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[Database & ORM](/categories/database) 4. / 5. openbuildings/jam-freezable ActiveKohana-module[Database & ORM](/categories/database) openbuildings/jam-freezable =========================== Freeze dynamically computed values in the database using Jam 0.1.3(12y ago)03.0kBSD-3-ClausePHPPHP >=5.3.0 Since Nov 13Pushed 12y ago14 watchersCompare [ Source](https://github.com/OpenBuildings/jam-freezable)[ Packagist](https://packagist.org/packages/openbuildings/jam-freezable)[ Docs](https://github.com/OpenBuildings/jam-freezable)[ RSS](/packages/openbuildings-jam-freezable/feed)WikiDiscussions master Synced 4w ago READMEChangelog (4)Dependencies (3)Versions (5)Used By (0) Freezable Behavior ================== [](#freezable-behavior) [![Build Status](https://camo.githubusercontent.com/7b07e951c18a58b9ab8fc90e2256b76068358e5ed89f08e3140c3bed758c6da0/68747470733a2f2f7472617669732d63692e6f72672f4f70656e4275696c64696e67732f6a616d2d667265657a61626c652e706e673f6272616e63683d6d6173746572)](https://travis-ci.org/OpenBuildings/jam-freezable)[![Scrutinizer Quality Score](https://camo.githubusercontent.com/7a617acc6288f3cc295aeaaba3f5b522838b08f722e1d114744f0d23c8a79cbf/68747470733a2f2f7363727574696e697a65722d63692e636f6d2f672f4f70656e4275696c64696e67732f6a616d2d667265657a61626c652f6261646765732f7175616c6974792d73636f72652e706e673f733d61313861373135356564653365613637303938383939376339336262353061366438623939333136)](https://scrutinizer-ci.com/g/OpenBuildings/jam-freezable/)[![Code Coverage](https://camo.githubusercontent.com/36cd6b01a36bb53df115918a8cfb55af6ab943917859624fd9bd5da1b356589d/68747470733a2f2f7363727574696e697a65722d63692e636f6d2f672f4f70656e4275696c64696e67732f6a616d2d667265657a61626c652f6261646765732f636f7665726167652e706e673f733d63626664613533343464666236326165366336373039386233316332373762343561663163353031)](https://scrutinizer-ci.com/g/OpenBuildings/jam-freezable/)[![Latest Stable Version](https://camo.githubusercontent.com/96b7d8739dd3afc410360b3fb79abcf9aa92f307e5cb1845d943fefe396301c3/68747470733a2f2f706f7365722e707567782e6f72672f6f70656e6275696c64696e67732f6a616d2d667265657a61626c652f762f737461626c652e706e67)](https://packagist.org/packages/openbuildings/jam-freezable) **Freezable** is a [Jam ORM](https://github.com/OpenBuildings/jam) behavior for freezing dynamically computed values in the database. --- Often one would have a method in the model which computes and returns a value. It could be a price, time or anything else. The computation could be a heavy one or time sensitive (based on time, currency exchange rates and other). Then you would need to save the value in a database column (a.k.a *freezing*) and in the future read the value from the field rather than the method. The Freezable behavior allows you to do exactly that in an easy way. The `freeze()`, `unfreeze()` and `is_frozen()` methos give you the convenience to easily get either the dynamically computed or the frozen value when needed. Usage ----- [](#usage) It has 3 parameters `associations`, `parent` and `fields` ``` class Some_Model extends Jam_Model { public static function initialize(Jam_Meta $meta) { $meta ->behaviors(array( 'freezable' => Jam::behavior('freezable', array( 'fields' => 'price', 'parent' => 'some_parent_model', 'associations' => array('some_child', 'some_children'), )), )); } //... } ``` That means that whenever the model is *frozen* then the field named `price` will be assigned the value of the method `price()`. And all the associations will be also *frozen*. The associations themselves have to be *freezable* (have the Freezable behavior attached) in order for this to work. And the `price()` method, as well as any other fields, have to take into account the value of the field. E.g. ``` public function price() { return $this->price ? $this->price : $this->compute_price(); } ``` The parent association is used in order to find the value of `is_frozen`, so that only one model holds the value of the flag. So that if you call `is_frozen()` on a *freezable* that has a *parent*, then it will get that value from the parent. Details ------- [](#details) TODO: add note about validation TODO: add more examples License ------- [](#license) Copyright (c) 2013 OpenBuildings, Inc. Developed by Ivan Kerin as part of [clippings.com](https://clippings.com). Under BSD-3-Clause license, read [LICENSE](LICENSE) file. ### Health Score 28 — LowBetter than 51% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity16 Limited adoption so far Community16 Small or concentrated contributor base Maturity51 Maturing project, gaining track record Bus Factor1 Top contributor holds 68.4% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~36 days Total 4 Last Release 4549d ago ### Community Maintainers ![](https://avatars.githubusercontent.com/u/506129?v=4)[Harry Dobrev](/maintainers/hkdobrev)[@hkdobrev](https://github.com/hkdobrev) ![](https://avatars.githubusercontent.com/u/4113307?v=4)[Danail Kyosev](/maintainers/dkyosev)[@dkyosev](https://github.com/dkyosev) ![](https://avatars.githubusercontent.com/u/7592650?v=4)[Evstati Zarkov](/maintainers/EZarkov)[@EZarkov](https://github.com/EZarkov) ![](https://avatars.githubusercontent.com/u/745771?v=4)[Filip Georgiev](/maintainers/phgeorgiev)[@phgeorgiev](https://github.com/phgeorgiev) ![](https://avatars.githubusercontent.com/u/490439?v=4)[Zdravko Evstatiev](/maintainers/zedevs)[@zedevs](https://github.com/zedevs) --- Top Contributors [![hkdobrev](https://avatars.githubusercontent.com/u/506129?v=4)](https://github.com/hkdobrev "hkdobrev (13 commits)")[![ivank](https://avatars.githubusercontent.com/u/4976?v=4)](https://github.com/ivank "ivank (6 commits)") --- Tags databasejamfreezing ### Embed Badge ![Health badge](/badges/openbuildings-jam-freezable/health.svg) ``` [![Health](https://phpackages.com/badges/openbuildings-jam-freezable/health.svg)](https://phpackages.com/packages/openbuildings-jam-freezable) ``` ### Alternatives [helsingborg-stad/municipio A bootstrap theme for creating municipality sites. 4028.6k10](/packages/helsingborg-stad-municipio)[andreyryabin/sprint.migration bitrix migration module 206212.7k2](/packages/andreyryabin-sprintmigration)[olliejones/index-wp-mysql-for-speed Speed up your WordPress site by adding high-performance keys (database indexes) to your MySQL database tables. 1501.9k](/packages/olliejones-index-wp-mysql-for-speed)[openbuildings/jam Small but feature rich ORM, has extensible models and builders, baked in upload functionality, supporting multiple backends (rackspace, ftp), polymorphic associations, form builders, nested forms, validators 32181.4k16](/packages/openbuildings-jam)[pressbooks/pressbooks-book This theme is named after Canadian media theorist Marshall McLuhan, who coined the phrase “the medium is the message.” It is designed for academic writing and is also suitable for fiction. 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