# amazingly

Published articles for amazingly.

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## Extending Craft CMS with Validation Rules and Behaviors

DevFeed: [Extending Craft CMS with Validation Rules and Behaviors](<https://devfeed.tech/articles/extending-craft-cms-with-validation-rules-and-behaviors-31262.md>)

Original publisher: [Read original article](<https://nystudio107.com/blog/extending-craft-cms-with-validation-rules-and-behaviors>)

Author: andrew@nystudio107.com (Andrew Welch)

Published: 2020-04-24T02:55:00Z

Content type: tutorial

Language: en

Sources: [nystudio107 | Articles on modern web development.](<https://devfeed.tech/sources/nystudio107-articles-on-modern-web-development.md>)

Topics: [Content Management System](<https://devfeed.tech/topics/cms.md>), [web applications](<https://devfeed.tech/topics/web-applications.md>), [Development](<https://devfeed.tech/topics/development.md>), [Framework](<https://devfeed.tech/topics/framework.md>), [Code](<https://devfeed.tech/topics/code.md>)

Tags: [amazingly](<https://devfeed.tech/tags/amazingly.md>), [application](<https://devfeed.tech/tags/application.md>), [built-in](<https://devfeed.tech/tags/built-in.md>), [cms](<https://devfeed.tech/tags/cms.md>), [code](<https://devfeed.tech/tags/code.md>), [craft](<https://devfeed.tech/tags/craft.md>), [customizable](<https://devfeed.tech/tags/customizable.md>), [development](<https://devfeed.tech/tags/development.md>), [flexible](<https://devfeed.tech/tags/flexible.md>), [framework](<https://devfeed.tech/tags/framework.md>), [functionality](<https://devfeed.tech/tags/functionality.md>), [insights](<https://devfeed.tech/tags/insights.md>), [offers](<https://devfeed.tech/tags/offers.md>), [platform](<https://devfeed.tech/tags/platform.md>), [using](<https://devfeed.tech/tags/using.md>), [web](<https://devfeed.tech/tags/web.md>)

### AI overview

A tutorial on extending Craft CMS by using its underlying Yii2 framework, with a focus on model validation rules and behaviors. It explains how models represent and validate data and how built-in validators can be leveraged.

### Source excerpt

Craft CMS is a web application that is amazingly flexible & customizable using the built-in functionality that the platform offers. Use the platform!