Dropdown menu from any table in database - Laravel - laravel-5

Question

I have a form, which has some text field.
Let me explain this field:
So_number from table sales_order
so_date from table sales_order
customer_name from table customers
and then I've got linked all of model and controller and views
My controller is linked of my 3 models.
and I try to call with {{}} this, as same as like variable as I made,
I call the details with this
<td>{{$so->so_number}}</td>
this is my web.php of details
Route::get('/so/{so_number}/details', 'So_Controller#details');
this is my So_Controller#details:
public function details($so_number)
{
$data_so = \App\Sales_Order::all();
$data_so_detail = \App\Sales_Order_Details::all();
$data_customer = \App\Customer_Model::all();
return view('salesorder.details', ['data_so_detail' => $data_so_detail, 'data_so' => $data_so, 'data_customer' => $data_customer]);
}
This is my views of my details.index.php
<div class="modal-body">
<div class="col-md-6">
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<input type="text" name="so_number" value="{{$data_so->so_number}}" class="form-text" required>
<span class="bar"></span>
<label for="so_number">Sales Order Number</label>
</div>
</div>
<div class="col-md-6">
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<input type="text" name="so_date" value="{{$data_so->so_date}}" class="form-text" required>
<span class="bar"></span>
<label for="so_date">Sales Order Date.</label>
</div>
</div>
<div class="col-md-6">
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<label for="customer_name">Customer Name</label>
<select name="customer_name" id="customer_name">
#foreach ($data_customer as $customerName)
<option value="{{$customerName->customer_name}}"></option>
#endforeach
</select>
</div>
</div>
<div class="col-md-6">
<div class="form-group form-animate-text" style="margin-top:40px !important;">
<label for="customer_id"></label>
<select name="customer_id" id="customer_id">
#foreach ($data_customer as $customerId)
<option value="{{$customerId->customer_id}}"></option>
#endforeach
</select>
</div>
</div>
And the error is
ErrorException (E_ERROR)
Property [so_number] does not exist on this collection instance. (View: /Applications/XAMPP/xamppfiles/htdocs/belajar_laravel/resources/views/salesorder/details.blade.php)
Previous exceptions
Property [so_number] does not exist on this collection instance. (0)
My expected output is list of items in dropdown.
Please help me.

Answer 1

In your details.blade.php, you have written
{{$data_so->so_number}}
whereas in controller, you have written
$data_so = \App\Sales_Order::all();
all() returns a collection which is like a 2 dimensional array. Either you have to iterate through $data_so to access 'so_number' or in controller you have to write
$data_so = \App\Sales_Order::first(); //this is an example, first() or find() will return an instance of the model and you can directly access it like $data_so->so_number.
In another case, check your method details($so_number).
In case you want to retrieve from \App\Sales_Order a record for $so_number, you may use find().
You may read https://laravel.com/docs/5.8/eloquent-relationships to connect multiple models.