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856 votes
29 answers

php - laravel nested relationships pivot table

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this is my database tables that each product can have multiple attributes and each attribute has multiple values that can be selected in the Select Box on the product edit page.

attribute table:

+

attribute_values table:

{-code-2}

products table:

{-code-3}

attribute_product table:

{-code-4}

relationships

{-code-5}

blade:

{-code-6}

how to add 'selected' to select box selected options (value_id in attribute_product)?


206
votes

Answer

---+ | attributes | +====+======+===========+ | id | name | type | +----+------+
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961
votes

Answer

-+ | 1 | size | selectbox | +----+------+
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533
votes

Answer

-+ | 2 | ... | .... | +----+------+
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817
votes

Answer

-+|||+
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403
votes

Answer

---------+ | attribute_values | +====+==============+=========+ | id | attribute_id | value | +----+
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252
votes

Answer

----+---------+ | 1 | 1 | sample1 | +----+
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368
votes

Answer

----+---------+ | 2 | 1 | sample2 | +----+
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20
votes

Answer

----+---------+ | 3 | 1 | sample3 | +----+
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961
votes

Answer

----+---------+|||+
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274
votes

Answer

------+ | products | +====+===========+ | id | name | +----+
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23
votes

Answer

-+ | 1 | product 1 | +----+
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84
votes

Answer

-+ | 2 | product 2 | +----+
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512
votes

Answer

-+|||+
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467
votes

Answer

---+ | attribute_product | +====+============+==============+==========+ | id | product_id | attribute_id | value_id | +----+
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474
votes

Answer

--+
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973
votes

Answer

----+
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880
votes

Answer

+ | 1 | 1 | 1 | 1 | +----+
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13
votes

Answer

--+
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555
votes

Answer

----+
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817
votes

Answer

+ | 2 | 1 | 1 | 2 | +----+
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439
votes

Answer

--+
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552
votes

Answer

----+
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140
votes

Answer

+|||class Attribute extends Model { public function products() { return $this->belongsToMany(Product::class); } } class AttributeValue extends Model { } class Product extends Model { public function attributes() { return $this->belongsToMany(Attribute::class, 'attribute_product') ->withPivot('value_id'); } }|||@foreach($product->attributes as $attribute) Attribute Name: {{ $attribute->name }} <select> @foreach($attribute->values as $value) <option id="{{ $value->id }}">{{ $value->id }}</option> @endforeach </select> @endforeach
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358
votes

Answer

Solution:

You just need to do

@foreach($product->attributes as $attribute)
    Attribute Name: {{ $attribute->name }}
    <select>
        @foreach($attribute->values as $value)
            <option id="{{ $value->id }}" {{ $attribute->pivot->value_id == $value->id ? 'selected' :  '' }} >{{ $value->id }}</option>
        @endforeach
    </select>
@endforeach
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