Tag: web

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Getting data from API works in Postman but not working in localhost

If you are getting the data from an external API when using Postman, but when you try the code provided by Postman in your local host you get no data. A reason for that could be the SSL, first, try to install SSL for your local hosting server. Usually, OpenSSL will do the trick. Here is a link to a step-by-step of how to install SLL over WAMP.

https://infyom.com/blog/how-to-enable-localhost-https-ssl-on-wamp-server

If you still can’t connect to the external API, the reason could be an issue with the SSL certificate validation. (after all, this is a self-signed certification). This error usually occurs when the certificate authority (CA) that issued the SSL certificate used by the server you’re trying to connect to is not recognized or trusted by your system.

If you are using cURL, to resolve this issue, you have a few options:

1- Update your CA certificates: Your system’s CA certificate bundle might be outdated. You can try updating it to include the latest CA certificates. The location of the CA certificate bundle can vary depending on your operating system and cURL installation. In some cases, it may be located at /etc/ssl/certs/ca-certificates.crt.

2-Specify the CA certificate bundle path explicitly: If you have access to the CA certificate bundle, you can specify its path explicitly using the –cacert option with cURL. For example:

curl --cacert /path/to/ca-certificates.crt https://example.com

3- Ignore certificate validation (not recommended): If you’re in a development or testing environment and certificate validation is not crucial, you can bypass the certificate validation check using the -k or –insecure option with cURL. However, this approach is not recommended in production environments because it exposes you to potential security risks. Example:

curl -k https://example.com

If you are using PHP, here is an example

<?php

// Create a cURL handle
$ch = curl_init();

// Set the URL
curl_setopt($ch, CURLOPT_URL, "https://example.com");

// Disable SSL certificate verification
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

// Execute the request
$response = curl_exec($ch);

// Check for errors
if ($response === false) {
    $error = curl_error($ch);
    echo "cURL error: " . $error;
}

// Close the cURL handle
curl_close($ch);
?>
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Facing a hard time installing Gulp?

If you are trying to install Gulp and you always get errors related to node-sass, here is a small tip that could fix it for you

Simply uninstall node-sass and install dart-sass

npm uninstall gulp-sass
npm install gulp-dart-sass

Then, update your Gulpfile.js to use gulp-dart-sass instead of gulp-sass for compiling Sass.

By following these steps, you should be able to resolve the compatibility issue with Node Sass and successfully run gulp watch without encountering the “Node Sass does not yet support your current environment” error.

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How to solve “Attempt to read property of Null”

Sometimes in Laravel, when you try to show a property of an object, for example :

{{ $user->name }}

you get an error like this :

Attempt to read property on null

which simply means that the object itself “user” is null and you can’t get a name property of Null. To solve this, you need to make sure that the user object is there first and then get the name but that will be a lot of coding and if statement, while there is a one-character solution to this, it is called a Nullsafe Operator and it is in PHP 8
the code will look like this

{{ $user?->name }}

you can use the same method in a chain of objects or even methods

$country = $session?->user?->getAddress()?->country;

There are other options that you can check in this article

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Nothing to migrate in Laravel

If you are trying to migrate a single class you will do something like this

php artisan migrate --path = path_to_migration_file

if you get something like :

Nothing to migrate

and you are sure the file is there, then you can try to write the command like this

php artisan migrate --path="database/migrations/2022_11_04_1235_create_table.php"
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Log Laravel

You can easily log your data in Larave, all you have to do is to use Log, and then log whatever you want, here is an example

<?php
 
namespace App\Http\Controllers;
 
use Log;
use App\User;
use App\Http\Controllers\Controller;
 
class UserController extends Controller
{
    /**
     * Show the profile for the given user.
     *
     * @param  int  $id
     * @return Response
     */
    public function showProfile($id)
    {
        Log::info('User ID: '.$id);
 
        return view('user.profile', ['user' => User::findOrFail($id)]);
    }
}

You can also use an array of contextual data 

Log::info('User failed to login.', ['id' => $user->id]);

Laravel provides 8 levels of logging

Log::emergency($error);
Log::alert($error);
Log::critical($error);
Log::error($error);
Log::warning($error);
Log::notice($error);
Log::info($error);
Log::debug($error);

You can view the log file at: storage/laravel.log but you may find a huge file with thousands of line as this is the main file where all the logs are saved.

If you want to create your own log file, you will need to add a new channel in the config/logging.php

'channels' => [
        'myLog' => [
                    'driver' => 'single',
                    'path' => storage_path('logs/myLog.log'),
                    'level' => 'info',
                ],

where myLog.log is the file name you want to save your logs in

To write to your custom log file, you have to specify the channel you just created

Log::channel('myLog')->info('This is testing for my log file.');

ps. Don’t forget to empty the config cache for the updates to be active

from your terminal, you write: php artisan cache:clear

Finally, when you open myLog.log file, you will see something like this:

[2022-08-25 09:13:20] local.INFO: This is testing for my log file.

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How to use withSum() with where condition

You can use withSum in query with where condition, here is an example:

If you want to list all Projects with the sum of all invoices that were issued this year:

$projects = Project::select('id', 'name', 'created_at')
            ->withSum(
                 ['invoices as prev_invoices' => function($query) {
                     $query->whereYear('invoices.issue_date', date('Y'));
                }], 'amount' 
             )
            ->get();
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How to set a function in a model as an attribute

If you have a model with a function that you want to use it as an attribute, all you have to do is to use protected $appends in the Model class

For example, you have a Project class with a function that gets the sum of all invoices for that project 

class Project extends Model
{
protected $appends = ['prev_invoices'];
....
public function getPrevInvoicesAttribute()       
    {
        $sum = Invoice::where('project_id', $this->id)
            
            ->sum('amount');
        return $sum;
    }

Note that the function name must be formatted like that: “get” at the beginning, “Attribute” at the end, and the name to be CamelCase.

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Laravel / PHP SOS

When your code is not working right and you have no idea what is wrong:

  • What is the language ?
    Yes, you heard me right, sometimes when you are writing javascript code inside a laravel/php page ..things could get mixed up
  • Remove the cache
    There are lots of cache types you need to clear depending on what you have changed, here are some commands to use:
    • php artisan config:cache
    • php artisan route:cache
    • php artisan view:cache
    • php artisan cache:clear
    • php artisan clear-compiled
    • composer dump-autoload
    • php artisan debugbar:clear
    • php artisan optimize
  • What is the type of the variables ?
    When you want to compare 2 variables and you are sure the result should be true, check the type of the variables, sometimes you could find that you are comparing a variable to an object or collection
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How to send a set of customized emails using Gmail and Google sheets without any third-party tools

If you have a list of email addresses and want to send a customized email for each one you can use Google Apps Script to get emails and data from Google sheet and use a draft email in Gmail. Data in Google sheet can be used as variables, ie. {{email}} , {{user name}}, {{password}}

Here is a link with a ready-made code to use:

https://developers.google.com/apps-script/samples/automations/mail-merge