have cleaner code. The first parameter if true will execute your conditional statement.
https://laravel.com/docs/9.x/queries#conditional-clauses
$result = $query
->where('precedence', '=', $precedenceStatus)
->when($person, function ($query) use ($person) {
$query->whereHas('personnel', fn ($q) => $q->where('id', '=', $person));
})
->get();
You should also be able to clean up your precedence code prior to that using when( to make the entire thing a bit cleaner.
Querying to DB is so easy in laravel you just need to what you want what query you want execute after that you just have to replace it with laravel helpers.Or you can write the raw query if you cant understand which function to use.
using,DB::raw('write your sql query').
Now Most of the time whereHad is used to filter the data of the particular model.
Prefer this link,[Laravel official doc for queries][1] like if you have 1 to m relation ship so u can retrive many object from one part or one part from many object.like i want to filter many comments done by a user,then i will right like this.
$comments = Comment::whereHas('user', function (Builder $query) {
$query->where('content', 'like', 'title%');
})->get();
$comments = Here will be the model which you want to retrive::whereHas('relationship name', function (Builder $query) {
$query->where('content', 'like', 'title%');
})->get();
you can also write whereHas inside whereHas.
[1]: https://laravel.com/docs/9.x/eloquent-relationships#querying-relationship-existence
I am trying to get the news of a writer according to date passed. I have written function so far:
public static function getNewsByAuthorByDate($id, $year, $limit = 1){
return User::where('id', $id)->has('news')
->with(['news' => function($q) use(&$limit, &$year) {
$q->where('created_at', 'like', '%' . $year . '%')->latest()->limit($limit);
}])
->first();
}
But the news[] is null. Is it possible to get writer news according to date or do I have to try another way?
you can use whereYear
public static function getNewsByAuthorByDate($id, $year, $limit = 1){
return User::where('id', $id)->has('news')
->with(['news' => function($q) use(&$limit, &$year) {
$q->whereYear('created_at',$year)->latest()->limit($limit);
}])
->first();
}
and to use limit with eager loading you should use the package eloquent-eager-limit
According to the documentation:
The limit and take query builder methods may not be used when constraining eager loads.
Also, You don't need to use has method, the news would be empty if the user has no news:
return User::with(['news' => function($q) use($year) {
$q->whereYear('created_at', $year)->latest();
}])
->find($id);
this my eloquent query:
$data = Disciplines::where('type', '<>', 'Initiator')
->with(['discipline_boxes.assign.box' => function($query) {
$query->select('id');
}])
->get();
return $data;
i want return only array of id's of box relation
e.g:[2,3,4,5]
Solved!!
this worked for me!
$disciplines = new Disciplines();
$results = $disciplines->getAllBox_ID()->toArray();
dd(array_flatten(array_pluck($results,'discipline_boxes.*.assign.box.id')));
Potentially if you have the inverse for this chain of relationships you could get this information from the Box end (making name assumptions here):
Box::whereHas('assign.discipline_box.discipline', function ($q) {
$q->where('type', '<>', 'Initiator');
})->pluck('id');
In Laravel we can setup relationships like so:
class User {
public function items()
{
return $this->belongsToMany('Item');
}
}
Allowing us to to get all items in a pivot table for a user:
Auth::user()->items();
However what if I want to get the opposite of that. And get all items the user DOES NOT have yet. So NOT in the pivot table.
Is there a simple way to do this?
Looking at the source code of the class Illuminate\Database\Eloquent\Builder, we have two methods in Laravel that does this: whereDoesntHave (opposite of whereHas) and doesntHave (opposite of has)
// SELECT * FROM users WHERE ((SELECT count(*) FROM roles WHERE user.role_id = roles.id AND id = 1) < 1) AND ...
User::whereDoesntHave('Role', function ($query) use($id) {
$query->whereId($id);
})
->get();
this works correctly for me!
For simple "Where not exists relationship", use this:
User::doesntHave('Role')->get();
Sorry, do not understand English. I used the google translator.
For simplicity and symmetry you could create a new method in the User model:
// User model
public function availableItems()
{
$ids = \DB::table('item_user')->where('user_id', '=', $this->id)->lists('user_id');
return \Item::whereNotIn('id', $ids)->get();
}
To use call:
Auth::user()->availableItems();
It's not that simple but usually the most efficient way is to use a subquery.
$items = Item::whereNotIn('id', function ($query) use ($user_id)
{
$query->select('item_id')
->table('item_user')
->where('user_id', '=', $user_id);
})
->get();
If this was something I did often I would add it as a scope method to the Item model.
class Item extends Eloquent {
public function scopeWhereNotRelatedToUser($query, $user_id)
{
$query->whereNotIn('id', function ($query) use ($user_id)
{
$query->select('item_id')
->table('item_user')
->where('user_id', '=', $user_id);
});
}
}
Then use that later like this.
$items = Item::whereNotRelatedToUser($user_id)->get();
How about left join?
Assuming the tables are users, items and item_user find all items not associated with the user 123:
DB::table('items')->leftJoin(
'item_user', function ($join) {
$join->on('items.id', '=', 'item_user.item_id')
->where('item_user.user_id', '=', 123);
})
->whereNull('item_user.item_id')
->get();
this should work for you
$someuser = Auth::user();
$someusers_items = $someuser->related()->lists('item_id');
$all_items = Item::all()->lists('id');
$someuser_doesnt_have_items = array_diff($all_items, $someusers_items);
Ended up writing a scope for this like so:
public function scopeAvail($query)
{
return $query->join('item_user', 'items.id', '<>', 'item_user.item_id')->where('item_user.user_id', Auth::user()->id);
}
And then call:
Items::avail()->get();
Works for now, but a bit messy. Would like to see something with a keyword like not:
Auth::user()->itemsNot();
Basically Eloquent is running the above query anyway, except with a = instead of a <>.
Maybe you can use:
DB::table('users')
->whereExists(function($query)
{
$query->select(DB::raw(1))
->from('orders')
->whereRaw('orders.user_id = users.id');
})
->get();
Source: http://laravel.com/docs/4.2/queries#advanced-wheres
This code brings the items that have no relationship with the user.
$items = $this->item->whereDoesntHave('users')->get();