Hi I'm kinda new to FuelPHP and right now I'm studying some syntax on how to retrieve data using DB::query() builder and I have encountered an error using this code.
Controller:
use \Model\Welcome
class Controller_Welcome extends Controller
{
public function action_index()
{
print_r(Welcome::getuser());
}
}
Model:
namespace Model;
class Welcome extends \Model {
public static function getuser()
{
$query = DB::query("SELECT * FROM `users`");
return $query->execute();
}
}
And it keeps prompting an error saying "ErrorException [ Fatal Error ]:
Class 'Model\DB' not found" what does it mean by 'Model\DB' not found? what did I miss? or what is missing with my code?
And I already configured the database settings on the /config/development/db.php
Your help is much appreciated.
Thanks in advance.
The DB class is the in global namespace while your model is in the Model namespace so unless you import DB with a use statement you will have to specify a \ before the class name \DB::query().
If you do not do either of these then PHP will try and load the DB class from the Model namespace.
Related
I found many questions about my problem and tried (I think) all the solutions, but I can not make it work. I'm overlooking something very easy, probably.
I'm using Laravel 5. I try to implement a repository-pattern.
I have an Eloquent model '\Notos\Kind'.
Then I have this interface:
namespace Notos\Contracts;
interface Kind
{
public function findByName($name);
}
My Repository looks like this:
namespace Notos\Repository;
use Illuminate\Database\Eloquent\Model;
use Notos\Contracts\Kind as KindContract;
class Kind implements KindContract
{
protected $kind;
public function __construct(Model $kind)
{
$this->kind = $kind;
}
public function findByName($name)
{
return $this->kind->firstOrCreate(array('name' => $name));
}
}
My ServiceProvider:
namespace Notos\Providers;
use Illuminate\Support\ServiceProvider;
use Notos\Kind;
use Notos\Repository\Kind as KindRepository;
class RepoServiceProvider extends ServiceProvider
{
/**
* Register the service provider.
*
* #return void
*/
public function register()
{
$this->app->bind('Notos\Contracts\Kind', function ($app) {
return new KindRepository(new Kind);
});
}
}
And my controller that uses the repository:
namespace Notos\Http\Controllers;
use Notos\Repository\Kind as KindRepository;
class KindController extends Controller
{
protected $kind;
public function __construct(KindRepository $kind)
{
$this->kind = $kind;
}
public function find($name)
{
return $this->kind->findByName($name);
}
}
This provider is registered in config/app.php
When I try to execute the KindController#find I get this error:
BindingResolutionException in Container.php line 785:
Target [Illuminate\Database\Eloquent\Model] is not instantiable.
I can't find what I'm doing wrong.
It works perfect if I change __construct(Model $kind) to __construct(Kind $kind).
Any ideas?
Thanks
The first thing, I would advice you to add to your class names the function so for example instead of Kind for repository use KindRepository, the same for contract. Otherwise you will have 3 kinds classes (of course in different namespaces) but it will be hard to analyse the code.
The problem here is that in your KindController you try to inject KindRepository directly but in constructor you use Model. It won't work because Model is only abstract class. What you should do to make it work?
In the code:
$this->app->bind('Notos\Contracts\Kind', function ($app) {
return new KindRepository(new Kind);
});
you told Laravel that when you will use Notos\Contracts\Kind it should create KindRepository for you with Kind in constructor - look you told here about Contract, not about repository itself.
So to make it work, you should use in your controller not your repository, but your contract.
Instead of line:
use Notos\Repository\Kind as KindRepository;
you should write:
use Notos\Contracts\Kind as KindRepository;
and it should work now.
I dont know what I'm doing wrong today, I can't get a 1-N relationship to work in Laravel 4. I'm trying to describe soccer teams that have many players.
I have a "players.team_id" field. I double-checked the database, the datas are OK.
First model :
class Team extends Eloquent {
public function players() {
return $this->hasMany('Player');
}
}
Second model :
class Player extends Eloquent {
function team() {
return $this->belongsTo('Team');
}
}
In my controllers, I can use $player->team but $team->players always retunrs null.
If I try to var_dump $team->players() (I should see the relationship description), it returns an error :
Call to undefined method Illuminate\Database\Query\Builder::players()
This is what my controller looks like :
class HomeController extends BaseController {
public function showTeam($slug) {
$team = Team::where('slug','=',$slug)->first();
// this works fine
$player = Player::find(1);
var_dump($player->team);
// this works, too.
$players = Player::where('team_id','=',516)->get();
var_dump($players);
$team = Team::where('slug','=',$slug)->first();
var_dump($team->players); // returns null
var_dump($team->players()); // throws an error
return View::make('team')
->with('team', $team);
}
}
Any leads ? Thank you very much !
I found the bug thanks to Quasdunk comment.
composer dump-auto
told me that I had twice the "Team" class.
Warning: Ambiguous class resolution
I copy/pasted a model file and forgot to change the class name in it. The problem was solved after I renamed this class.
This is a beginner question, but I searched for an hour and couldn't find an answer.
I am trying to write a simple data query which I included in my HomeController
<?php
class HomeController extends BaseController {
public function showWelcome()
{
return View::make('hello');
}
}
$programs=DB::table('node')->where('type', 'Programs')->get();
$programs is undefined so I am guessing that my query didn't work but I have no idea how to debug it. I tried installing firebug and phpbug and chromphp tools but they don't seem to show anything. My apache log doesn't show anything either. Am I missing something? How do I debug this?
You can't use an expression outside of a method when using a class, instead you need to put it inside a method like:
class HomeController extends BaseController {
public function getPrograms()
{
$programs = DB::table('node')->where('type', 'Programs')->get();
// pass the $programs to the programs view for showing it
return View::make('programs')->with('programs', $programs);
}
}
So, for example, if you have a route like this:
Route::get('/programs', 'HomeController#getPrograms');
Then you may use an URL like: example.com/programs to invoke the getPrograms method in the class HomeController.
Probably this answer doesn't help much but I think you should learn the basics (PHP Manual) first so read books and articles online and check the Laravel website to read the documentation.
You can pass the result of that query to the view like so:
class HomeController extends BaseController {
public function showWelcome()
{
$programs = DB::table('node')->where('type', 'Programs')->get();
return View::make('hello', array('programs' => $programs));
}
}
And in your view you will have access to the $programs variable.
I don't know If i'm missing the point, but can't you use the "dd($programs)" to check what is or not is inside the variable?
I am newbee for Amfphp+codeignitor, I am unable to see the answer for the question amfphp 2.2, index.php gives fatal error?, Or it is not clear to me.
I followed the process mentioned here
http://www.nunomira.com/blog/2012/03/codeigniter-2-0-3-with-amfphp-2-0/
I am getting the same error - Fatal error: Cannot use object of type stdClass as array in D:\vhosts\site\application\libraries\Amfphp\Plugins\AmfphpMonitor\AmfphpMonitor.php on line 167
No Idea where i am doing the mistake.
http://localdomain.com/index.php/amf/gateway is the url i am trying.
How to rectify? what is the problem? if the problem is resolved, will i look service browser?
Experts please guide me on this...
Here is the code
Folder Structure
-controllers
-amf
-services
-Testservice.php
-Gateway.php
-libraries
-Amfphp (Amfphp folder)
Gateway.php
<?php
require_once APPPATH . "/libraries/Amfphp/ClassLoader.php";
class Gateway extends CI_Controller
{
function __construct()
{
parent::__construct();
}
function index()
{
$config = new Amfphp_Core_Config();//do something with config object here
$config->serviceFolders = array(dirname(__FILE__) . "/services/");
$gateway = Amfphp_Core_HttpRequestGatewayFactory::createGateway($config);
$gateway->service();
$gateway->output();
}
}
Testservice.php
<?php
class Testservice extends CI_Controller {
public function getMessage()
{
return array("param1" => "param1");
}
}
Thanks
someone pointed out a similar problem and a fix has been made but not released yet. Could you try replacing your AmfphpMonitor.php code with this one?
https://github.com/silexlabs/amfphp-2.0/blob/master/Amfphp/Plugins/AmfphpMonitor/AmfphpMonitor.php
The problem:
class PostRepostioryInterface not found for line 4 in PostController.php
or in tinkering with the namespace I've even got class
App\Models\Interfaces\PostRepositoryInterface not found
The questions: How to register a namespace in laravel 4? What do I need to do to get L4 to recognise the classes/interfaces at this namespace?
Larave 3 had a $namespaces static object in ClassLoader where you could add namespaces by
Autoloader::namespaces(array(
'App\Models\Interfaces' => path('app').'models/interfaces',
));
I'm not sure if I have that right for laravel 3 but either way, AutoLoader doesn't exist in Laravel 4 and ClassLoader exists but the method namespaces doesn't exist in ClassLoader in Laravel 4.
I've looked at this but it doesn't seem to work without registering the namespace somehow.
Using namespaces in Laravel 4
Example structure:
app/models/interfaces
PostRepostitoryInterface.php
app/models/repositories
EloquentPostRepository.php
namespaces:
App\Models\Repositories;
App\Models\Interfaces;
the files:
PostRepositoryInterface.php
<?php namespace App\Models\Interfaces;
interface PostRepositoryInterface {
public function all();
public function find($id);
public function store($data);
}
EloquentPostRepository.php
<?php namespace App\Models\Repositories;
use App\Models\Interfaces\PostRepositoryInterface;
class EloquentPostRepository implements PostRepositoryInterface {
public function all()
{
return Post::all();
}
public function find($id)
{
return Post::find($id);
}
public function store($data)
{
return Post::save($data);
}
}
PostController.php
<?php
use App\Models\Interfaces\PostRepositoryInterface;
class PostsController extends BaseController {
public function __construct( PostRepositoryInterface $posts )
{
$this->posts = $posts;
}
Thanks
You probably forgot to do composer dump-autoload. This updates the list of classes Laravel autoloads.
You can read more on composer documentation.
On the laravel irc channel I found out the namespaces should work in L4 without a need for registering them anywhere. This is because the composer dump-autoload adds them to the composer/autoload file for me. So that was not an issue.
The issue turned out to be a typo apparently(I can't find it in the code above but after going through every line copy/pasting the class names and namespaces something changed), and also somehow in my real code I left out the 'use' statement for EloquentPostRepository.php
use App\Models\Interfaces\PostRepositoryInterface;
Now I've hit another wall trying to use the namespaced interface with ioc and the controller constructor (target interface App\Models\Interfaces\PostRepositoryInterface is not instantiable) but I guess that should be a different question.