laravel display data on a page based on id - laravel

Question

I have a page that shows links with name of businesses that are retrieved in database like this:
Controller:
public function viewBusiness() {
// Return our "website" object
$business = Business::all();
// Pass the contents of the "html" property to the view
return view('viewBusiness', ['business' => $business]);
}
View:
#extends('master') #section('title', 'Live Oldham') #section('content')
#section('content')
#foreach ($business as $businesses)
<a target="_blank" href="{{ url('business/' . $businesses->name) }}"> {{($businesses->name) }}
</a> #endforeach
#endsection
Route:
Route::get('business/list', 'BusinessController#viewBusiness')->name('viewBusiness');
I then have added a function where user click on a link and it is taken to a page which displays all data for that specific business, however it diplays all data but for all businesses.
Controller:
function displayBusiness() {
$business = Business::all();
$address = Address::all();
return view('displayBusiness', ['business' => $business, 'address' => $address]);
}
View:
#foreach ($business as $businesses)
<p>{{$businesses->name}}</p>
<p>{{$businesses->email}}</p>
#endforeach
#foreach ($address as $addresses)
<p>{{$addresses->firstline_address}}</p>
<p>{{$addresses->secondline_address}}</p>
<p>{{$addresses->town}}</p>
<p>{{$addresses->city}}</p>
<p>{{$addresses->postcode}}</p>
<p>{{$addresses->telephone}}</p>
#endforeach
Route:
Route::get('business/{name}', 'BusinessController#displayBusiness')->name('displayBusiness');
Now here's the question, how can this code be modified so only a business that match either bussiness->name or business->id is displayed. (I guess name is taken when user clicks on a name.
Another question is how to restrict the url so that if localhost/business/{name} is not equal to any business->name in the database returns error? at the moment it shows the page no matter what you enter.
Thanks!

Answer 1

I do not know if I understood the question, but that may be the beginning of a solution ...
First view :
#extends('master') #section('title', 'Live Oldham')
#section('content')
#foreach ($business as $businesses)
<a target="_blank" href="{{ url('business/' . $businesses->id) }}"> {{($businesses->name) }}
</a> #endforeach
#endsection
Second Controller :
function displayBusiness($id) {
$business = Business::find($id);
$address = Address::find($id);
return view('displayBusiness', compact('business', 'address'));
}
Second View :
<p>{{$business->name}}</p>
<p>{{$business->email}}</p>
<p>{{$address->firstline_address}}</p>
<p>{{$address->secondline_address}}</p>
<p>{{$address->town}}</p>
<p>{{$address->city}}</p>
<p>{{$address->postcode}}</p>
<p>{{$address->telephone}}</p>
Second Route :
Route::get('business/{id}', 'BusinessController#displayBusiness')->name('displayBusiness');

Answer 2

Route parameters are available in the controller function as parameters. Now you can build a query with this function. If your query does not return any results, you can send the user back to the business overview.
function displayBusiness($name) {
$business = Business::where('name', $name)->orWhere('id', $name)->first();
if ($business === null)
{
// No business with this name or id found.
// Redirect to businesses list page.
}
$address = Address::all();
return view('displayBusiness', ['business' => $business, 'address' => $address]);
}