Laravel Relationships Cheat Sheet



Defining Relationships

Lets quickly go over on how to define a relationship again. They are defined as functions in the appropriate model. For example:

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In this course we will learn Laravel Eloquent Cheatsheet: everything you need to know,How to order a Laravel has Many relationship?,A list of operators on Eloquents where method,How to provide a default model object for relationships?,How to prevent Eloquent from adding createdat or updatedat timestamps?,How to undelete a soft deleted Eloquent row?,How to generate an array for a dropdown. Laravel 5 Cheat Sheet. GitHub Gist: instantly share code, notes, and snippets. Laravel Cheat Sheet is a cheat sheet for creating web apps with the Laravel framework using the PHP language. Laravel is a free, open-source PHP web framework, created by Taylor Otwell and intended for the development of web applications following the model–view–controller (MVC) architectural pattern and based on Symfony.

A relationship can be resolved by calling the method on the instance of the model by running $user->posts or $user->posts(). Keep in mind that both of these methods return a different result. Calling the relationship as a property will return a collection of models. Calling it as method will return an instance of the corresponding relation object. This can be used whenever you want to for example add a where constraint to the query that retrieves the relational data or it can be used to associate data with each other. In every example also specifies which holds the ID (or foreign key). The model that holds the ID normally need to use the belongsTo method (reverse relationship). For any of the information of the parameter i’ll link to the appropriate section in the Laravel documentation.

One To One

In the following example the Phone model holds the User ID.

Relationship declaration

User.php

A Phone can be associated to User using:

Reverse relationship declaration

Phone.phpLaravel Relationships Cheat Sheet

A User can be associated to Phone using:

Laravel Eloquent: One to One

I often have to quickly set up an AWS Lightsail instance and deploy a Laravel project to it. The process is pretty straightforward, but still, I usually forget where to find some files or which commands exactly to execute.

Here is a complete cheat sheet for setting up an AWS Lightsail Instance, deploying Laravel to it, and setting up the domain and SSL certificate.

I will assume that you have already created an Instance using LAMP as an image, created a public IP address, and attached it.

1. Update the instance

2. Install NPM

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3. Prepare the folder for your Laravel project:

4. Get the files of your laravel project.

In this example, I am using Git.

5. Install Composer and NPM dependencies

6. Set up proper files permissions

7. Get your application password

8. Create a MySQL Database and user

I will assume you are using MySQL 8, as shipped with the default LAMP image.

In case you want to be able to connect to MySQL from outside your Lightsail instance, you need to do the following steps:

  1. Open the port 3306 on the Lightsail Firewall
  2. In the file /opt/bitnami/mysql/my.cnf, comment out the line that starts with “bind-address”
  3. Restart MySQL with sudo /opt/bitnami/ctlscript.sh restart mysql

9. Set up your .env

Go back to your project folder

Copy the user and password, making sure you use ‘localhost' on DB_HOST:

Generate the key:

And finally, run the migration:

10. Set up the Virtual Host

Create the /opt/bitnami/apache2/conf/vhosts/<YOUR-APP-FOLDER-NAME>-vhost.conf and put this onto it:

Do the same now with /opt/bitnami/apache2/conf/vhosts/<YOUR-APP-FOLDER-NAME>-https-vhost.conf:

And restart Apache

By now, your Laravel project should be working if you browse to the public IP address of your instance.

11. Use a domain

Point the domain or subdomain you want to use to your instance’s public IP and change the APP_URL of the Laravel’s .env file.

By now, your Laravel project should be working if you browse to the domain you chose but without SSL certificate.

12. Generate an SSL certificate.

I will just copy here the needed commands based on this article: Tutorial: Using Let’s Encrypt SSL certificates with your LAMP instance in Amazon Lightsail

Now you will have to add one or two TXT entries to your domain. Make sure each TXT entries are already visible before continuing by using this tool: https://mxtoolbox.com/TXTLookup.aspx.

If you are not using CloudFront to configure the redirection from HTTP to HTTPS as I usually do, read the section about configuring this redirection on the article I linked before.

Laravel Relationships Cheat Sheet

Restart Apache, and you should be ready to go.

Laravel Relationships Cheat Sheet Printable

Matlab r2018a crack. Finally, do not forget to harden your server if you will use it on production!

Laravel Relationships Cheat Sheet Pdf

Updated: 22.10.2020

–Sources:

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