Laravel-5 how to populate select box from database

问题:

I want to create a select box like the one below using illuminate\html :

<select>
    <option value="$item->id">$item->name</option>
    <option value="$item->id">$item->name</option>
</select>

In my controller I tried this:

public function create()
{
    $items = Items::all(['id', 'name']);

    return view('prices.create', compact('id', 'items'));
}

And in my view this:

<div class="form-group">
    {!! Form::Label('item', 'Item:') !!}
    {!! Form::select('item_id', $items, null, ['class' => 'form-control']) !!}
</div>

The issue is that instead of $item->name is displaying all the info of the entity.

回答1:

Laravel provides a Query Builder with lists() function

In your case, you can replace your code

$items = Items::all(['id', 'name']);

with

$items = Items::lists('name', 'id');

Also, you can chain it with other Query Builder as well.

$items = Items::where('active', true)->orderBy('name')->lists('name', 'id');

source: http://laravel.com/docs/5.0/queries#selects

---

Update for Laravel 5.2

Thank you very much @jarry. As you mentioned, the function for Laravel 5.2 should be

$items = Items::pluck('name', 'id');

or

$items = Items::where('active', true)->orderBy('name')->pluck('name', 'id');

ref: https://laravel.com/docs/5.2/upgrade#upgrade-5.2.0 -- look at Deprecations lists

回答2:

Laravel >= 5.3 method lists() is deprecated use pluck()

$items = Items::pluck('name', 'id');

{!! Form::select('items', $items, null, ) !!}

This will give you a select box with same select options as id numbers in DB

for example if you have this in your DB table:

id name
1  item1
2  item2
3  item3
4  item4

in select box it will be like this

<select>
<option value="1">item1</option>
<option value="2">item2</option>
<option value="3">item3</option>
<option value="4">item4</option>
</select>

I found out that pluck now returns a collection, and you need to add ->toArray() at the end of pluck...so like this: pluck('name', 'id')->toArray();

回答3:

Just change your controller to the following:

public function create()
{
    $items = Subject::all(['id', 'name']);
    return View::make('your view', compact('items',$items));
}

And your view to:

<div class="form-group">
  {!! Form::Label('item', 'Item:') !!}
  <select class="form-control" name="item_id">
    @foreach($items as $item)
      <option value="{{$item->item_id}}">{{$item->id}}</option>
    @endforeach
  </select>
</div>

Hope this will solve your problem

回答4:

Controller

 $campaignStatus = Campaign::lists('status', 'id');

compact('campaignStatus') will result in [id=>status]; //example [1 => 'pending']

return view('management.campaign.index', compact('campaignStatus'));

View

{!! Form::select('status', $campaignStatus, array('class' => 'form-control')) !!}

回答5:

Laravel use array for Form::select. So I passed array like below:

$datas = Items::lists('name', 'id');
$items = array();

foreach ($datas as $data)
{
    $items[$data->id] = $data->name;
}

return \View::make('your view', compact('items',$items));

In your view:

<div class="form-group">
    {!! Form::label('item', 'Item:') !!}
    {!! Form::select('item_id', $items, null, ['class' => 'form-control']) !!}
</div>

回答6:

In your controller, add,

public function create()
{
    $items = array(
        'itemlist' =>  DB::table('itemtable')->get()
      );

    return view('prices.create', $items);
}

And in your view, use

<select name="categories" id="categories" class="form-control">
  @foreach($itemlist as $item)
    <option value="{{ $item->id }}">{{ $item->name }}</option>
  @endforeach
</select>

In select box, it will be like this,

<select>
 <option value="1">item1</option>
 <option value="2">item2</option>
 <option value="3">item3</option>
 ...
</select>

回答7:

Laravel 5.3 use pluck($value, $key )

$value is displayed in your drop list and $key is id

controller

$products = Product::pluck('name', 'id');

return view('main.index', compact('products'));

view

{{ Form::select('id', $products, null, ['class' => 'form-control']) }}

回答8:

Laravel 5.*

In your controller:

$items= Items::pluck('name', 'id')->toArray();
return view('your view', compact('items', $items));

In your view:

{{ Form::select('organization_id', $items, null, []) }}

回答9:

I have added toArray() after pluck

$items = Item::get()->pluck('name', 'id')->toArray();

{{ Form::select('item_id', [null=>'Please Select'] + $items) }}

回答10:

For Laravel 5 :

$items = Items::lists('name', 'id');

Push an item onto the beginning of the collection.

$items->prepend($value, $key = null);

回答11:

Try this one. Without using controller

{{ Form::select('apartment_id', \App\Apartment::all()->pluck('apartment_name', 'apartment_id')->toArray(), null,['class'=>'select2 form-control', 'multiple'=>'multiple']) }}

回答12:

sorry for the late reply

Obivesly lists method has been deprecated in laravel

but you can use the pluck method

For Eg:

laravel 5.7

 public function create()
{
  $countries =  Country::pluck('country_name','id');
  return View::make('test.new')->with('countries', $countries);
}

and in the view if you are FORM components just pass as

{{  Form::select('testname',$countries,null,['class' => 'required form-control select2','id'=>'testname']) }}

if will generate the dropdown

but i have a situation to show that select country as the first option and as null value

<option value="" selected="selected">--Select  Country--</option>

so i have reffered the

https://stackoverflow.com/a/51324218/8487424

and fixed this

but in later times if i want to change this i hate being changing it in the view

so have created the helper function based on https://stackoverflow.com/a/51324218/8487424 and placed in the Country Model

public static  function toDropDown($tableName='',$nameField='',$idField='',$defaultNullText='--Select--')
        {
            if($idField==null)
                {
                    $idField="id";
                }
            $listFiledValues = DB::table($tableName)->select($idField,$nameField)->get();

            $selectArray=[];
            $selectArray[null] = $defaultNullText;
            foreach ($listFiledValues as $listFiledValue) 
            {
                $selectArray[$listFiledValue->$idField] = $listFiledValue->$nameField;
            }
            return $selectArray;
        }

and in controller

public function create()
    {
      $countries = Country::toDropDown('countries','name','id','--Select  Country--');
      return View::make('test.new')->with('countries', $countries);
    }

and finally in the view

 {{  Form::select('testname',$countries,null,['class' => 'required form-control select2','id'=>'testname']) }}

and the result is as expected

but i strongly recommend to use pluck() method

回答13:

Many has been said already but keep in mind that there are a times where u don't want to output all the records from the database into your select input field ..... Key example I have been working on this school management site where I have to output all the noticeboard categories in a select statement. From my controller this is the code I wrote

Noticeboard:: groupBy()->pluck('category')->get();

This way u get distinct record as they have been grouped so no repetition of records

回答14:

in laravel 5.6 you can use $request->nameofselectbox to get value of option and use $request->input('nameofselectbox') to get title that show in option