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.
- Author
- Tom Gobich
- Published
- Mar 22
- Duration
- 6m 56s
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
Transcript
Defining One to Many Relationships with 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! (2 Comments)
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cbernard
Hi Tom, is there any way to do a polymorphic relationship? Or how would you accomplish having a model (e.g. Comments) that could belong to more than one model type (e.g. Movies and Cinests)?
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tomgobich
Hey cbernard! Currently, there isn't a way to do polymorphic relationships with Lucid support. There are a couple of solutions you could use, maybe others as well.
Define a relationship column per relationship. If you only have a few tables needing the polymorphic relationship, you could just define an id column for each individual relationship, for example on
commentsyou could have a nullablemovie_idand a nullablecineast_idcolumn.This is the approach I use for comments here on the Adocasts site.
You could create a pivot table per relationship, for example, a
movie_commentsandcineast_comments. In this case, don't think of it as a many-to-many, but rather a has many with an additional has one step. movie → has many comments (movie_comments) → has one comment (comments).Hope this helps!
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