make a use of those links we've created

* override index layouts
* add specific field renderer in overrides

admin/tmpl/idea/create.blade.php

@@ -0,0 +1,3 @@
+@extends('crud.create')
+
+@include('fields')

admin/tmpl/idea/edit.blade.php

@@ -0,0 +1,3 @@
+@extends('crud.edit')
+
+@include('fields')

admin/tmpl/idea/fields.blade.php

@@ -0,0 +1,16 @@
+@php
+    /** @var \Joomplace\X\Model $item */
+@endphp
+
+@section('field.project_id')
+    @php
+        $field = 'project_id';
+    @endphp
+    <label>@lang($item->getLabelFor($field))</label>
+    <select name="{{$field}}">
+        <option disabled="disabled" value="">@lang('COM_ROADMAP_IDEA_SELECT_THE_PROJECT')</option>
+        @foreach(\Joomplace\Component\Roadmap\Admin\Model\Project::all() as $project)
+            <option value="{{$project->id}}" {{$project->id==$item->$field?'selected':''}}>{{$project->title}}</option>
+        @endforeach
+    </select>
+@endsection