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124 lines
3.3 KiB
Markdown
124 lines
3.3 KiB
Markdown
# DocURI [](https://travis-ci.org/jo/docuri)
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Rich document ids for CouchDB:
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```js
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'movie/blade-runner/gallery-image/12/medium'
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```
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### Advantages
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* You can access the doc type everywhere (eg. in changes feed, response, view results...)
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* They sort well in Futon and` _all_docs`
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* DocURIs can tell a lot about the document
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* You can rely on a schema and construct ids of dependend documents (eg. a specific version of an image)
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* Easily delete related documents (eg. by requesting a range from `_all_docs`)
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_Give DocURIs a try!_
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## Usage
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Define methods for certain DocURI fragments and provide a routes hash that pairs routes to methods.
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DocURI is inspired by [Backbone.Router](http://backbonejs.org/#Router).
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Routes can contain parameter parts, `:param`, which match a single DocURI component
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between slashes; and splat parts `*splat`, which can match any number of DocURI
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components. Part of a route can be made optional by surrounding it in
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parentheses `(/:optional)`.
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For example, a route of `'movie/:movie_id/gallery-image'` will generate a function which parses
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```js
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'movie/blade-runner/gallery-image/12'
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// =>
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{
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movie_id: 'blade-runner',
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id: '12'
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}
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```
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and vice versa.
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A route of `'movie/:movie_id/:type/*path'` will generate a function which parses
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```js
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'movie/blade-runner/gallery-image/12'
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// =>
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{
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movie_id: 'blade-runner',
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type: 'gallery-image',
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path: ['12']
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}
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// and
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'movie/blade-runner/gallery-image/12/medium'
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// =>
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{
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movie_id: 'blade-runner',
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type: 'gallery-image',
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path: ['12', 'medium']
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}
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```
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The route `'movie/:movie_id/gallery-image/:id(/:version)'` will generate a
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function which parses
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```js
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'movie/blade-runner/gallery-image/12'
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// =>
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{
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movie_id: 'blade-runner',
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id: '12'
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}
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// as well as
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'movie/blade-runner/gallery-image/12/medium'
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// =>
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{
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movie_id: 'blade-runner',
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id: '12',
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version: 'medium'
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}
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```
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### `docuri.route(route)`
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Create a single route. The `route` argument must be a routing string.
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```js
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// parses 'page/home' as { id: 'home' }:
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var page = docuri.route('page/:id');
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```
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### `route(strOrObj, [obj])`
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The functions generated by DocURI can have a different behaviour, depending on
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the type and number of the supplied arguments:
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* `route(str)`: parse DocURI string to object
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* `route(obj)`: generate DocURI string from object
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* `route(str, obj)`: change DocURI string parts with values provided by object returning a string
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The function returns `false` if a string can not be parsed, enabling type
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checks.
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#### Example
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```js
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movie('movie/blade-runner');
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// { id: 'blade-runner' }
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movieAsset('movie/blade-runner');
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// false
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galleryImage({ movie_id: 'blade-runner', id: 12 });
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// 'movie/blade-runner/gallery-image/12'
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galleryImage('movie/blade-runner/gallery-image/12', { version: 'large' });
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// 'movie/blade-runner/gallery-image/12/large'
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```
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## Browser support
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To use DocURI in your client-side application, browserify it like this:
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```shell
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browserify -s DocURI path/to/docuri/index.js > path/to/your/assets
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```
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Or grab it from [browserify-as-a-service: docuri@latest](http://www.modulefarm.com/standalone/docuri@latest).
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## Development
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To run the unit tests:
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```shell
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npm test
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```
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## License
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Copyright (c) 2014 Johannes J. Schmidt, null2 GmbH
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Licensed under the Apache 2.0 license.
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