--- title: New Package Laravel Rulebook: Well-Structured Business Rules description: A walkthrough of the Laravel Rulebook package by Matias Onia, which lets developers codify time-based business rules (like grandfathered pricing plans) as... canonical: https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: New Package Laravel Rulebook: Well-Structured Business Rules | daily.dev og:description: A walkthrough of the Laravel Rulebook package by Matias Onia, which lets developers codify time-based business rules (like grandfathered pricing plans) as... og:url: https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs og:image: https://api.daily.dev/og/posts/FiXtbtggs.png og:image:alt: New Package Laravel Rulebook: Well-Structured Business Rules og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # New Package Laravel Rulebook: Well-Structured Business Rules **[Laravel Daily](https://daily.dev/sources/laraveldaily)** · 10 min read · 3 upvotes · 0 comments ## Summary A walkthrough of the Laravel Rulebook package by Matias Onia, which lets developers codify time-based business rules (like grandfathered pricing plans) as classes with priority and validity logic instead of scattered if-statements. The demo builds a realistic SaaS invoicing scenario where pricing changed across 2024, 2025, and 2026, showing how the package resolves which pricing rule 'wins' based on subscription date. The video also includes a sponsored segment for Letter, a transactional email platform for Laravel/SaaS apps. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can I keep old pricing rules valid for grandfathered customers when my Laravel SaaS pricing changes every year? Use a package like Laravel Rulebook to define each pricing period as its own rule class with priority and validity conditions instead of chaining if-statements. Each year's price (e.g. 2024, 2025, 2026) becomes a separate class extending an abstract rule, and the rule book resolves which rule 'wins' based on when the customer subscribed, keeping old invoices stable even after prices change. _Developers designing versioned pricing logic can track Laravel package updates like this on daily.dev._ ### What is the Laravel Rulebook package used for? Laravel Rulebook is a package by Matias Onia for codifying business rules that change over time, such as pricing tiers that differ by subscription year. Instead of writing scattered if-statements, developers define rule classes with priority and evaluate methods extending a base Rule and RuleBook class, and the package resolves which rule applies for a given date or context. _Laravel developers weighing new packages for structured business logic can follow coverage like this on daily.dev._ ## Similar posts on daily.dev - [Laravel Rulebook: Business Rules That Change by Date](https://daily.dev/posts/laravel-rulebook-business-rules-that-change-by-date-2z40ztunf) · Laravel News · 26 upvotes · 2 comments --- Tags: [#architecture](https://daily.dev/tags/architecture), [#php](https://daily.dev/tags/php), [#laravel](https://daily.dev/tags/laravel), [#design-patterns](https://daily.dev/tags/design-patterns) [View this post on daily.dev](https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"New Package Laravel Rulebook: Well-Structured Business Rules","url":"https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs"},"datePublished":"2026-09-03T07:37:30.629Z","dateModified":"2026-09-03T07:37:51.173Z","description":"A walkthrough of the Laravel Rulebook package by Matias Onia, which lets developers codify time-based business rules (like grandfathered pricing plans) as...","image":"https://i.ytimg.com/vi/euEoyK87uj0/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/euEoyK87uj0/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Laravel Daily","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Laravel Daily","logo":"https://media.daily.dev/image/upload/s--vzdgNGfl--/f_auto/v1725044498/logos/laraveldaily","url":"https://daily.dev/sources/laraveldaily"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"architecture,php,laravel,design-patterns","timeRequired":"PT10M","video":{"@type":"VideoObject","name":"New Package Laravel Rulebook: Well-Structured Business Rules","description":"A walkthrough of the Laravel Rulebook package by Matias Onia, which lets developers codify time-based business rules (like grandfathered pricing plans) as...","thumbnailUrl":"https://i.ytimg.com/vi/euEoyK87uj0/sddefault.jpg","uploadDate":"2026-09-03T07:37:30.629Z","duration":"PT10M","url":"https://api.daily.dev/r/FiXtbtggs","embedUrl":"https://www.youtube.com/embed/euEoyK87uj0"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Laravel Daily","item":"https://daily.dev/sources/laraveldaily"},{"@type":"ListItem","position":3,"name":"New Package Laravel Rulebook: Well-Structured Business Rules"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/new-package-laravel-rulebook-well-structured-business-rules-fixtbtggs#faq","mainEntity":[{"@type":"Question","name":"How can I keep old pricing rules valid for grandfathered customers when my Laravel SaaS pricing changes every year?","acceptedAnswer":{"@type":"Answer","text":"Use a package like Laravel Rulebook to define each pricing period as its own rule class with priority and validity conditions instead of chaining if-statements. 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