I need to get the list of product categories from the table.
2 tables in total. tblProduct & tblProductCatLink
1 product can have many product category link.
tblProductCatLink consists of product_id, category_id
Now from my controller & view, i want to get the list of categories belong to one product.
Product.php
public function productcategorylink(){
return $this->HasMany('App\ProductCategoryLink', 'product_id', 'id');
}
ProductCategoryLink.php
public function projects(){
return $this->hasMany('App\Project', 'id', 'product_id');
}
Controller
foreach ($projects as $project) {
foreach ($project->productcategorylink as $value) {
echo $value->category_id;
}
}
The above code is returning first row of category for the product only. I had 3 rows of records for product 297 in my DB.
I need to access the product category link from the view while I looping the product data
In a controller:
$products = Product::with('productcategorylink')->get();
In view:
#foreach ($products as $product)
#foreach ($product->productcategorylink as $link)
{{ $link->category_id }}
#endforeach
#endforeach
You need to call productcategorylink and projects. So it would be
$projects = projects();
foreach ($projects as $project) {
$productCategoryLink = $project->productcategorylink();
foreach ($productCategoryLink as $value) {
echo $value->category_id;
}
}
Related
Help needed in laravel
I am trying to display products based on category & i have done that. I need to display the category name in product view file but not able to.
Created table
products with id , pname , cid
categories with id , cname
Route file : Route::get('/categories/{id}', 'CategoriesController#show');
Route::get('/categories/', 'CategoriesController#index');
My Controller
public function show($id)
{
$category_products=product::where('cid',$id)->get();
return view ('product',compact('category_products',$id));
}
My View
#foreach ($category_products as $product)
{{$product->$product->pname}}
#foreach
I want to display the category name above the products list
In your Category Model add the relationship:
public function products(){
return $this->hasMany('App\Product','cid');
}
In your Controller, get all categories and eager load your Products:
$categories=Category::with('products')->get();
return view ('product',compact('categories'));
In your blade view:
#foreach ($categories as $category)
{{$category->cname}}
#foreach ($category->products as $product)
{{$product->pname}}
#foreach
#foreach
I need your help...
Can't figure out where the problem is.
I am trying to show all products of a subcategory.Sometimes it shows the first or the last record. Then it repeats many times the same record( as the cycle is).
category: id, name, visible
products:id, name,
category_products:id, id_product, id_category
Route::get('navigation/{id}',function($id){
$prods= \App\Products_to_Categories::where('id_category',$id)->get();
$products=array();
foreach ($prods as $prod)
{
$products[] = \App\Products::find($prod->id_product)->
where('visible','yes')
-> where('delete','no')->first();
}
return view('subcategories.order_products',
['products'=>$products ]);}
View blade
<div class="col-md-6 col-md-offset-1">
<ul id="sortable">
#foreach($products as $product)
<li class="ui-state-default" id="{{ $product->id}}"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span> {{$product->name}}</li>
#endforeach
</ul>
</div>
It looks like products and categories are related through the join table category_products, so you can setup a belongsToMany() relationship and query from Category to Product without looping over the join table.
https://laravel.com/docs/5.7/eloquent-relationships#many-to-many
Category model:
public function products()
{
return $this->belongsToMany(\App\Products::class, 'category_products', 'id_category', 'id_product');
}
Products model:
public function categories()
{
return $this->belongsToMany(\App\Category::class, 'category_products', 'id_product', 'id_category');
}
Controller code:
$category = Category::find($id);
$products = $category->products()
->where('visible', 'yes')
->where('delete', 'no')
// ->inRandomOrder() // un-comment this if you want results in random order
->get();
Try this in Laravel >= 5.2: :
$prods= \App\Products_to_Categories::where('id_category',$id)->get();
$products=array();
$whereIn = array();
foreach ($prods as $prod)
{
$whereIn[] = $prod->id_product;
}
$products[] = \App\Products::find($prod->id_product)
->where('visible','yes')
-> where('delete','no')
->whereIn('id', $whereIn)
->orderByRaw('RAND()')
->get();
This will give you the list of products of a specific category in random order.
Laravel 4.2.7 - 5.1:
User::orderByRaw("RAND()")->get();
Laravel 4.0 - 4.2.6:
User::orderBy(DB::raw('RAND()'))->get();
Laravel 3:
User::order_by(DB::raw('RAND()'))->get();
source :
Laravel - Eloquent or Fluent random row
I have a project with 2 tables(Categories and products). They have One to Many relationship. Many products have one Category. Am pulling products of a specific category(together with its price and description) and storing in one variable so that I can use in the view. In the view am having a foreach loop whereby I want to display each row from the products table of a specific category(a product with its price and description) but it fails,,please assist?
FrontController
public function itemOne() {
//Get all phones(Have category of 1 ) in categories table
$mobile = Category::find(1)
->products()
->whereNotNull("image")
->whereNotNull("name")
->whereNotNull("description")
->whereNotNull("price")
->whereNotNull("category_id")->get();
return view('front.products')->withItems($mobile);
}
Products.blade.php
#foreach($items as $item)
<img src="{{ asset('images/'.$item->image) }}">
<br> {{ $item->name}} <br> {{ $item->price }}
#endforeach
public function itemOne() {
//Get all phones(Have category of 1 ) in categories table
$mobile = Category::find(1)
->products()
->whereNotNull("image")
->whereNotNull("name")
->whereNotNull("description")
->whereNotNull("price")
->whereNotNull("category_id")->get();
return view('front.products',compact('items'));
}
use compact in return
I was wondering what the cleanest way was to count the number of posts that are connected to a category in my blog.
Here is how the table relationship is set up.
What I have is a hasMany relationship from the Category to the Post models like this:
In Categories Model
public function blog_posts()
{
return $this->hasMany('App\Http\Models\Blog_Post', 'category_id');
}
And in the Blog_Post Model
public function blog_categories()
{
return $this->belongsTo('App\Http\Models\BlogCategories', 'category_id');
}
In effect all I want to do is be able to return to my view the total number of posts that each category has as shown below. Where x is the number of posts within each category.
cat1 (x)
cat2 (x)
cat3 (x)
It's not hard to count I know however as I only want a count I do not want to also retrieve the records as they are not required and I also do not want to create more queries than is necessary.
I have not completed the view as yet but probably a start would be to pass through the categories in a loop to display each and add the count at the same time?
#foreach ($categories as $category)
{!! $category->name !!} - {!! Count of posts here !!}
#endforeach
Hopefully that is clear(ish)!
Eager load the relation in your controller:
public function index()
{
$categories = Category::with('blog_posts')->get();
return view('categories.index', compact('categories'));
}
You can then use the count() method on the blog_posts relation when looping over categories in your view:
#foreach ($categories as $category)
<li>{{ $category->name }} ({{ $category->blog_posts->count() }})</li>
#endforeach
EDIT: Since Laravel 5.3, you can use withCount() to load counts of relations, i.e.
$categories = Category::withCount('blog_posts')->get();
This will make the count available via a property:
foreach ($categories as $category) {
$blog_posts_count = $category->blog_posts_count;
}
The nicest way to do it with eager loading support I know is to create a separate relation with the post count. Check this out:
public function blog_posts_count() {
return $this->hasOne('App\Http\Models\Blog_Post', 'category_id')
->selectRaw('category_id, count(*) as aggregate')
->groupBy('category_id');
}
public function getBlogPostsCountAttribute() {
if(!array_key_exists('blog_posts_count', $this->relations))
$this->load('blog_posts_count');
$related = $this->getRelation('blog_posts_count');
return $related ? (int) $related->aggregate : 0;
}
Usage is simple:
{{ $category->blog_posts_count }}
I have categories and items tables. Each item belongs to only one category and each category has many items. So, in Category model I defined this relationship:
public function items()
{ return $this->hasMany('Item', 'catid'); }
and I retrieve data for a category this way:
$category = Category::find($id);
return View::make('admin.categories.catdetails')->with('category', $category);
and in my view I can loop through data:
#foreach ($category->items as $item)
<tr>
<td> {{ $item->name }} </td>
<td> {{number_format($item->price, 2, '.', '')}} </td>
</tr>
#endforeach
but this results in all items in on page. How to make use of laravel pagination in case that I have so many items for one page??
How can I use
::paginate() // in controller or model
->links() // in view
as, so far, it throws many errors and I can't figure it out.
Thanks in advance.
You can call paginate() on the relationship object, which you access by ->items() (not ->items)
$items = $category->items()->paginate(10);
return View::make('admin.categories.catdetails')
->with('category', $category)
->with('items', $items);
Then in your view:
#foreach ($items as $item)
And:
$items->links()
You could use an attribute accessor to achieve what you want. In your model:
public function getPaginatedItemsAttribute(){
return $this->items()->paginate(10);
}
And then you use it like this:
#foreach ($category->paginatedItems as $item)
And:
$category->paginatedItems->links()