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![Organizing your AdonisJS Logic](/img/1/organizing-business-logic-operations_1721419785966.jpeg?w=650)
Three Approaches for Organizing your AdonisJS Business Logic Operations
In this lesson, we'll dive deep into three different ways we can organize our code; fat controllers, services, and actions. We'll also discuss circular dependencies, static and non-static service methods, and dependency injection.
![Video preview](https://videos.adocasts.com/5b82ed35-5526-4dba-b8bd-894fae08a21e/preview.webp)
![Thank You for Watching](/img/1/thank-you-for-watching_1719604958174.jpeg?w=650)
Thank You for Watching!
A quick thank you to all those who watched! If you have feedback, please let us know down in the comments.
![Video preview](https://videos.adocasts.com/cc0ff4b4-0df3-42e0-afa4-54b60700004f/preview.webp)
![Allowing Admins to Delete Movies](/img/1/allowing-admins-to-delete-movies-and-their-relationships_1719604792290.jpeg?w=650)
Allowing Admins to Delete Movies and their Relationships
In this lesson, we'll learn how we can safely delete movies and their relationships. We'll discuss how we need to consider foreign key constraints, and what to do when our deletes aren't set to cascade.
![Video preview](https://videos.adocasts.com/381d5a01-9b89-40ce-84fc-63ce516ce179/preview.webp)
![Managed Transactions and Syncing Movie Cast Members](/img/1/managed-transactions-and-syncing-cast-members_1719352476784.jpeg?w=650)
Managed Transactions and Syncing Movie Cast Members
In this lesson, we'll learn how we can use what we learned in the last lesson to also sync our cast members. We'll then extract this functionality into a service and wrap it within a managed database transactions.
![Video preview](https://videos.adocasts.com/4e59a1e8-3e50-43f8-bfee-ee50dfc1d930/preview.webp)
![Posting an Array of Objects with HTML Forms](/img/1/posting-an-array-of-objects-with-html-forms_1719352308432.jpeg?w=650)
Posting Objects, Arrays, and an Array of Objects in HTML Forms
In this lesson, we'll learn how we can use form field names to send an array of objects with our HTML form submission. We'll discuss pitfalls to watch out for and how we use AlpineJS to simplify index syncing within our field names.
Lessons.
![Video preview](https://videos.adocasts.com/5e47e382-b604-47ef-8700-ce5ba2bd250b/preview.webp)
![The Flow of Middleware](/img/1/the-flow-of-middleware_1713557920719.jpeg?w=650)
The Flow of Middleware
In this lesson, we'll learn about the middleware that comes preinstalled within AdonisJS and the flow of this middleware during an HTTP Request at both a global and route-specific scale.
![Video preview](https://videos.adocasts.com/0236fb26-92a4-4f33-8d46-7f9c5ee2ec2f/preview.webp)
![Authenticating A Newly Registered User](/img/1/authenticating-a-newly-registered-user_1713557940626.jpeg?w=650)
Authenticating A Newly Registered User
In this lesson, we'll learn how we can authenticate, or login, a new user who just registered with our application. We'll then see how we can populate the authenticated user's details on subsequent requests.
![Video preview](https://videos.adocasts.com/b5a90412-ec8a-44a1-ae56-e797f502aba3/preview.webp)
![AdonisJS 6 Session Authentication in 15 Minutes](/img/1/adonisjs-6-session-auth-in-15-minutes_1713397471654.jpeg?w=650)
AdonisJS 6 Session Authentication in 15 Minutes
In this lesson, we'll learn how to add authentication to a new AdonisJS 6 application using the session guard. In these 15 minutes, you'll learn how to register a user, logout a user, verify a user's credentials and log them in, and more.
![Video preview](https://videos.adocasts.com/d8a6d8c3-98c6-4940-90f7-abc47a845746/preview.webp)
![Creating A Login Form and Validator](/img/1/creating-a-login-form_1712872122576.jpeg?w=650)
Creating A Login Form and Validator
In this lesson, we'll apply what we've learned to create a login page as well as a validator for our login form.
![Video preview](https://videos.adocasts.com/05685ca1-898e-4405-9b75-64ee3c75ba91/preview.webp)
![Creating An EdgeJS Form Input Component](/img/1/extracting-a-form-input-component_1712871844027.jpeg?w=650)
Creating An EdgeJS Form Input Component
In this lesson, we'll create a form input component with EdgeJS to simplify adding inputs throughout our application and to extract away old value and validation error logic.
![Video preview](https://videos.adocasts.com/7ba92803-73c8-40a2-947a-87eb182a24ba/preview.webp)
![How To Create A Custom VineJS Validation Rule](/img/1/creating-a-custom-validation-rule_1712872253246.jpeg?w=650)
How To Create A Custom VineJS Validation Rule
In this lesson, we'll learn how to make a custom validation rule with VineJS that requires a value to be unique for the provided table and column. We'll learn how we can register this rule for both strings and number types.
![Video preview](https://videos.adocasts.com/527be4b0-6f13-421d-ba9f-3dc511bd5c96/preview.webp)
![Validating Form Data with VineJS](/img/1/form-validation_1712609716349.jpeg?w=650)
Validating Form Data with VineJS
In this lesson, we'll learn how to validate form data using AdonisJS homegrown validation library, VineJS. With VineJS we can easily ensure our request body consists of properties we need, in the types we need them, with valid values.
![Video preview](https://videos.adocasts.com/27d49160-30ef-4d46-aa34-b7126d70e9b6/preview.webp)
![Displaying Validation Errors](/img/1/displaying-validation-errors_1712609894830.jpeg?w=650)
Displaying Validation Errors and Validating from our Request
In this lesson, we'll learn how we can display feedback for invalid fields noted by errors from our VineJS validators. We'll also see how we can validate directly from our request using request data.
![Video preview](https://videos.adocasts.com/32adc32c-80f0-4ff6-a3bc-994e9796f0b9/preview.webp)
![Reusing Old Form Value After A Validation Error](/img/1/reusing-old-form-values_1712610041604.jpeg?w=650)
Reusing Old Form Values After A Validation Error
In this lesson, we'll learn how we can easily repopulate our form input values with their previously submitted values when our VineJS validator finds and sends back an error.
![Video preview](https://videos.adocasts.com/538727ec-a78b-4728-bd29-367cee6cd00f/preview.webp)
![Accepting Form Data](/img/1/accepting-form-data_1712263716206.jpeg?w=650)
Accepting Form Data
In this lesson, we'll take a look at how we can create a register form and accept data from that form within our route handler.
![Video preview](https://videos.adocasts.com/2cf5b451-d84c-4198-87b3-25157cf568b3/preview.webp)
![Data Pools](/img/1/creating-from-a-pool-of-records_1712263320401.jpeg?w=650)
How To Create Factory Relationships from a Pool of Data
In this lesson, we'll learn how we can refactor our fake data seeder to allow us to assign cast members and crew members to our movies via our many-to-many relationships from a single pool of cineast records.
![Video preview](https://videos.adocasts.com/0d39707a-170f-4fcd-acd7-0364c68266cc/preview.webp)
![Sorting and Filtering Pivot Table Data](/img/1/sorting-and-filtering-by-pivot-table-columns_1712263502442.jpeg?w=650)
How To Query, Sort, and Filter by Pivot Table Data
In this lesson, we'll learn how we can query pivot table data. We'll then learn how we can also sort and filter our results by those pivot table columns as well.
![Video preview](https://videos.adocasts.com/3729dfda-9ad8-4e3b-adc3-7f4f40383477/preview.webp)
![Defining Many to Many Relationships](/img/1/defining-many-to-many-relationships_1712008224067.jpeg?w=650)
Defining Many-To-Many Relationships and Pivot Columns
In this lesson, we'll learn how you can define many-to-many relationships within your Lucid ORM Models. We'll also discuss the relationship options, and how you can automatically include pivot table data with all queries.
![Video preview](https://videos.adocasts.com/e149ddc1-0303-4927-a0a6-92e447385b61/preview.webp)
![Many to Many Relationship Model Factories](/img/1/many-to-many-relationship-factories_1712008444441.jpeg?w=650)
Many-To-Many Model Factory Relationships
In this lesson, we'll learn how we can define and use many-to-many relationships with Model Factories, including how we can define pivot table data when creating our fake records.
![Video preview](https://videos.adocasts.com/2e3e7ae1-b1da-45ae-beef-80968f4625e7/preview.webp)
![Relationship CRUD](/img/1/relationship-crud_1712008653529.jpeg?w=650)
A Deep Dive Into Relationship CRUD with Models
In this lesson, we'll take a deep look at how we can perform CRUD operations with one-to-one, one-to-many, many-to-one, and many-to-many relationships using our Lucid Models.
![Video preview](https://videos.adocasts.com/a721cb1d-8df6-4eaa-bd5b-c033c4aa3e33/preview.webp)
![Using Eager and Lazy Loading to Load A Movie's Writer and Director](/img/1/using-eager-and-lazy-loading-to-display-our-writer-and-director_1711405557846.jpeg?w=650)
Using Eager and Lazy Loading to Load A Movie's Writer and Director
In this lesson, we'll learn how we can use eager loading to preload our writer and director onto our movie's details. We'll then, learn how we can load our writer and director onto our movie's details using lazy loading.
![Video preview](https://videos.adocasts.com/f5fb28f0-1610-4365-9990-94a355201593/preview.webp)
![Listing A Director's Movies with Relationship Existance Queries](/img/1/listing-a-directors-movies-with-relationship-existance-queries_1711404762921.jpeg?w=650)
Listing A Director's Movies with Relationship Existence Queries
In this lesson, we'll learn how we can perform a relationship existence check to grab a list of our cineasts who have directed one or more movies. We'll then create a show page for that director, listing the movies that they directed.
![Video preview](https://videos.adocasts.com/10c063fa-1c1c-45d0-b151-b28a14328e57/preview.webp)
![Listing and Counting a Writer's Movies](/img/1/listing-and-counting-a-writers-movies_1711405170637.jpeg?w=650)
Listing and Counting a Writer's Movies
In this lesson, we'll learn how we can perform multiple different relationship counts with the same relationship using the Model Query Builder. We'll count our writer's total number of released and not-released movies.
![Video preview](https://videos.adocasts.com/bef2b225-56b1-4859-a2ee-194f71416922/preview.webp)
![Cascading and Deleting Model Relationships](/img/1/cascading-and-deleting-model-relationships_1711054709409.jpeg?w=650)
Cascading and Deleting Model Relationships
In this lesson, we'll learn how to account for foreign key constraints when deleting relationships using our Lucid Models. We'll then learn how we can automatically cascade deletions through to relationships.
![Video preview](https://videos.adocasts.com/974bab49-e6ca-4932-bbd1-e601f9f7951e/preview.webp)
![Defining One to Many Relationships with Lucid Models](/img/1/defining-one-to-many-relationships_1711054916229.jpeg?w=650)
Defining One to Many Relationships with Lucid Models
In this lesson, we'll learn how to define one-to-many and many-to-one relationships using Lucid Models. We'll also learn how we can specify the columns that should be used for a relationship, allowing us to use one model for multiple relationships.
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