Search in model and in its relations and paginate results - mysql

Question

So I'm building an ECommerce site using Laravel/MySQL, the product related tables I have are as follows: 'products', 'attributes', 'taxonomies' and 'tags'. When a user types a keyword to search for product, I want to search all 4 tables with one query to get the desired products, then I want to use Laravel paginate function to paginate the result, now how do I make it done in one query? Maybe some joins involved?
Here it is, the relationship of my database tables, as for my models, it is defined like this:
class Product extends Eloquent {
...
public function taxonomies() {
return $this->belongsToMany('Taxonomy', 'product_taxonomy', 'product_id', 'taxonomy_id');
}
...
// Same goes for attributes and labels
public function reviews() {
return $this->hasMany('Review', 'product_id');
}
}

Answer 1

Maybe you want something like this:
$products = Product::where('name', 'LIKE ', '%' . $keyword . '%');
$products = $products->orWhereHas('attributes',
function ($query) use ($keyword) {
$query->where('name', 'LIKE ', '%' . $keyword . '%');
}
);
$products = $products->orWhereHas('taxonomies',
function ($query) use ($keyword) {
$query->where('name', 'LIKE ', '%' . $keyword . '%');
}
);
$products = $products->orWhereHas('tags',
function ($query) use ($keyword) {
$query->where('name', 'LIKE ', '%' . $keyword . '%');
}
);
$products = $products->paginate(10);
Now you look in product name and in names of your relations (tags, taxonomies and attributes) and paginate 10 products.

Answer 2

You can try like this
$data = DB::table('products')
->join('attributes', 'products.attributes_id', '=', 'attributes.id')
->join('taxonomies', 'products.taxonomies_id', '=', 'taxonomies.id')
->join('tags', 'host_vulnerabilities.tags_id', '=', 'tags.id')
->where('products.id', '=', $id)
->select('products.id', 'attributes.name') //all required fields
->paginate(15);
I have just added sample example. Please update code as per your requirement

Answer 3

Use UNION for this,
SELECT product_id, product name FROM Products WHERE keyword = 'my_keyword' UNION
SELECT product_id, product name FROM Attributes WHERE keyword = 'my_keyword' UNION
..... Same for other tables
Moreover it will filter out repeated results as UNION works as UNION DISTINCT. But if you provide us with a schema or some db structure, can provide a better solution.
For Laravel, this may work you can create a view and query the view instead of the actual tables, or create your Paginator manually:
$page = Input::get('page', 1);
$paginate = 10;
$w1 = 'my_keyword';
$first = DB::table('products')->where('attribute', 'like', '"%'.$w1.'%"');
$second = DB::table('attributes')->where('attribute', 'like', '"%'.$w1.'%"');
$third = DB::table('taxonomies')->where('attribute', 'like', '"%'.$w1.'%"');
$fourth = DB::table('tags')->where('attribute', 'like', '"%'.$w1.'%"');
$union1 = $first->union($second);
$union2 = $third->union($union1);
$union3 = $fourth->union($union2);
$union3->get();
$slice = array_slice($union3, $paginate * ($page - 1), $paginate);
$result = Paginator::make($slice, count($union3), $paginate);
return View::make('yourView',compact('result'));