TF
/
docuri
mirror of https://github.com/jo/docuri.git
1
0
Fork 0
Code Releases Wiki Activity

Merge pull request #9 from jo/docuri-routes

Browse Source 
Completely new routing engine.
pull/12/head
Johannes Jörg Schmidt 11 years ago
parent 92ef468220 b8e5739e1a
commit 5c2d85b97d
10 changed files with 304 additions and 426 deletions
Show Stats Download Patch File Download Diff File

159
README.md
Unescape Escape View File

@ -1,96 +1,127 @@
# docuri [![Build Status](https://travis-ci.org/jo/docuri.svg?branch=master)](https://travis-ci.org/jo/docuri)
# DocURI [![Build Status](https://travis-ci.org/jo/docuri.svg?branch=master)](https://travis-ci.org/jo/docuri)
Rich document ids for CouchDB:
```js
'movie/blade-runner/gallery-image/12/medium'
```
type/id/subtype/index/version
```
For example: `movie/blade-runner/gallery-image/12/medium`
Docuris have many advantages:
* You can access the doc type (eg. in changes feed)
* They sort well in Futon
* They tell a lot about the document
### Advantages
* You can access the doc type everywhere (eg. in changes feed, response, view results...)
* They sort well in Futon and` _all_docs`
* DocURIs can tell a lot about the document
* You can rely on a schema and construct ids of dependend documents (eg. a specific version of an image)
* You can easily delete related documents (eg. by requesting a range from `_all_docs`)
* Easily delete related documents (eg. by requesting a range from `_all_docs`)
...and I'm sure I forgot to mention the best.
Give Docuris a try!
_Give DocURIs a try!_
## Usage
Define methods for certain DocURI fragments and provide a routes hash that pairs routes to methods.
DocURI is inspired by [Backbone.Router](http://backbonejs.org/#Router).
Routes can contain parameter parts, `:param`, which match a single DocURI component
between slashes; and splat parts `*splat`, which can match any number of DocURI
components. Part of a route can be made optional by surrounding it in
parentheses `(/:optional)`.
### `parse(string)`
Parse id string:
For example, a route of `'movie/:movie_id/gallery-image'` will generate a function which parses
```js
var docuri = require('docuri');
docuri.parse('mytype/myid/mysubtype/myindex/myversion');
// {
// type: 'mytype',
// id: 'myid',
// subtype: 'mysubtype',
// index: 'myindex',
// version: 'myversion'
// }
'movie/blade-runner/gallery-image/12'
// =>
{
movie_id: 'blade-runner',
id: '12'
}
```
and vice versa.
### `stringify(object)`
Build id string from object:
A route of `'movie/:movie_id/:type/*path'` will generate a function which parses
```js
docuri.stringify({
type: 'mytype',
id: 'myid',
subtype: 'mysubtype',
index: 'myindex',
version: 'myversion'
});
// 'mytype/myid/mysubtype/myindex/myversion'
'movie/blade-runner/gallery-image/12'
// =>
{
movie_id: 'blade-runner',
type: 'gallery-image',
path: ['12']
}
// and
'movie/blade-runner/gallery-image/12/medium'
// =>
{
movie_id: 'blade-runner',
type: 'gallery-image',
path: ['12', 'medium']
}
```
### `merge(objectOrString)`
Change id string components:
The route `'movie/:movie_id/gallery-image/:id(/:version)'` will generate a
function which parses
```js
docuri.merge('mytype/myid/mysubtype/myindex/myversion', {
type: 'my_new_type',
});
// 'my_new_type/myid/mysubtype/myindex/myversion'
'movie/blade-runner/gallery-image/12'
// =>
{
movie_id: 'blade-runner',
id: '12'
}
// as well as
'movie/blade-runner/gallery-image/12/medium'
// =>
{
movie_id: 'blade-runner',
id: '12',
version: 'medium'
}
```
### `parts(objectOrString)`
Array of components. Trailing `undefined` components are stripped off:
### `docuri.route(route, name)`
Create a single route. The `route` argument must be a routing string. The
`name` argument will be the identifier for the resulting function:
`docuri[name]`. Routes added later may override previously declared routes.
```js
docuri.parts('mytype/myid/');
// ['mytype', 'myid']
docuri.parts({ type: 'mytype', subtype: 'mysubtype' });
// ['mytype', undefined, 'mysubtype']
// parses 'page/home' as { id: 'home' }:
docuri.route('page/:id', 'page');
```
### `docuri.definition([array])`
Access or use custom definition:
### `docuri.routes(map)`
Install a routes hash which maps DocURIs with parameters to functions:
```js
docuri.definition();
// ['type', 'id', 'subtype', 'index', 'version']
docuri
.definition(['id', 'meta'])
.parse('42/answer');
// {
// id: '42',
// meta: 'answer'
// }
docuri.routes({
'movie/:id': 'movie',
'movie/:movie_id/:type/*path': 'movieAsset'
'movie/:movie_id/gallery-image/:id(/:version)': 'galleryImage',
});
```
Note: the (optional) argument to `docuri.definition` MUST be an array of strings
containing at least one item.
### `docuri[name](strOrObj, [obj])`
The functions generated by DocURI can have a different behaviour, depending on
the type and number of the supplied arguments:
## Browser support
To use docid in your client-side application, browserify it like this:
* `name(str)`: parse DocURI string to object
* `name(obj)`: generate DocURI string from object
* `name(str, obj)`: change DocURI string parts with values provided by object returning a string
The function returns `false` if a string can not be parsed, enabling type
checks.
#### Example
```js
docuri.movie('movie/blade-runner');
// { id: 'blade-runner' }
docuri.movieAsset('movie/blade-runner');
// false
docuri.galleryImage({ movie_id: 'blade-runner', id: 12 });
// 'movie/blade-runner/gallery-image/12'
docuri.galleryImage('movie/blade-runner/gallery-image/12', { version: 'large' });
// 'movie/blade-runner/gallery-image/12/large'
```
## Browser support
To use DocURI in your client-side application, browserify it like this:
```shell
browserify -s DocURI path/to/docuri/index.js > path/to/your/assets
```
Once added to your DOM, this will leave you with a global DocURI object for use
in your e.g. Backbone Models/Collections.
Or grab it from [browserify-as-a-service: docuri@latest](http://www.modulefarm.com/standalone/docuri@latest).
## Development
To run the unit tests:

146
index.js
Unescape Escape View File

@ -1,74 +1,138 @@
/*
* docuri: Rich document ids for CouchDB.
* DocURI: Rich document ids for CouchDB.
*
* Copyright (c) 2014 null2 GmbH Berlin
* Licensed under the MIT license.
*/
// type/id/subtype/index/version
var DEFINITION = ['type', 'id', 'subtype', 'index', 'version'];
var docuri;
module.exports = exports = docuri = {};
var docuri = module.exports = exports = {};
docuri.definition = function(definition) {
if (definition) {
DEFINITION = definition;
var reservedNames = ['routes', 'route'];
return docuri;
}
// Cached regular expressions for matching named param parts and splatted parts
// of route strings.
// http://backbonejs.org/docs/backbone.html#section-158
var optionalParam = /\((.*?)\)/g;
var namedParam = /(\(\?)?:\w+/g;
var splatParam = /\*\w+/g;
var escapeRegExp = /[\-{}\[\]+?.,\\\^$|#\s]/g;
return DEFINITION;
}
// Convert a route string into a regular expression,
// with named regular expressions for named arguments.
// http://backbonejs.org/docs/backbone.html#section-165
function routeToRegExp(src) {
var keys = [];
var route = src.replace(escapeRegExp, '\\$&')
.replace(optionalParam, '(?:$1)?')
.replace(namedParam, function(match, optional) {
keys.push(match);
return optional ? match : '([^/?]+)';
})
.replace(splatParam, function(match) {
keys.push(match);
return '([^?]*?)';
});
keys = keys.reduce(function(memo, key) {
var value = '\\' + key;
memo[key] = new RegExp(value + '(\\/|\\)|$)');
return memo;
}, {});
docuri.parts = function(obj) {
if (typeof obj === 'string') {
obj = docuri.parse(obj);
return {
src: src,
exp: new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$'),
keys: keys
}
}
var parts = DEFINITION.map(function(part) {
return obj[part];
});
// Given a route and a DocURI return an object of extracted parameters.
// Unmatched DocURIs will be treated as false.
// http://backbonejs.org/docs/backbone.html#section-166
function extractParameters(route, fragment) {
var params = route.exp.exec(fragment);
while (parts.length && (typeof parts[parts.length - 1] === 'undefined' || parts[parts.length - 1] === null)) {
parts.pop();
if (!params) {
return false;
}
return parts;
};
params = params.slice(1);
return Object.keys(route.keys).reduce(function(memo, key, i) {
var param = params[i];
docuri.parse = function(str) {
str = str || '';
if (param) {
if (key[0] === '*') {
param = param.split('/');
}
return str.split('/').reduce(function(obj, value, i) {
if (value) {
obj[DEFINITION[i]] = value;
memo[key.substr(1)] = param;
}
return obj;
return memo;
}, {});
};
}
docuri.stringify = function(obj) {
obj = obj || {};
// Insert named parameters from object.
function insertParameters(route, obj) {
var str = route.src;
return docuri.parts(obj).join('/');
};
Object.keys(route.keys).forEach(function(key) {
var k = key.substr(1);
var value = obj[k] || '';
docuri.merge = function(obj, objToMerge) {
objToMerge = objToMerge || {};
if (Array.isArray(value)) {
value = value.join('/');
}
if (typeof obj === 'string') {
obj = docuri.parse(obj);
str = str.replace(route.keys[key], value + '$1');
});
return str
.replace(/\(\/\)$/g, '')
.replace(/[)(]/g, '');
}
// Map routes
docuri.routes = function(map) {
Object.keys(map).forEach(function(route) {
docuri.route(route, map[route]);
});
};
// Manually bind a single named route
docuri.route = function(route, name) {
if (reservedNames.indexOf(name) > -1) {
throw('Reserved name "' + name + '" cannot be used.');
}
DEFINITION.forEach(function(part) {
if (part in objToMerge) {
obj[part] = objToMerge[part];
route = routeToRegExp(route);
docuri[name] = function(source, target) {
source = source || {};
if (target) {
source = extractParameters(route, source);
Object.keys(target).forEach(function(key) {
source[key] = target[key];
});
}
});
return docuri.stringify(obj);
if (typeof source === 'object') {
return insertParameters(route, source);
}
if (typeof source === 'string') {
return extractParameters(route, source);
}
};
};

28
test/definition_test.js
Unescape Escape View File

@ -1,28 +0,0 @@
var test = require('tap').test;
var definition = require('..').definition;
test('default configuration', function(t) {
t.deepEqual(definition(), ['type', 'id', 'subtype', 'index', 'version'], 'should return default parts');
t.end();
});
test('set configuration', function(t) {
var parts = ['my', 'parts'];
t.type(definition(parts).merge, 'function', 'should return docuri api: merge');
t.type(definition(parts).parse, 'function', 'should return docuri api: parse');
t.type(definition(parts).stringify, 'function', 'should return docuri api: stringify');
t.end();
});
test('change configuration', function(t) {
var parts = ['my', 'parts'];
definition(parts);
t.deepEqual(definition(), parts, 'should return custom parts');
t.end();
});
test('use changed configuration', function(t) {
var parts = ['my', 'parts'];
t.deepEqual(definition(parts).parse('one/two'), { my: 'one', parts: 'two'}, 'should use custom parts');
t.end();
});

51
test/docuri-test.js
Unescape Escape View File

@ -0,0 +1,51 @@
var test = require('tap').test;
var docuri = require('..');
test('simple route', function(t) {
docuri.route('page', 'page');
t.deepEqual(docuri.page('page'), {}, 'parsed page returns empty object');
t.equal(docuri.page('image'), false, 'parsed image returns false');
t.equal(docuri.page(), 'page', 'generate page url');
t.end();
});
test('named parameter', function(t) {
docuri.route('page/:id', 'page');
t.deepEqual(docuri.page('page/mypage'), { id: 'mypage' }, 'parsed page has "id" set to "mypage"');
t.equal(docuri.page({ id: 'mypage' }), 'page/mypage', 'stringified page results in "page/mypage"');
t.end();
});
test('optional parameter', function(t) {
docuri.route('page(/:id)', 'page');
t.deepEqual(docuri.page('page'), {}, 'parsed page returns empty object');
t.deepEqual(docuri.page('page/mypage'), { id: 'mypage' }, 'parsed page has "id" set to "mypage"');
t.equal(docuri.page(), 'page', 'stringified empty page results in "page"');
t.equal(docuri.page({ id: 'mypage' }), 'page/mypage', 'stringified page results in "page/mypage"');
t.end();
});
test('two named parameters', function(t) {
docuri.route('page/:page_id/content/:id', 'content');
t.deepEqual(docuri.content('page/mypage/content/mycontent'), { page_id: 'mypage', id: 'mycontent' }, 'parsed content has "page_id" set to "mypage" and "id" set to "mycontent"');
t.equal(docuri.content({ page_id: 'mypage', id: 'mycontent' }), 'page/mypage/content/mycontent', 'stringified content results in "page/mypage/content/mycontent"');
t.end();
});
test('splat parameter', function(t) {
docuri.route('page/*path', 'page');
t.deepEqual(docuri.page('page/mypage/otherpage'), { path: ['mypage', 'otherpage'] }, 'parsed page has "parts" set to ["mypage","otherpage"]');
t.equal(docuri.page({ path: ['mypage', 'otherpage'] }), 'page/mypage/otherpage', 'stringified page results in "page/mypage/otherpage"');
t.end();
});

27
test/merge-test.js
Unescape Escape View File

@ -0,0 +1,27 @@
var test = require('tap').test;
var docuri = require('..');
test('named parameter', function(t) {
docuri.route('page/:id', 'page');
t.equal(docuri.page('page/mypage', { id: 'otherpage' }), 'page/otherpage', 'merged page has "id" set to "otherpage"');
t.end();
});
test('optional parameter', function(t) {
docuri.route('page(/:id)', 'page');
t.deepEqual(docuri.page('page/mypage'), { id: 'mypage' }, 'parsed page has "id" set to "mypage"');
t.equal(docuri.page('page/mypage', { id: 'otherpage' }), 'page/otherpage', 'merged page has "id" set to "otherpage"');
t.end();
});
test('two named parameters', function(t) {
docuri.route('page/:page_id/content/:id', 'content');
t.equal(docuri.content('page/mypage/content/mycontent', { id: 'othercontent' }), 'page/mypage/content/othercontent', 'merged content has "id" set to "othercontent"');
t.end();
});

62
test/merge_test.js
Unescape Escape View File

@ -1,62 +0,0 @@
var test = require('tap').test;
var merge = require('..').merge;
test('changing type component', function(t) {
t.equal(merge('type/id/subtype/index/version', {type:'new_type'}), 'new_type/id/subtype/index/version', 'should return docuri string with type changed');
t.end();
});
test('changing id component', function(t) {
t.equal(merge('type/id/subtype/index/version', {id:'new_id'}), 'type/new_id/subtype/index/version', 'should return docuri string with id changed');
t.end();
});
test('changing subtype component', function(t) {
t.equal(merge('type/id/subtype/index/version', {subtype:'new_subtype'}), 'type/id/new_subtype/index/version', 'should return docuri string with subtype changed');
t.end();
});
test('changing index component', function(t) {
t.equal(merge('type/id/subtype/index/version', {index:'new_index'}), 'type/id/subtype/new_index/version', 'should return docuri string with index changed');
t.end();
});
test('changing version component', function(t) {
t.equal(merge('type/id/subtype/index/version', {version:'new_version'}), 'type/id/subtype/index/new_version', 'should return docuri string with version changed');
t.end();
});
test('changing unknown component', function(t) {
t.equal(merge('type/id/subtype/index/version', {unknown:'i dont know'}), 'type/id/subtype/index/version', 'should return unchanged docuri');
t.end();
});
test('missing second argument', function(t) {
t.equal(merge('type/id/subtype/index/version'), 'type/id/subtype/index/version', 'should return unchanged docuri string');
t.end();
});
test('changing type component using object', function(t) {
t.equal(merge({
type: 'type',
id: 'id',
subtype: 'subtype',
index: 'index',
version: 'version'
}, {type:'new_type'}), 'new_type/id/subtype/index/version', 'should return docuri string with type changed');
t.end();
});
test('removing component with undefined', function(t) {
t.equal(merge('type/id/subtype/index/version', {version:undefined}), 'type/id/subtype/index', 'should return docuri string with version removed');
t.end();
});
test('removing component with null', function(t) {
t.equal(merge('type/id/subtype/index/version', {version:null}), 'type/id/subtype/index', 'should return docuri string with version removed');
t.end();
});

55
test/parse_test.js
Unescape Escape View File

@ -1,55 +0,0 @@
var test = require('tap').test;
var parse = require('..').parse;
test('missing argument', function(t) {
t.deepEqual(parse(), {}, 'should return empty object');
t.end();
});
test('empty string', function(t) {
t.deepEqual(parse(''), {}, 'should return empty object');
t.end();
});
test('type', function(t) {
t.deepEqual(parse('mytype'), { type: 'mytype' }, 'should return object with type');
t.end();
});
test('type/id', function(t) {
t.deepEqual(parse('mytype/myid'), {
type: 'mytype',
id: 'myid'
}, 'should return object with type and id');
t.end();
});
test('type/id/subtype', function(t) {
t.deepEqual(parse('mytype/myid/mysubtype'), {
type: 'mytype',
id: 'myid',
subtype: 'mysubtype'
}, 'should return object with type, id and subtype');
t.end();
});
test('type/id/subtype/index', function(t) {
t.deepEqual(parse('mytype/myid/mysubtype/myindex'), {
type: 'mytype',
id: 'myid',
subtype: 'mysubtype',
index: 'myindex'
}, 'should return object with type, id, subtype and index');
t.end();
});
test('type/id/subtype/index/version', function(t) {
t.deepEqual(parse('mytype/myid/mysubtype/myindex/myversion'), {
type: 'mytype',
id: 'myid',
subtype: 'mysubtype',
index: 'myindex',
version: 'myversion'
}, 'should return object with type, id, subtype, index and version');
t.end();
});

36
test/parts_test.js
Unescape Escape View File

@ -1,36 +0,0 @@
var test = require('tap').test;
var parts = require('..').parts;
test('parts of type string', function(t) {
t.deepEqual(parts('type'), ['type'], 'should return array including type');
t.end();
});
test('parts of type/id string', function(t) {
t.deepEqual(parts('type/id'), ['type', 'id'], 'should return array including type and id');
t.end();
});
test('parts of type/id/subtype string', function(t) {
t.deepEqual(parts('type/id/subtype'), ['type', 'id', 'subtype'], 'should return array including type, id and subtype');
t.end();
});
test('parts of type//subtype string', function(t) {
t.deepEqual(parts('type//subtype'), ['type', undefined, 'subtype'], 'should return array including type, undefined and subtype');
t.end();
});
test('parts of type object', function(t) {
t.deepEqual(parts({ type: 'type' }), ['type'], 'should return array including type');
t.end();
});
test('parts of type/id object', function(t) {
t.deepEqual(parts({ type: 'type', id: 'id'}), ['type', 'id'], 'should return array including type and id');
t.end();
});
test('parts of type/id/subtype object', function(t) {
t.deepEqual(parts({ type: 'type', id: 'id', subtype: 'subtype' }), ['type', 'id', 'subtype'], 'should return array including type, id and subtype');
t.end();
});
test('parts of type//subtype object', function(t) {
t.deepEqual(parts({ type: 'type', subtype: 'subtype' }), ['type', undefined, 'subtype'], 'should return array including type, undefined and subtype');
t.end();
});

26
test/reserved-names-test.js
Unescape Escape View File

@ -0,0 +1,26 @@
var test = require('tap').test;
var docuri = require('..');
test('reserved name route', function(t) {
t.plan(1);
try {
docuri.route('page', 'route');
} catch(e) {
t.equal(e, 'Reserved name "route" cannot be used.', 'reserved name "route" should throw error');
}
t.end();
});
test('reserved name routes', function(t) {
t.plan(1);
try {
docuri.route('page', 'routes');
} catch(e) {
t.equal(e, 'Reserved name "routes" cannot be used.', 'reserved name "routes" should throw error');
}
t.end();
});

140
test/stringify_test.js
Unescape Escape View File

@ -1,140 +0,0 @@
var test = require('tap').test;
var stringify = require('..').stringify;
test('missing argument', function(t) {
t.deepEqual(stringify(), '', 'should return empty string');
t.end();
});
test('empty object', function(t) {
t.deepEqual(stringify({}), '', 'should return empty string');
t.end();
});
test('type', function(t) {
t.deepEqual(stringify({ type: 'mytype' }), 'mytype', 'should return string with type');
t.end();
});
test('/id', function(t) {
t.deepEqual(stringify({
id: 'myid'
}), '/myid', 'should return string with type and id');
t.end();
});
test('type/id', function(t) {
t.deepEqual(stringify({
type: 'mytype',
id: 'myid'
}), 'mytype/myid', 'should return string with type and id');
t.end();
});
test('//subtype', function(t) {
t.deepEqual(stringify({
subtype: 'mysubtype'
}), '//mysubtype', 'should return string with type, id and subtype');
t.end();
});
test('/id/subtype', function(t) {
t.deepEqual(stringify({
id: 'myid',
subtype: 'mysubtype'
}), '/myid/mysubtype', 'should return string with type, id and subtype');
t.end();
});
test('type/id/subtype', function(t) {
t.deepEqual(stringify({
type: 'mytype',
id: 'myid',
subtype: 'mysubtype'
}), 'mytype/myid/mysubtype', 'should return string with type, id and subtype');
t.end();
});
test('/id/subtype/index', function(t) {
t.deepEqual(stringify({
id: 'myid',
subtype: 'mysubtype',
index: 'myindex'
}), '/myid/mysubtype/myindex', 'should return string with type, id, subtype and index');
t.end();
});
test('type//subtype/index', function(t) {
t.deepEqual(stringify({
type: 'mytype',
subtype: 'mysubtype',
index: 'myindex'
}), 'mytype//mysubtype/myindex', 'should return string with type, id, subtype and index');
t.end();
});
test('type///index', function(t) {
t.deepEqual(stringify({
type: 'mytype',
index: 'myindex'
}), 'mytype///myindex', 'should return string with type, id, subtype and index');
t.end();
});
test('//subtype/index', function(t) {
t.deepEqual(stringify({
subtype: 'mysubtype',
index: 'myindex'
}), '//mysubtype/myindex', 'should return string with type, id, subtype and index');
t.end();
});
test('///index', function(t) {
t.deepEqual(stringify({
index: 'myindex'
}), '///myindex', 'should return string with type, id, subtype and index');
t.end();
});
test('type/id/subtype/index', function(t) {
t.deepEqual(stringify({
type: 'mytype',
id: 'myid',
subtype: 'mysubtype',
index: 'myindex'
}), 'mytype/myid/mysubtype/myindex', 'should return string with type, id, subtype and index');
t.end();
});
test('////version', function(t) {
t.deepEqual(stringify({
version: 'myversion'
}), '////myversion', 'should return string with type, id, subtype, index and version');
t.end();
});
test('type/id/subtype/index/version', function(t) {
t.deepEqual(stringify({
type: 'mytype',
id: 'myid',
subtype: 'mysubtype',
index: 'myindex',
version: 'myversion'
}), 'mytype/myid/mysubtype/myindex/myversion', 'should return string with type, id, subtype, index and version');
t.end();
});
test('0/1/2/3/4', function(t) {
t.deepEqual(stringify({
type: 0,
id: 1,
subtype: 2,
index: 3,
version: 4
}), '0/1/2/3/4', 'should correctly handle number path fields');
t.end();
});
Write Preview
Loading…
Cancel
Save