laravel orm: different result from almost same query - php

Question

I've a very big doubt about how works laravel for a very simple thing:
If I call:
$companies=User::All();
Then I can use statement like this in a forach:
foreach($companies as $company)
$company['new_field']= 'something';
If i'm limiting the output of the query like:
$companies = DB::table('companies')
->select('id','name','email','business_name',...)->get();
The things doesnt work as before,
I try with or without the ->get()
I try to convert with ->toArray() (errors rised)
I try with put() and push() for collections method and agains errors...
How can I add a field in every item of the collection just to pass it to a view?

Answer 1

Try like this, hope it works for you:
$users=User::select('id','name','email','business_name',...)->get()->toArray();
and then use foreach loop like this:
foreach($users as $key => $value ){
$users[$key]['newField'] = "Demo";
}

Answer 2

If you are using Laravel and model in it so there is a better way to add custom attribute or field here is what i do for custom field
For Example :
There is a Model Name User
so in User Model
add a property name appends like :
class User extends Model
{
protected $appends = ['new_field'];
public function getNewFieldAttribute() // defining field logic here
{
return // your code
}
So you no need to use foreach and looping and adding new field
for more have a look on laravel doc : https://laravel.com/docs/5.5/eloquent-mutators#accessors-and-mutators
Suggestion
you can limit your output with Model too.
User::select('id','name','email','business_name',...)->get();
if you are making an array like
User::select('id','name','email','business_name',...)->get()->toArray();
so this will also give you your custom field