Laravel 5.3 Pluck vs All

Question

I have a question to ask

So I was trying to create a dropdownlist which will show data from another table. In my controller I declare those table in my create function

public function create()
{
    $tenants = Tenant::pluck('name','id');
    $categories = Category::pluck('name','id');
    return view('items.create', ['categories' => $categories, 'tenants' => $tenants]);
}

and in my views:

<div class='form-group'>
                        <label for="category_id" class="col-md-4 control-label">Item Category</label>
                        <div class="col-md-6">
                        <select class="form-control" name="category" id="categories">
                            @foreach($categories as $category)
                            {
                                <option value={{ $category->id }}>{{ $category->name }}</option>
                            }
                            @endforeach
                        </select>   
                        </div>
                    </div>

                     <div class='form-group'>
                        <label for="tenant_id" class="col-md-4 control-label">Tenant</label>

                        <div class="col-md-6">
                        <select class="form-control" name="tenant" id="tenants">
                            @foreach($tenants as $tenant)
                            {
                                <option value={{ $tenant->id }}>{{ $tenant->name }}</option>
                            }
                            @endforeach
                        </select>   
                        </div>

                        </div>

And it yields an error: Trying to get property of non-object

but if I change pluck to all as i did here:

public function create()
{
    $tenants = Tenant::all();
    $categories = Category::all();
    return view('items.create', ['categories' => $categories, 'tenants' => $tenants]);
}

its working. the problem is I only want to get the value of 'name' & 'id' and with all, it'll also returns the property that i dont need. how can i achieve that with pluck? and if i read the documentation, it says that pluck will retrieve all of the values for a given key but why does my pluck doesn't work? I'm new with php and laravel so any given guide will be so awesome.

Answer 1

When using pluck() you get the data in [id => 'name'] format, so do this:

@foreach($categories as $id => $category)
    <option value={{ $id }}>{{ $category }}</option>
@endforeach

And do the same with $tenants