Laravel Query Builder: where condition based on user input - php

Question

Here is my output of print_r($_POST)
array([id] => '123', [name] => '', [place] => '', [color] => '')
Where name , place and color are optional fields submitted by user..... user may select only name, place or color, name + color, color + place, or all three name + color + place.
How can I put where condition for these options chosen by user? Let's say for example, In Laravel we select DB table using the following statement...
$Select_db = Db::table('mytable')
->where('name', Input::get('name'))
->where('place', Input::get('place'))
->where('color', Input::get('color'))
->select()
->get();
As you can see above condition works only if there is an input for all fields from user, based on user input I want add where condition, how do we fix this???
Note: In this particular scenario, I am aware I could use isset() for each condition. However, what if there are many optional inputs?

Answer 1

Try this:-
$Select_db = DB::table('mytable');
if (Input::get('name') != "")
$Select_db->where('name', Input::get('name'));
if (Input::get('place') != "")
$Select_db->where('place', Input::get('place'));
if (Input::get('color') != "")
$Select_db->where('color', Input::get('color'));
$result = $Select_db->get();
And if there are multiple columns to match, then try using this:-
$Select_db = DB::table('mytable');
foreach($_POST as $key => $val){
if(Input::get($key) != ""){
$Select_db->where($key, Input::get($key));
}
}
$Select_db->get();

Answer 2

what about
$Select_db = Db::table('mytable');
foreach($_POST as $key => $val) {
$Select_db->where($key, Input::get($key));
}
$Select_db->query()->get();
maybe consider to copy your $_POST and remove undesired values before you enter foreach:
unset($postcopy['badvar'])

Answer 3

public function filter(Request $request)
{
$first_name = $request->input('first_name');
$sur_name = $request->input('sur_name');
$email_work = $request->input('email_work');
$country = $request->input('country');
$position = $request->input('position');
$event_id = $request->input('event_id');
$event_name = $request->input('event_name');
$nature_of_business = $request->input('nature_of_business');
$mobile_number = $request->input('mobile_number');
$event_date = $request->input('event_date');
$record = DB::table('exceldatas');
if ($request->has('first_name')){
$record->where('first_name', $first_name);
}
if ($request->has('sur_name')) {
$record->where('sur_name', $sur_name);
}
if ($request->has('email_work')) {
$record->where('email_work', $email_work);
}
if ($request->has('country')) {
$record->where('country', $country);
}
if ($request->has('event_name')) {
$record->where('event_name', $event_name);
}
if ($request->has('nature_of_business')) {
$record->where('nature_of_business', $nature_of_business);
}
if ($request->has('mobile_number')) {
$record->where('mobile_number', $mobile_number);
}
if ($request->has('event_date')) {
$record->where('event_date', $event_date);
}
$record =$record->paginate(15);
return view('showresult')->with('record', $record);
}