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PostgreSQL Model Insert Function Issue
#1

(This post was last modified: 01-28-2022, 04:56 AM by Corda.)

Dear fellow CodeIgniter Developer,
I found an issue with Codeigniter 4 (Version: 4.1.8) Model Insert Function with PostgreSQL.
I tried to search in google and did not find someone who has the same issue, so I post this new topic here.
I usually use MySQL with CodeIgniter 4 and the Model feature is work perfectly.
I must build an app using PostgreSQL and I tried to use the Model feature too with this database. Because the Model feature is perfect to manage the data.

I am using:
PHP 7.4.27
Apache 2.4.48
PostgreSQL 14.1
CodeIgniter 4.1.8

When I tried to insert data using Model, this error always appears:

Code:
<br />
<b>Fatal error</b>:  Uncaught CodeIgniter\Format\Exceptions\FormatException: Failed to parse json string, error: &quot;Type is not supported&quot;. in /Users/macuser/Sites/postgre-api/system/Format/JSONFormatter.php: 41
Stack trace:
#0 /Users/macuser/Sites/postgre-api/system/Format/JSONFormatter.php(41): CodeIgniter\Format\Exceptions\FormatException: :forInvalidJSON('Type is not sup...')
#1 /Users/macuser/Sites/postgre-api/system/API/ResponseTrait.php(341): CodeIgniter\Format\JSONFormatter-&gt;format(Array)
#2 /Users/macuser/Sites/postgre-api/system/API/ResponseTrait.php(99): CodeIgniter\Debug\Exceptions-&gt;format(Array)
#3 /Users/macuser/Sites/postgre-api/system/Debug/Exceptions.php(115): CodeIgniter\Debug\Exceptions-&gt;respond(Array,
500)
#4 [internal function
]: CodeIgniter\Debug\Exceptions-&gt;exceptionHandler(Object(ErrorException))
#5 {main
}
  thrown in <b>/Users/macuser/Sites/postgre-api/system/Format/JSONFormatter.php</b> on line <b>41</b><br />
{
    "title": "ErrorException",
    "type": "ErrorException",
    "code": 500,
    "message": "Uncaught CodeIgniter\\Format\\Exceptions\\FormatException: Failed to parse json string, error: \"Type is not supported\". in /Users/macuser/Sites/postgre-api/system/Format/JSONFormatter.php:41\nStack trace:\n#0 /Users/macuser/Sites/postgre-api/system/Format/JSONFormatter.php(41): CodeIgniter\\Format\\Exceptions\\FormatException::forInvalidJSON('Type is not sup...')\n#1 /Users/macuser/Sites/postgre-api/system/API/ResponseTrait.php(341): CodeIgniter\\Format\\JSONFormatter->format(Array)\n#2 /Users/macuser/Sites/postgre-api/system/API/ResponseTrait.php(99): CodeIgniter\\Debug\\Exceptions->format(Array)\n#3 /Users/macuser/Sites/postgre-api/system/Debug/Exceptions.php(115): CodeIgniter\\Debug\\Exceptions->respond(Array, 500)\n#4 [internal function]: CodeIgniter\\Debug\\Exceptions->exceptionHandler(Object(ErrorException))\n#5 {main}\n  thrown",
    "file": "/Users/macuser/Sites/postgre-api/system/Format/JSONFormatter.php",
    "line": 41,
    "trace": [
        {
            "function": "shutdownHandler",
            "class": "CodeIgniter\\Debug\\Exceptions",
            "type": "->",
            "args": []
        }
    ]
}


The data was inserted, but the application always return this error. So I think this is not good at all.
When I tried to use query builder without a model in Controller, the insert function works well. The data was inserted and the application did not return this error. It always returns an error if using the Model insert function.
I tried to use the Model update and Model delete function and it works well. No error was returned. So I got confused why only the Model insert function returns the error.

After doing some research about the error, I found that an error in 
Code:
#1 /Users/macuser/Sites/postgre-api/system/API/ResponseTrait.php(341): CodeIgniter\Format\JSONFormatter-&gt;format(Array)

I tried to put a var_dump in here:
PHP Code:
if ($mime !== 'application/json') {
            // Recursively convert objects into associative arrays
            // Conversion not required for JSONFormatter
            $data json_decode(json_encode($data), true);
        }
        var_dump($data);
        return $this->formatter->format($data); 


Then I found this error:
Code:
[
  "title"
]=>
string(14) "ErrorException"
[
  "type"
]=>
string(14) "ErrorException"
[
  "code"
]=>
int(500)
[
  "message"
]=>
string(76) "pg_query(): Query failed: ERROR:  lastval is not yet defined in this session"
[
  "file"
]=>
string(77) "/Users/macuser/Sites/postgre-api/system/Database/postgre/Connection.php"
[
  "line"
]=>
int(135)


I tried to search in google and I found that the Primary Key must be SERIAL type.
I tried to rebuild the table with serial and enable the auto-increment, but it generates an error because I must put an integer into the insert function for the Primary Key column.
Because of that, I tried to insert with a manual increment for the Primary Key column and it still generates the lastval error. The data was inserted into the database, but it generates lastval error.
So I conclude that this error is not about the SERIAL type in PostgreSQL. Because either SERIAL or VARCHAR type for Primary Key still generate the same error.

Am I doing something wrong here?

Here are my codes:
BaseController:
PHP Code:
<?php

namespace App\Controllers;

use 
CodeIgniter\Controller;
use 
CodeIgniter\HTTP\CLIRequest;
use 
CodeIgniter\HTTP\IncomingRequest;
use 
CodeIgniter\HTTP\RequestInterface;
use 
CodeIgniter\HTTP\ResponseInterface;
use 
Psr\Log\LoggerInterface;
use 
CodeIgniter\API\ResponseTrait;

/**
 * Class BaseController
 *
 * BaseController provides a convenient place for loading components
 * and performing functions that are needed by all your controllers.
 * Extend this class in any new controllers:
 *    class Home extends BaseController
 *
 * For security be sure to declare any new methods as protected or private.
 */
class BaseController extends Controller
{
  use ResponseTrait;
    /**
    * Instance of the main Request object.
    *
    * @var CLIRequest|IncomingRequest
    */
    protected $request;

    /**
    * An array of helpers to be loaded automatically upon
    * class instantiation. These helpers will be available
    * to all other controllers that extend BaseController.
    *
    * @var array
    */
    protected $helpers = [];

  protected $validation '';

  function __construct () {
    $this->request service('request');
    $this->validation = \Config\Services::validation();
  }

    /**
    * Constructor.
    */
    public function initController(RequestInterface $requestResponseInterface $responseLoggerInterface $logger)
    {
        // Do Not Edit This Line
        parent::initController($request$response$logger);

        // Preload any models, libraries, etc, here.

        // E.g.: $this->session = \Config\Services::session();
    }

Home.php Controller:
PHP Code:
<?php
namespace App\Controllers\Article;

use 
App\Controllers\BaseController;
use 
App\Models\Article\ArticleModel;
use 
DateTime;

class 
Home extends BaseController {
  private $articleModel;
  function __construct () {
    parent::__construct();
    $this->articleModel = new ArticleModel();
  }

  function index () {
    var_dump($this->articleModel->getData('data'));
  }

  function detail () {
    var_dump($this->articleModel->getData('detailData', ['id' => 'A61f3cb258b852']));
  }

  function insert () {
    $objDateTime = new DateTime();
    if ($this->articleModel->insertData('insertData', [
      'title' => 'Article',
      'content' => '<h1>Hello Article</h1>',
      'publishDate' => $objDateTime->format('Y-m-d'),
      'order' => 0,
      'show' => true,
      'archive' => false
    
]) === false) {
      return $this->fail($this->articleModel->generateErrorData());
    } else {
      return $this->respondCreated([], 'Article Insert Success');
    }
  }

  function update () {
    $objDateTime = new DateTime();
    if ($this->articleModel->updateData('updateData', [
      'id' => 'A61f3cb258b852',
      'title' => 'Article Updated',
      'content' => '<h1>Hello Article Updated</h1>',
      'publishDate' => $objDateTime->format('Y-m-d'),
      'show' => false
    
]) === false) {
      return $this->fail($this->articleModel->generateErrorData());
    } else {
      return $this->respondUpdated([], 'Article Update Success');
    }
  }

  function delete () {
    $this->articleModel->deleteData('deleteData', [
      'id' => 'A61f3cb258b852'
    ]);
  }
}
?>
BaseModel.php Model:
PHP Code:
<?php
namespace App\Models;

use 
CodeIgniter\Model;

class 
BaseModel extends Model {
  protected $useTimestamps true;
  protected $createdField  'created_at';
  protected $updatedField  'updated_at';
  protected $deletedField  'deleted_at';

  protected $skipValidation false;

  protected $tableAlias = [];

  protected $imagePath '';
  protected $uploadImageConfig = [
    'imageQuality' => 90,
    'imageWidth' => 1024,
    'imageHeight' => 0
  
];

  function generateErrorData () {
    $errorsData $this->errors();
    $result = [];

    if (isset($errorsData) && $errorsData !== '' && count($errorsData) > 0) {
      foreach ($errorsData as $key => $errorsDataRow):
        $keyResult array_search($key$this->tableAlias);
        if ($keyResult !== false) {
          $result[$keyResult] = $errorsDataRow;
        }
      endforeach;
    }

    return $result;
  }

  function getImagePath () {
    return $this->imagePath;
  }

  function getUploadImageConfig () {
    return $this->uploadImageConfig;
  }

  function _convertNullToEmptyString ($data) {
    if (is_array($data)) {
      foreach ($data as $key => $dataRow):
        if ($dataRow === null) {
          $data[$key] = '';
        }
      endforeach;
    }
    return $data;
  }

ArticleModel.php Model:
PHP Code:
<?php
namespace App\Models\Article;

use 
App\Models\BaseModel;
use 
DateTime;

class 
ArticleModel extends BaseModel {
  protected $table 'article_ms';
  protected $primaryKey 'article_id';
  protected $returnType 'App\Entities\Article\Article';
  protected $useSoftDeletes false;

  protected $allowedFields = [
    'article_id',
    'article_title',
    'article_content',
    'article_publish_date',
    'article_order',
    'article_show',
    'article_archive'
  ];

  protected $validationRules = [
    'article_id' => [
      'label' => 'ID',
      'rules' => 'required'
    ],
    'article_title' => [
      'label' => 'title',
      'rules' => 'required'
    ],
    'article_content' => [
      'label' => 'Content',
      'rules' => 'required'
    ],
    'article_publish_date' => [
      'label' => 'Publish Date',
      'rules' => 'required'
    ]
  ];

  protected $tableAlias = [
    'title' => 'article_title',
    'content' => 'article_content',
    'publishDate' => 'article_publish_date',
    'order' => 'article_order',
    'show' => 'article_show',
    'archive' => 'article_archive'
  ];

  protected $imagePath './img/article/';

  function __construct () {
    parent::__construct();
  }

  function getData ($flag ''$data = [], $convertLabel '') {
    $result = [];
    switch ($flag) {
      case 'data':
        $result $this->findAll();
        break;
      case 'detailData':
        $result $this->where('article_id'$data['id'])->first();
        break;
    }
    return $this->convertData($convertLabel$result);
  }

  function convertData ($flag ''$data) {
    $result = [];
    switch ($flag) {
      default:
        $result $data;
        break;
    }

    return $result;
  }

  function insertData ($flag ''$data) {
    switch ($flag) {
      case 'insertData':
        return $this->insert(new \App\Entities\Article\Article([
          'article_id' => uniqid('A'),
          'article_title' => $data['title'],
          'article_content' => $data['content'],
          'article_publish_date' => $data['publishDate'],
          'article_order' => $data['order'],
          'article_show' => $data['show'],
          'article_archive' => $data['archive']
        ]));
        break;
    }
  }

  function updateData ($flag ''$data) {
    switch ($flag) {
      case 'updateData':
        return $this->update($data['id'], new \App\Entities\Article\Article([
          'article_title' => $data['title'],
          'article_content' => $data['content'],
          'article_publish_date' => $data['publishDate'],
          'article_show' => $data['show']
        ]));
        break;
    }
  }

  function deleteData ($flag ''$data) {
    switch ($flag) {
      case 'deleteData':
        $this->delete($data['id']);
        break;
    }
  }
}
?>
Article Migration File:
PHP Code:
<?php

namespace App\Database\Migrations;

use 
CodeIgniter\Database\Migration;

class 
Article extends Migration
{
  public function up()
  {
    // article_ms
    $this->forge->addField([
      'article_id' => [
        'type' => 'VARCHAR',
        'constraint' => 255
      
],
      'article_title' => [
        'type' => 'VARCHAR',
        'constraint' => 255
      
],
      'article_content' => [
        'type' => 'TEXT'
      ],
      'article_publish_date' => [
        'type' => 'DATE'
      ],
      'article_order' => [
        'type' => 'BIGINT'
      ],
      'article_show' => [
        'type' => 'BOOLEAN'
      ],
      'article_archive' => [
        'type' => 'BOOLEAN'
      ],
      'created_at' => [
        'type' => 'DATETIME',
        'null' => true
      
],
      'updated_at' => [
        'type' => 'DATETIME',
        'null' => true
      
],
      'deleted_at' => [
        'type' => 'DATETIME',
        'null' => true
      
]
    ]);
    $this->forge->addKey('article_id'true);
    $this->forge->createTable('article_ms');
  }

  public function down()
  {
    // article_ms
    $this->forge->dropTable('article_ms');
  }

I need help with this issue. Hope this topic will become a good discussion and can solve the issue.
Reply
#2

CI 4.1.8
PgSQL 12.2
SERIAL works.
If your table does not use autoincrement then set the protected property useAutoIncrement to false.
Reply
#3

(This post was last modified: 01-29-2022, 05:18 AM by Corda.)

(01-28-2022, 03:01 PM)iRedds Wrote: CI 4.1.8
PgSQL 12.2
SERIAL works.
If your table does not use autoincrement then set the protected property useAutoIncrement to false.

WOW!!!!

You are the BEST!

Thank you so much for useAutoIncrement solutions.
I got it now.
Because I use VARCHAR for the Primary Key, the CodeIgniter automatically runs the useAutoIncrement if I don't set it as false.
If I use BIGINT or BIGSERIAL for the Primary Key, the useAutoIncrement must be true.
If I use VARCHAR for the Primary Key, the useAutoIncrement must be false.
This works well if I set the useAutoIncrement correctly.

Thank you so much for the solutions. You are the BEST!!!
Reply




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