I have two tables products and categories and a pivot table category_product.
I have added relation in Product.php is below.
public function categories()
{
return $this->belongsToMany(Category::class);
}
I have added relation in Category.php is below.
public function products()
{
return $this->belongsToMany(Product::class);
}
Both are working fine.
But what I want is, I want to take all the categories which has products and the products should not return more than 6 records.
Meaning I have a two categories Music, Movies and both have more than 50+ products.
The code should be return only 6 products for both Music, Movies categories.
This is what I tried,
Category::with(['products' => function ($query){
return $query->select()->limit(6);
}, 'products.properties'])
->whereHas('products', function ($query){
return $query->select()->limit(6);
})->when($slug, function($query) use($slug){
$query->whereIn('slug', $slug);
})->get();
and this,
Category::addSelect([
'products' => Product::select('id')->whereColumn('products.id', 'categories.id')->orderBy('id')->limit(6)
])->when($slug, function($query) use($slug){
$query->whereIn('slug', $slug);
})->get()
Second try returns error,
"stripos() expects parameter 1 to be string, object given"
I am using laravel 6.
Thanks in advance, any answers and suggestion welcome.
Added My Answer Below
please use this. Also add all your logics to eloquent, not in controller.
public function categories()
{
return $this->belongsToMany(Category::class)->limit(6);
}
I found a solution for my question. Please have a check and please advice me if any better way to solve it.(mainly I want to reduce the number of queries)
The solution is
public function getProductsBasedOnCategory(array $slug){
$categories = Category::select()->when($slug, function($query) use($slug){
$query->whereIn('slug', $slug);
})->get();
$res = new Collection();
foreach ($categories as $category){
$category->products = $category->products()->limit(6)->get();
$res->push($category);
}
return $res;
}
This function executing queries how many categories I have.
If I have 10 categories, its executing 10 queries. Exclude $categories query
Is this answer is good or you have any better solution. I want to reduce the number of queries execution.
Please suggest.
you can use like below.
$cat = Category::with('products')->when($slug, function($query) use($slug){
$query->whereIn('slug', $slug);
})->get();
foreach ($cat as $key => $value) {
$value->products->first();
}
Related
I have two models with relations as defined below
Order
public function owner()
{
return $this->belongsTo(User::class, 'owner_id');
}
User
public function company(){
return $this->belongsTo(Company::class, 'company_id');
}
company table have 'title' field.
what I want is to get all the orders sorted/order by company title. I've tried different solution but nothing seems to work. Any help or hint would be appreciated.
Recent solution that I tried is
$query = OrderModel::whereHas('owner', function($q) use ($request){
// $q->orderBy('owner');
$q->whereHas('company',function ($q2) use ($request){
$q2->orderBy('title',$request->get('orderByDirection') ?? 'asc');
});
});
but I am not getting user and company relation in query results. also the result remains same for 'ASC' and 'DESC' order.
You could sort the query after adding join like:
return Order::join('users', 'users.id', '=', 'owner_id')
->join('companies', 'companies.id', '=', 'users.company_id')
->orderBy('companies.title')
->select('orders.*')
->get();
You can define new relations in User and Company models.
User
public function orders()
{
return $this->hasMany(Order::class);
}
Company
public function users()
{
return $this->hasMany(User::class);
}
Now you can fetch companies that are in asc order and with the use of relation, you can fetch users and orders. So the ORM like be,
$companies = Company::with('users.orders')->orderBy('title', 'ASC')->get();
So these are the company-wise orders. You can use this too.
i need to search in last record of an relationship in Laravel 7. Here is my code, hope u understand my question :)
$Collection = ServiceRequest::whereHas('ServiceRequestSignatureFlows', function ($query) use ($ou_id) {
return $query->latest()->where('user_id',666);
})
->orderBy('name', 'ASC')
->get();
a ServiceRequest has many SignatureFlows, but i need only search on last flow inserted. I think that when i make ->latest(), my search could search 666 only in last rows, but doesnt happens.
Thanks
you can create the new relation HasOne and filter by it.
public function ServiceRequestSignatureLastFlow()
{
return $this->hasOne(ServiceRequestSignatureFlows::class)->orderByDesc('id');
}
and than
$collection = ServiceRequest::whereHas('ServiceRequestSignatureLastFlow', function ($query) use ($ou_id) {
$query->where('user_id', $ou_id);
})->orderBy('name', 'ASC')->get();
Remove the return inside the whereHas
I am developing a e-commerce website.
I have 3 tables
1.prodcts table
2.conditions table
3.condition_product table
A product can have many conditions.
particular condition belongs to many products.
Now I have a product which belongs to 3 conditions.
I want to get all related products which belongs to these 3 conditions.
How can i achieve this?
product.php
public function conditions(){
return $this->belongsToMany(Condition::class)->withTimestamps();
}
condition.php
public function products(){
return $this->belongsToMany(Product::class)->withTimestamps();
}
This is my code:
public function productDetails(Product $product)
{
$a = $product->id;
$relatedProducts = Product::whereHas('conditions.products', function($q) use($a) {
$q->where('id', $a);
})
->get();
return view('pages/product', compact('product','relatedProducts'));
}
But I am getting error.
Use the whereHas() method with nested relationships:
Product::whereHas('conditions.products', function($q) use($productId) {
$q->where('id', $productId);
})
->get();
This will give you products that have conditions of a specified product.
Alternatively, you could do this:
$conditionIds = Product::find($productId)->conditions->pluck('id');
$products = Product::whereHas('conditions', function($q) use($conditionIds) {
$q->whereIn('id', $conditionIds);
})
->get();
A good practice is to always specify witch table the 'id' field is referencing too, because if not, it could both reference the 'conditions' table or the 'products' table 'id' field :
$relatedProducts = Product::whereHas('conditions.products', function($q) use($a) {
$q->where('products.id', $a);
})
->get();
You could see this answer about SQL ambiguous column name.
Hi all,
I'm building an application in Laravel, I want to get all item in an article category without using this Eloquent.
My code is
$info = Article::find($article_id);
$cate_info = $info->article_categories()->first();
if($cate_info){
$same = Article::with(['article_categories' => function ($query) use ($cate_info){
$query->where('articles_category.ID' ,$cate_info->ID);
}])->where('ID' ,'!=' ,$article_id)->get();
}
And I get all articles. How to solve.
Article and Article_Category is in many to many relationship.
Thanks.
If you want to have all the articles of a particular article_categories you can use whereHas method, now suppose you have name as a field column in categories table, so you can have something like this:
public function getData(Request $request)
{
$category = $request->categoryName;
// $category = 'ABC Category';
$articles = Article::whereHas('article_categories', function($query) use($category) {
$query->where('name', 'like', '%'.$category.'%');
})->get();
return response()->json(['articles' => $articles], 200);
}
Hope this helps.
I am testing eloquent for the first time and I want to see if it suit my application.
I have Product table:
id, name
and model:
class Produit extends Eloquent {
public function eavs()
{
return $this->belongsToMany('Eav')
->withPivot('value_int', 'value_varchar', 'value_date');
}
}
and eav table:
id, name, code, field_type
and pivot table:
product_id, eav_id, value_int, value_varchar, value_date
class Eav extends Eloquent {
public function produitTypes()
{
return $this->belongsToMany(
'ProduitType'
->withPivot('cs_attributs_produits_types_required');
}
All this is working.
But I want to search in that relashionship:
e.g: all product that have eav_id=3 and value_int=3
I have tested this:
$produits = Produit::with( array('eavs' => function($query)
{
$query->where('id', '3')->where('value_int', '3');
}))->get();
But I get all the product, and eav data only for these who have id=3 and value_int=3.
I want to get only the product that match this search...
Thank you
I know the question is very old. But added the answer that works in the latest versions of Laravel.
In Laravel 6.x+ versions you can use whereHas method.
So your query will look like this:
Produit::whereHas('eavs', function (Builder $query) {
// Query the pivot table
$query->where('eav_id', 3);
})->get()
My suggestion and something I like to follow is to start with what you know. In this case, we know the eav_id, so let's go from there.
$produits = Eav::find(3)->produits()->where('value_int', '3')->get();
Eager loading in this case isn't going to save you any performance because we are cutting down the 1+n query problem as described in the documentation because we are starting off with using find(). It's also going to be a lot easier to read and understand.
Using query builder for checking multiple eavs
$produits = DB::table('produits')
->join('eav_produit', 'eav_produit.produit_id', '=', 'produits.id')
->join('eavs', 'eavs.id', '=', 'eav_produit.eav_id')
->where(function($query)
{
$query->where('eav_produit.value_int','=','3');
$query->where('eavs.id', '=', '3');
})
->orWhere(function($query)
{
$query->where('eav_produit.value_int','=','1');
$query->where('eavs.id', '=', '1');
})
->select('produits.*')
->get();
Making it work with what you already have...
$produits = Produit::with( array('eavs' => function($query)
{
$query->where('id', '3')->where('value_int', '3');
$query->orWhere('id', '1')->where('value_int', '1');
}))->get();
foreach($produits as $produit)
{
if(!produit->eavs)
continue;
// Do stuff
}
From http://four.laravel.com/docs/eloquent:
When accessing the records for a model, you may wish to limit your results based on the existence of a relationship. For example, you wish to pull all blog posts that have at least one comment. To do so, you may use the has method
$posts = Post::has('comments')->get();
Using the "has()" method should give you an array with only products that have EAV that match your criteria.
$produits = Produit::with( array('eavs' => function($query)
{
$query->where('id', '3')->where('value_int', '3');
}))->has('eavs')->get();