populate drop-down list with database using ajax in laravel - html

Question

i'm trying to fetch data from the database in dropdown list but it is not showing ,i have also watch several tutorials but things are not working as expected
Controller :
public function cost(Request $request){
$lab_data = \DB::table('lab_category')->select('category_name')->get();
//return $lab_data;
return view('medicinecost')->with('lab_category',$lab_data);
}
Route :
Route::get('labdetails','Test#cost');
Route::get('labprice',function (){
return view('pages/medicinecost');
});
medicinecost.blade.php
<div class="form-group">
<select name="labCat" id="lab" class="form-control input-lg dynamic" data-dependent="labSubCat">
<option value="{{$lab_data}}">Select Lab Category</option>
#foreach($lab_data as $lb)
<option value="{{$lb->lab_category_id}}">{{$lb->category_name}}</option>
#endforeach
</select>
</div>
I am getting this error
ErrorException in 1180188cd7aaaebdb54a13bbf08bc2d80ab30f15.php line 15:
Undefined variable: lab_data (View: C:\xampp72\htdocs\hospital\resources\views\pages\medicinecost.blade.php)

Answer 1

use this
<div class="form-group">
<select name="labCat" id="lab" class="form-control input-lg dynamic" data-dependent="labSubCat">
<option value="">Select Lab Category</option>
#if(isset($lab_category))
#foreach($lab_category as $lb)
<option value="{{$lb->lab_category_id}}">{{$lb->category_name}}</option>
#endforeach
#endif
</select>
</div>
Route::get('labprice',function (){
$lab_data = \DB::table('lab_category')->select('category_name')->get();
//return $lab_data;
return view('pages/medicinecost')->with('lab_category',$lab_data);
});

Answer 2

In Controller you need to select lab_category_id as well :
$lab_data = \DB::table('lab_category')->select('lab_category_id','category_name')->get();
Also fix the way you pass params, And no need to pass lab_category :
return view('medicinecost')->with('lab_data');
In view make its default value like 0 or empty:
<option value="0">Select Lab Category</option>

Answer 3

try this code
controller
return view('medicinecost',['lab_category'=>$lab_data]);
medicinecost.blade.php
<div class="form-group">
<select name="labCat" id="lab" class="form-control input-lg dynamic" data-dependent="labSubCat">
<option value="">Select Lab Category</option>
#foreach($lab_category as $lb)
<option value="{{$lb->lab_category_id}}">{{$lb->category_name}}</option>
#endforeach
</select>
</div>

Answer 4

Error is here
<option value="{{$lab_data}}">Select Lab Category</option>
and also here
#foreach($lab_data as $lb)
You're defining $lab_data in the controller, but passed with the variable of lab_category in the view
So, used #foreach($lab_category as $lb) as they mentioned before in the answer and remove {{ $lab_data }} in the option-value

Answer 5

You may try this.
Your Controller
public function cost(Request $request){
$lab_category = \DB::table('lab_category')->select('category_name','lab_category_id')->get();
return view('medicinecost', compact('lab_category'));
}
Your View
<div class="form-group">
<select name="labCat" id="lab" class="form-control input-lg dynamic" data-dependent="labSubCat">
<option value="">Select Lab Category</option>
#foreach($lab_category as $lb)
<option value="{{$lb->lab_category_id}}">{{$lb->category_name}}</option>
#endforeach
</select>
</div>