Update all fields except one field - laravel

Question

public function update(Request $request, $id)
{
$house = House::find($id);
$house->name = $request->name;
$house->code = $request->code;
$house->description = $request->description;
$house->address = $request->address;
$house->owner_name = $request->owner_name;
$house->manager_name = $request->manager_name;
if($house->update()){
return redirect()->route('houses')
->with('alert.status', 'success')
->with('alert.message', 'Successfully Updated.');
}
else{
return redirect()->route('houses')
->with('alert.status', 'danger')
->with('alert.message', 'Try Again.');
}
}
Here i want to update all my fields except code when the code already exists in the database.How can i do that please give some solution.Thank you in advance.

Answer 1

You can use the null coalescing operator, available in php version 7.
In short, you can do this:
public function update(Request $request, $id)
{
$house = House::find($id);
$house->code = $house->code ?? $request->code;
$house->save();
}
If $house->code is different from null, this will be used if it will not use $request->code.
https://www.tutorialspoint.com/php7/php7_coalescing_operator.htm

Answer 2

do this way with ternary condition :
public function update(Request $request, $id)
{
$house = House::find($id);
$house->code = !empty($house->code) && $house->code!= NULL ? $house->code : $request->code;
}

Answer 3

Use a if :
public function update(Request $request, $id)
{
$house = House::find($id);
$house->name = $request->name;
if($house->code == NULL)
$house->code = $request->code;
$house->description = $request->description;
$house->address = $request->address;
$house->owner_name = $request->owner_name;
$house->manager_name = $request->manager_name;
$house->save();
if($house->update()){
return redirect()->route('houses')
->with('alert.status', 'success')
->with('alert.message', 'Successfully Updated.');
}
else{
return redirect()->route('houses')
->with('alert.status', 'danger')
->with('alert.message', 'Try Again.');
}
}
You should use the save() method after you made all this changes.

Answer 4

You can check for code existence on database by Eloquent: Mutators like below on your House Model
class House extends Model
{
//your codes
public function setCodeAtrribute($value)
{
if ($this->attributes["code"] != null) $this->attributes["code"] = $value
}
}
You can also check here for more information