Introducing Lucid Models
In this lesson, we'll introduce models using the Lucid ORM. We'll learn how we can map database columns to our model properties and specify special behavior for our date time columns.
- Author
- Tom Gobich
- Published
- Feb 28
- Duration
- 5m 43s
Developer, dog lover, and burrito eater. Currently teaching AdonisJS, a fully featured NodeJS framework, and running Adocasts where I post new lessons weekly. Professionally, I work with JavaScript, .Net C#, and SQL Server.
Adocasts
Burlington, KY
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Transcript
Introducing Lucid Models
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Introduction
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Fundamentals
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2.0Routes and How To Create Them5m 24s
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2.1Rendering a View for a Route6m 30s
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2.2Linking Between Routes7m 52s
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2.3Loading A Movie Using Route Parameters9m 18s
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2.4Validating Route Parameters6m 7s
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2.5Vite and Our Assets6m 39s
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2.6Setting Up Tailwind CSS7m 5s
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2.7Reading and Supporting Markdown Content4m 32s
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2.8Listing Movies from their Markdown Files8m 51s
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2.9Extracting Reusable Code with Services7m 4s
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2.10Cleaning Up Routes with Controllers4m 52s
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2.11Defining A Structure for our Movie using Models9m 38s
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2.12Singleton Services and the Idea of Caching6m 11s
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2.13Environment Variables and their Validation4m 16s
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2.14Improved Caching with Redis10m 44s
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2.15Deleting Items and Flushing our Redis Cache6m 46s
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2.16Quick Start Apps with Custom Starter Kits6m 28s
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2.17Easy Imports with NodeJS Subpath Imports8m 40s
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Building Views with EdgeJS
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3.0EdgeJS Templating Basics8m 49s
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3.1HTML Attribute and Class Utilities6m 9s
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3.2Making A Reusable Movie Card Component10m 24s
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3.3Component Tags, State, and Props4m 53s
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3.4Use Slots To Make A Button Component6m 56s
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3.5Extracting A Layout Component5m 13s
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3.6State vs Share Data Flow2m 59s
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3.7Share vs Global Data Flow6m 8s
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3.8Form Basics and CSRF Protection6m 13s
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3.9HTTP Method Spoofing HTML Forms3m 3s
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3.10Easy SVG Icons with Edge Iconify7m 57s
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Database and Lucid ORM Basics
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4.0Configuring Lucid and our Database Connection4m 3s
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4.1Understanding our Database Schema9m 35s
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4.2Introducing and Defining Database Migrations18m 35s
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4.3The Flow of Migrations8m 28s
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4.4Introducing Lucid Models5m 43s
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4.5Defining Our Models6m 49s
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4.6The Basics of CRUD11m 56s
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4.7Defining Required Data with Seeders11m 11s
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4.8Stubbing Fake Data with Model Factories13m 48s
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4.9Querying Our Movies with the Query Builder15m 30s
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4.10Unmapped and Computed Model Properties3m 24s
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4.11Altering Tables with Migrations7m 6s
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4.12Adding A Profile Model, Migration, Factory, and Controller2m 57s
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4.13SQL Parameters and Injection Protection9m 19s
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4.14Reusable Query Statements with Model Query Scopes8m 11s
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4.15Tapping into Model Factory States9m 15s
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4.16Querying Recently Released and Coming Soon Movies4m 59s
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4.17Generating A Unique Movie Slug With Model Hooks7m 59s
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Lucid ORM Relationships
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5.0Defining One to One Relationships Within Lucid Models5m 49s
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5.1Model Factory Relationships2m 54s
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5.2Querying Relationships and Eager Vs Lazy Loading5m 17s
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5.3Cascading and Deleting Model Relationships5m 16s
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5.4Defining One to Many Relationships with Lucid Models6m 56s
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5.5Seeding Movies with One to Many Model Factory Relationships5m 24s
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5.6Listing A Director's Movies with Relationship Existence Queries8m 41s
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5.7Listing and Counting a Writer's Movies8m 41s
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5.8Using Eager and Lazy Loading to Load A Movie's Writer and Director5m 18s
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5.9Defining Many-To-Many Relationships and Pivot Columns9m 48s
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5.10Many-To-Many Model Factory Relationships4m 50s
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5.11A Deep Dive Into Relationship CRUD with Models18m 5s
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5.12How To Create Factory Relationships from a Pool of Data13m 55s
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5.13How To Query, Sort, and Filter by Pivot Table Data9m 47s
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Working With Forms
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6.0Accepting Form Data12m 15s
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6.1Validating Form Data with VineJS9m 29s
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6.2Displaying Validation Errors and Validating from our Request7m 16s
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6.3Reusing Old Form Values After A Validation Error2m 3s
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6.4Creating An EdgeJS Form Input Component5m 28s
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6.5Creating A Login Form and Validator5m 1s
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6.6How To Create A Custom VineJS Validation Rule9m 7s
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Authentication & Middleware
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7.0The Flow of Middleware7m 49s
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7.1Authenticating A Newly Registered User4m 14s
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7.2Checking For and Populating an Authenticated User2m 10s
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7.3Logging Out An Authenticated User2m 24s
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7.4Logging In An Existing User6m 54s
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7.5Remembering A User's Authenticated Session6m 55s
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7.6Protecting Routes with Auth, Guest, and Admin Middleware5m 36s
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Filtering and Paginating Queries
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8.0Creating A Movie List Page3m 43s
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8.1Filtering A Query By Pattern Likeness7m 9s
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8.2Filtering Our List by Movie Status5m 47s
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8.3How To Apply A Dynamic Sort Filter To Your Query7m 12s
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8.4Joining SQL Tables To Order By A Related Column4m 49s
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8.5Validating Query String Filter Values7m 24s
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8.6How To Paginate Filtered Query Results9m 15s
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8.7Pagination First, Last, Next, and Previous Buttons4m 3s
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User Watchlist
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9.0An Alternative Approach to Many-To-Many Relationships4m 56s
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9.1Toggling A Movie in an Authenticated User's Watchlist9m 56s
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9.2Listing and Filtering User Watchlist Items7m 31s
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9.3Allowing Users To Toggle A Movie As Watched4m 44s
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9.4Filtering By User's Watched Status6m 7s
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9.5Defining A Composite Unique Constraint4m 47s
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9.6Persist Filters Easily with Lucid's Query String Method3m 58s
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User Profiles
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10.0How to Create and Fix Missing User Profiles in Your Application7m 37s
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10.1Using Dependency Injection to Update A User's Profile9m 46s
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10.2Saving All Or Nothing with Database Transactions5m 15s
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10.3Uploading and Displaying User Avatars15m 29s
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10.4Displaying A User's Profile6m 1s
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10.5Filtering, Preloading, and Sorting By Relationship7m 6s
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Admin Panel
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11.0Creating An Admin Layout7m 14s
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11.1Counting Stats for our Admin Dashboard5m 43s
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11.2Paginated Admin Movie Table13m 2s
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11.3Allowing Admins to Create Movies16m 39s
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11.4Allowing Admins to Update Movies and Clear Values13m 27s
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11.5How To Use One Form to Create or Edit Movies5m 32s
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11.6Uploading Movie Cover Images in our Create or Edit Form10m 29s
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11.7Using A Wildcard Route Param to Download Storage Images7m 57s
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11.8Posting Objects, Arrays, and an Array of Objects in HTML Forms26m 26s
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11.9Managed Transactions and Syncing Movie Cast Members15m 55s
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11.10Allowing Admins to Delete Movies and their Relationships7m 42s
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11.11Thank You for Watching!0m 31s
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Join The Discussion! (6 Comments)
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noctisy
Hi Tom,
When I initially created the adonis project, it didn't create the “User” model for me. Is there a “node ace” command to specifically create the “User” class? At first glance I don't seem to see one in the group “maker" command.
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tomgobich
Hi Noctisy! You most likely skipped installing an auth guard during your project's creation (this is a new question during project creation that was added after we released our lesson). You can get this easily added in by installing and configuring the AdonisJS Auth package!
https://docs.adonisjs.com/guides/authentication/introduction#installation
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hexacker
I just have a question about defining the model. I'm coming from NestJS/TypeORM background, and it's weird for me why you defined the migration first and then update the model second, could you please explain why.
In TypeORM, I used to define the DB models, and it'll take care of generating the tables in the DB automatically, by just setting synchronize to true in the connection config. Is there something similar in Lucid.
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tomgobich
Hey Hexacker!
In AdonisJS, migrations are what create our tables, foreign keys, indexes, etc. Migrations are great because they give us control to incrementally build or update our database as we need in the order we need. Most of the time, in starting an application, it'll seem tedious. But, as your application ages, they're fantastic for maintaining flexibility.
For example, if I have a pre-existing database with a
histories
table that holds two types of histories, view history and progression history. As the app ages, if I decide it'd behoove me to have this one table split into two, I can easily use migrations to create aview_histories
table and aprogression_histories
table. Then, in those same migrations, I can fill them directly with data from thehistories
table. Then, delete thehistories
table. These changes would take 3 migrations, which are run one after another at the same time my application with the needed code updates are deploying.create_view_histories_table
Creates the
view_histories
table, then uses thedefer
method to populate it with pre-existing view histories from thehistories
table.create_progression_histories_table
Creates the
progression_histories
table, then uses thedefer
method to populate it with pre-existing progression histories from thehistories
table.delete_histories_table
Drops the no longer needed
histories
tableModels then, are strictly used to aide in CRUD operations inside our code. At present, there is no official way to generate migrations nor models. However, I do have a package in dev release to generate models from a database.
Fun fact, the migration example above is based on a refactor I did on the Adocasts site.
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hexacker
Thank you Tom for the very detailed answer, it just looks really weird for me the process especially that I'm used to the flow on TypeORM, which scan the models, create the schema on the DB and you're good to go from there.
Your package looks very promising and it do a great job, I will check it and see if I can help you improve it.
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tomgobich
Anytime! The grass can be a different shade of green depending on the ecosystem you're in, but just because it is different doesn't mean it's a bad thing. The migration approach is a common and popular choice, used in the like of .NET, Laravel, and likely others but those are two I know and have personally used.
Thank you, Hexacker! The one thing those two (.NET & Laravel) offer that AdonisJS doesn't is model generation, which is why I wanted to make a package to at least offer something in that regard. An approach for model/migration generation has been something planned by the core team, but it is likely still a ways out.
With model generation in play, the flow would go:
Define migrations → run migrations → generate models
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