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Added _limit param. Example usage: _start=2&_limit=3 alternative to _start=2&_end=5.

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This commit is contained in:
Binali Rustamov
2015-04-28 15:16:14 +06:00
parent 23b0faf892
commit 34b95e2bac
4 changed files with 104 additions and 53 deletions
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21
src/router.js
View File

@ -7,7 +7,7 @@ var utils = require('./utils')
low.mixin(require('underscore-db'))
low.mixin(require('underscore.inflections'))
low.mixin({ createId: utils.createId })
low.mixin({createId: utils.createId})
module.exports = function(source) {
// Create router
@ -15,7 +15,7 @@ module.exports = function(source) {
// Add middlewares
router.use(bodyParser.json({limit: '10mb'}))
router.use(bodyParser.urlencoded({ extended: false }))
router.use(bodyParser.urlencoded({extended: false}))
router.use(methodOverride())
// Create database
@ -58,11 +58,12 @@ module.exports = function(source) {
var _end = req.query._end
var _sort = req.query._sort
var _order = req.query._order
var _limit = req.query._limit
delete req.query._start
delete req.query._end
delete req.query._sort
delete req.query._order
delete req.query._limit
if (req.query.q) {
@ -82,7 +83,7 @@ module.exports = function(source) {
// Add :parentId filter in case URL is like /:parent/:parentId/:resource
if (req.params.parent) {
filters[req.params.parent.slice(0, - 1) + 'Id'] = +req.params.parentId
filters[req.params.parent.slice(0, -1) + 'Id'] = +req.params.parentId
}
// Add query parameters filters
@ -104,7 +105,7 @@ module.exports = function(source) {
}
// Sort
if(_sort) {
if (_sort) {
_order = _order || 'ASC'
array = _.sortBy(array, function(element) {
@ -117,13 +118,13 @@ module.exports = function(source) {
}
// Slice result
_start = _start || 0
res.setHeader('X-Total-Count', array.length)
res.setHeader('Access-Control-Expose-Headers', 'X-Total-Count')
if (_end) {
res.setHeader('X-Total-Count', array.length)
res.setHeader('Access-Control-Expose-Headers', 'X-Total-Count')
_start = _start || 0
array = array.slice(_start, _end)
} else if (_limit) {
array = utils.limitArray(array, _start, _limit)
}
res.jsonp(array)

13
src/utils.js
View File

@ -49,13 +49,13 @@ function getRemovable(db) {
_(coll).each(function(doc) {
_(doc).each(function(value, key) {
if (/Id$/.test(key)) {
var refName = _.pluralize(key.slice(0, - 2))
var refName = _.pluralize(key.slice(0, -2))
// Test if table exists
if (db[refName]) {
// Test if references is defined in table
var ref = _.findWhere(db[refName], {id: value})
if (_.isUndefined(ref)) {
removable.push({ name: collName, id: doc.id })
removable.push({name: collName, id: doc.id})
}
}
}
@ -66,8 +66,15 @@ function getRemovable(db) {
return removable
}
//Returns limited array
function limitArray(array, start, limit) {
var end = parseInt(start) + parseInt(limit)
return array.slice(start, end)
}
module.exports = {
toNative: toNative,
createId: createId,
getRemovable: getRemovable
getRemovable: getRemovable,
limitArray: limitArray
}

93
test/index.js
View File

@ -1,7 +1,7 @@
var request = require('supertest')
var assert = require('assert')
var jsonServer = require('../src/')
var assert = require('assert')
var jsonServer = require('../src/')
var utils = require('../src/utils')
describe('Server', function() {
var server
@ -23,11 +23,17 @@ describe('Server', function() {
]
db.comments = [
{id: 1, published: true, postId: 1},
{id: 1, published: true, postId: 1},
{id: 2, published: false, postId: 1},
{id: 3, published: false, postId: 2},
{id: 4, published: false, postId: 2},
{id: 5, published: false, postId: 2},
{id: 6, published: false, postId: 2},
{id: 7, published: false, postId: 2},
{id: 8, published: false, postId: 2},
{id: 9, published: false, postId: 2},
{id: 10, published: false, postId: 2},
{id: 11, published: false, postId: 2}
]
db.refs = [
@ -89,11 +95,11 @@ describe('Server', function() {
})
it('should return an empty array when nothing is matched', function(done) {
request(server)
.get('/tags?q=nope')
.expect('Content-Type', /json/)
.expect([])
.expect(200, done)
request(server)
.get('/tags?q=nope')
.expect('Content-Type', /json/)
.expect([])
.expect(200, done)
})
})
@ -110,29 +116,29 @@ describe('Server', function() {
})
describe('GET /:resource?sort=', function() {
it('should respond with json and sort on a field', function(done) {
request(server)
.get('/tags?_sort=body')
.expect('Content-Type', /json/)
.expect([db.tags[1], db.tags[0], db.tags[2]])
.expect(200, done)
})
it('should respond with json and sort on a field', function(done) {
request(server)
.get('/tags?_sort=body')
.expect('Content-Type', /json/)
.expect([db.tags[1], db.tags[0], db.tags[2]])
.expect(200, done)
})
it('should reverse sorting with _order=DESC', function(done) {
request(server)
.get('/tags?_sort=body&_order=DESC')
.expect('Content-Type', /json/)
.expect([db.tags[2], db.tags[0], db.tags[1]])
.expect(200, done)
})
it('should reverse sorting with _order=DESC', function(done) {
request(server)
.get('/tags?_sort=body&_order=DESC')
.expect('Content-Type', /json/)
.expect([db.tags[2], db.tags[0], db.tags[1]])
.expect(200, done)
})
it('should sort on numerical field', function(done) {
request(server)
.get('/posts?_sort=id&_order=DESC')
.expect('Content-Type', /json/)
.expect(db.posts.reverse())
.expect(200, done)
})
it('should sort on numerical field', function(done) {
request(server)
.get('/posts?_sort=id&_order=DESC')
.expect('Content-Type', /json/)
.expect(db.posts.reverse())
.expect(200, done)
})
})
describe('GET /:resource?_start=&_end=', function() {
@ -147,6 +153,18 @@ describe('Server', function() {
})
})
describe('GET /:resource?_start=&_limit=', function() {
it('should respond with a limited array', function(done) {
request(server)
.get('/comments?_start=5&_limit=3')
.expect('Content-Type', /json/)
.expect('x-total-count', db.comments.length.toString())
.expect('Access-Control-Expose-Headers', 'X-Total-Count')
.expect(utils.limitArray(db.comments, 5, 3))
.expect(200, done)
})
})
describe('GET /:parent/:parentId/:resource', function() {
it('should respond with json and corresponding nested resources', function(done) {
request(server)
@ -154,7 +172,8 @@ describe('Server', function() {
.expect('Content-Type', /json/)
.expect([
db.comments[0],
db.comments[1]
db.comments[1],
])
.expect(200, done)
})
@ -196,7 +215,7 @@ describe('Server', function() {
.expect('Content-Type', /json/)
.expect({id: 3, body: 'foo', booleanValue: true, integerValue: 1})
.expect(200)
.end(function(err, res){
.end(function(err, res) {
if (err) return done(err)
assert.equal(db.posts.length, 3)
done()
@ -210,7 +229,7 @@ describe('Server', function() {
.send({url: 'http://foo.com', postId: '1'})
.expect('Content-Type', /json/)
.expect(200)
.end(function(err, res){
.end(function(err, res) {
if (err) return done(err)
assert.equal(db.refs.length, 2)
done()
@ -226,7 +245,7 @@ describe('Server', function() {
.expect('Content-Type', /json/)
.expect({id: 1, body: 'bar', booleanValue: true, integerValue: 1})
.expect(200)
.end(function(err, res){
.end(function(err, res) {
if (err) return done(err)
// assert it was created in database too
assert.deepEqual(db.posts[0], {id: 1, body: 'bar', booleanValue: true, integerValue: 1})
@ -252,7 +271,7 @@ describe('Server', function() {
.expect('Content-Type', /json/)
.expect({id: 1, body: 'bar'})
.expect(200)
.end(function(err, res){
.end(function(err, res) {
if (err) return done(err)
// assert it was created in database too
assert.deepEqual(db.posts[0], {id: 1, body: 'bar'})
@ -276,10 +295,10 @@ describe('Server', function() {
.del('/posts/1')
.expect({})
.expect(200)
.end(function(err, res){
.end(function(err, res) {
if (err) return done(err)
assert.equal(db.posts.length, 1)
assert.equal(db.comments.length, 3)
assert.equal(db.comments.length, 9)
done()
})
})

30
test/utils.js
View File

@ -1,5 +1,5 @@
var assert = require('assert')
var utils = require('../src/utils')
var utils = require('../src/utils')
describe('utils', function() {
@ -20,8 +20,8 @@ describe('utils', function() {
}
var expected = [
{ name: 'comments', id: 2 },
{ name: 'comments', id: 3 }
{name: 'comments', id: 2},
{name: 'comments', id: 3}
]
assert.deepEqual(utils.getRemovable(db), expected)
@ -46,4 +46,28 @@ describe('utils', function() {
})
})
describe('limitArray', function() {
it('should return limited array', function() {
var testArray = [
{id: 2, postId: 2},
{id: 3, postId: 4},
{id: 4, postId: 6},
{id: 5, postId: 8},
{id: 6, postId: 9},
{id: 7, postId: 10},
{id: 8, postId: 11},
{id: 9, postId: 12},
{id: 10, postId: 13},
{id: 11, postId: 14},
{id: 12, postId: 15},
{id: 13, postId: 16},
{id: 14, postId: 17},
{id: 15, postId: 18},
{id: 16, postId: 19}
]
assert.deepEqual(utils.limitArray(testArray, 3, 3), testArray.slice(3, 6))
assert.deepEqual(utils.limitArray(testArray, 5, 3), testArray.slice(5, 8))
})
})
})