Laravel

Question 1

What are route requests?
Route :: get(‘/’, function () {
return view(‘welcome’);
});

Answer 1

Declaring a route that listens for a get request and a get request is just visiting a URL in the browser. The forward slash in the code above means the request is for the Home page. If we wanted to view the about page, we would add the appropriate directory, example ‘/about’

Question 2

What is blade.php?

Answer 2

Blade is Laravel’s templating engine, a layer on top of php that offers a few useful bells and whistles.

Question 3

How are routes and views related?

Answer 3

You can visit the routes file, you can declare routes, and that route can return what we refer to as a view. A view is the markup in the template for what the user views.

Question 4

What is the Components directory?

Answer 4

Any kind of reusable block that could be referenced in multiple places around your application - a task, a menu, a drop down item, a layout file, a card, a message, an avatar etc.

Question 4

What is a layout file?

Answer 4

A layout is a component. When we create a layout file within the Components directory, it’s a signal to Laravel that it should be treated as a component.

Question 5

How do you reference a components file such as the layout file?

Answer 5

We always start components with x- to make sure that they are unique and they don’t interfere with existing html tags, and then we reference the name of the component. Write it just like a simple html tag.

<x-layout>
</x-layout>

Question 6

What is the variable name called slot?

Answer 6

$slot

Question 7

What are master files?

Answer 7

We’ve created a new component for a layout file. Some refer to these as Master files. The layout file is almost like the structure for your application. head tag, any scripts or stylesheets you need to import, nav, footer. And then the main section will always be unique for each page so we will define the structure and then we will slot in any page specific markup.

Question 8

How does blade replace variables like slots <?php echo $slot ?> ?

Answer 8

{{ $slot }}

Question 9

How does blade relate to vanilla php?

Answer 9

Behind the scenes, your blade code is being compiled to vanilla php.

Question 10

What are these called? {{ }}

Answer 10

A shortcut blade uses to compile it to a php echo.

Question 11

What is Tailwind CSS?

Answer 11

A CSS utility framework - you can declare classes that refer to specific CSS properties.

Question 12

What is PHP?

Answer 12

Hypertext Preprocessor. A popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic. PHP is an open-source, server-side programming language that can be used to create websites, applications, customer relationship management systems and more. It is a widely-used general-purpose language that can be embedded into HTML.

Question 13

What’s a prop?

Answer 13

A prop is a custom attribute in php

Question 14

What levels of colors are used in Tailwind?

Answer 14

Level 100 is the lightest, Level 900 is the darkest

Question 15

What is a URI?

Answer 15

Uniform Resource Identifier - is a sequence of characters that distinguishes one resource from another

Question 16

What are blade directives?

Answer 16

They start with the @ symbol. Short hand that compile down to vanilla php echo statements or function calls.

Question 17

What do braces represent in Laravel?

Answer 17

Braces indicate that whatever is wrapped inside is a wildcard - it contains it to pass to the function so we can use it however we want.

Question 18

What’s a dd function?

Answer 18

Dump and die. Dump the id and then kill the execution.

Question 19

What is an Arr class in Laravel?

Answer 19

An array

Question 20

What does MVC mean?

Answer 20

MVC stands for Model-View-Controller. It’s not unique to Laravel. Other frameworks like CodeIgniter, Ruby on Rails, Django, Backbone.js, Ember, and Spring adhere to it. It’s a system for how to go about constructing applications and how each piece of the puzzle can and should communicate with each other. Views are the presentation layer. Controllers are defining a route and having a function to handle the route. Your model can represent your data persistence but also the business logic tier of your application.

Question 21

What is a namespace?

Answer 21

Simply, a namespace is a way to organize your code so the directory references the specific file you’re working in and not another with the same name in a different folder.

Question 22

What is psr-4 in the composer.json file?

Answer 22

It’s a standard and convention for autoloading files and we can define our mapping there and Laravel does that for you automatically.

Question 23

What is your .env file?

Answer 23

This contains all your various preferences, passwords, and strings for your projects including the database you want to use, is your application currently in a debug state – if you’re working locally then this will be true, if you push it live, then that value will be set to false. If you’re connecting to any APIs and you can include the API keys here. This stores any potentially sensitive info that prevents it from being shared in github and such because this file is included in .gitignore.

Question 24

What is the output from running php artisan in your Herd/example folder?

Answer 24

You will see a list of commands sorted according to a namespace.

Question 25

What are migrations?

Answer 25

We use a migration class to define the initial structure of that table, we ran the migration by running php artisan migrate from the command line. Fetch the data from the database and then render it in the View.

Question 26

When can you run the migrate:refresh command?

Answer 26

Never run migrate:refresh in a production site because it will erase everything in the database.

Question 27

What is SQL?

Answer 27

Structured Query Language. Is the gold standard language for communicating with Relational Database Management Systems (RDMS). Databases like MySQL, Postgress, Microsoft Sql Server, Oracle - they are all based on SQL with their own little variations. It’s a collection of clauses that make up an SQL statement.

Question 28

What is SQLite?

Answer 28

SQLite is a software library that provides a relational database management system (RDBMS) based on SQL. It’s not universally applicable but it’s a small database engine that’s easy to embed into applications - used as an in-memory database. It’s a good light-weight utility database for prototyping things. It’s just a flat file, read-only storage, embedded situations, mobile applications. It’s not good for multiple writers, not good for extremely large databases (like amazon or google - multi million rows).

Question 29

What is Eloquent in Laravel?

Answer 29

It is an ORM - Object Relational Mapper. An ORM maps an object in your database like a table row to an object in your php code. This is Laravel’s active record implementation. Convert your php to an eloquent model so that it can pull the info from the database!

We’re no longer hard-coding arrays, it’s just pulling from the database! Use eloquent to insert and delete records from the database!

Question 29

What is the factories category used for?

Answer 29

Use a model factory to quickly scaffold example data.

Question 30

What does the command php artisan tinker do?

Answer 30

Your command line playground for your laravel app. Does it work the way I expect it to? Manipulate variables to see if it returns what you expect!

Question 30

How do you convert your php to an eloquent model?

Answer 30

extends Model and use Illuminate\Database\Eloquent\Model

Question 30

Rule number 1 when dealing with users sending in form requests? How do you prevent them from overwriting items?

Answer 30

You have to assume they are malicious and trying to do something wrong. Add a protected $fillable property – this represents all of the values that are allowed to be mass assigned.

Question 31

What is IDE?

Answer 31

Integrated development environment

Question 32

What are Model Factories?

Answer 32

They are excellent for scaffolding data for your local environment and for the purposed of preparing a test.

Question 33

Simple explanation of Database Relationships in the jobs listing project example?

Answer 33

We set it up so that a job listing belongs to a corresponding employer.

Question 34

If we have the job object, how we fetch the name of the employer that gave us the listing?

Question 35

Eloquent Relationships

Question 36

What is lazy loading?

Answer 36

Lazy loading refers to the delay of an SQL query until the last possible moment.

Question 37

What is an Eloquent Collection?

Answer 37

An array on steroids haha.

Question 38

How do we access the first job?

Answer 38

Interact with it like an array
$employer->jobs[0]
or a collection
$employer->jobs->first()

Question 39

What’s the relationship between a Post and a Comment in a blog?

Answer 39

A Post can have many Comments so you use the hasMany() method.

Question 40

What’s the relationship between a Comment and a Post in a blog?

Answer 40

A Comment belongs to a Post so you use belongsTo() method.

Question 41

What’s the relationship between a Post and a User in a blog?

Answer 41

A Post belongs to a User so you use belongsTo()

Question 42

What’s the relationship between a Post and Tags in a blog?

Answer 42

A Post can have many Tags so you use hasMany() method. Actually no lol. Go to Day 12 Laravel for the answer haha