Laravel query with multiple wheres depending on conditions - laravel

Question

I'm new to Laravel and I'm trying to build a query.
I want to add multiple where by condititions, but I can't achieve it.
If I do it, it works:
$query = Frete::all();
//or
$query = Frete::where('estado_destino_id', '=', $request->destino);
But, what I want is to set multiple where based on some conditions, something like this:
public function fretes(Request $request){
$query = Frete::all();
if ($request->destino){
$query->where('estado_destino_id', '=', $request->destino);
}
if ($request->veiculo){
$query->where('veiculo_id', '=', $request->veiculo);
}
$query->get();
return response()->json($query);
}
The above code returns all table and it is ignoring wheres.
I also tried this $query = DB::table('fretes'); instead of $query = Frete::all();
This way, JSON returned is:
{
"connection": {},
"grammar": {},
"processor": {},
"bindings": {
"select": [],
"from": [],
"join": [],
"where": [
1
],
"having": [],
"order": [],
"union": []
},
"aggregate": null,
"columns": null,
"distinct": false,
"from": "fretes",
"joins": null,
"wheres": [
{
"type": "Basic",
"column": "estado_destino_id",
"operator": "=",
"value": 1,
"boolean": "and"
}
],
"groups": null,
"havings": null,
"orders": null,
"limit": null,
"offset": null,
"unions": null,
"unionLimit": null,
"unionOffset": null,
"unionOrders": null,
"lock": null,
"operators": [
"=",
"<",
">",
"<=",
">=",
"<>",
"!=",
"<=>",
"like",
"like binary",
"not like",
"ilike",
"&",
"|",
"^",
"<<",
">>",
"rlike",
"regexp",
"not regexp",
"~",
"~*",
"!~",
"!~*",
"similar to",
"not similar to",
"not ilike",
"~~*",
"!~~*"
],
"useWritePdo": false
}
I've seen many posts and I've tried to implement it without success.

Answer 1

The all() method doesn't return a query. It executes SELECT * FROM table and returns the results. You need to start a new query then add the conditions to it Frete::query();
public function fretes(Request $request){
$query = Frete::query();
if ($request->destino){
$query->where('estado_destino_id', '=', $request->destino);
}
if ($request->veiculo){
$query->where('veiculo_id', '=', $request->veiculo);
}
$results = $query->get();
return response()->json($results);
}

Answer 2

use here conditional-clauses
public function fretes(Request $request){
$query = Frete::when($request->destino,function($q,$request) {
return $query->where('estado_destino_id', '=', $request->destino);
})->when($request->veiculo,function($q,$request) {
return $query->where('veiculo_id', '=', $request->veiculo);
})->get();
return response()->json($query);
}
Sometimes you may want clauses to apply to a query only when something
else is true. For instance you may only want to apply a where
statement if a given input value is present on the incoming request.
You may accomplish this using the when method.