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Add route GET /resources?_embed&_expand

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Typicode
2015-09-01 03:08:31 +02:00
parent e088025474
commit abec9490d9
2 changed files with 100 additions and 34 deletions
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72
src/server/router/plural.js
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@ -8,11 +8,37 @@ module.exports = function (db, name) {
// Create router
var router = express.Router()
// Embed function used in GET /name and GET /name/id
function embed (resource, e) {
e && [].concat(e)
.forEach(function (externalResource) {
if (db.object[externalResource]) {
var query = {}
var singularResource = pluralize.singular(name)
query[singularResource + 'Id'] = resource.id
resource[externalResource] = db(externalResource).where(query)
}
})
}
// Expand function used in GET /name and GET /name/id
function expand (resource, e) {
e && [].concat(e)
.forEach(function (innerResource) {
var plural = pluralize(innerResource)
if (db.object[plural]) {
var prop = innerResource + 'Id'
resource[innerResource] = db(plural).getById(resource[prop])
}
})
}
// GET /name
// GET /name?q=
// GET /name?attr=&attr=
// GET /name?_end=&*
// GET /name?_start=&_end=&*
// GET /name?_end=&
// GET /name?_start=&_end=&
// GET /name?_embed=&_expand=
function list (req, res, next) {
// Filters list
@ -29,12 +55,16 @@ module.exports = function (db, name) {
var _sort = req.query._sort
var _order = req.query._order
var _limit = req.query._limit
var _embed = req.query._embed
var _expand = req.query._expand
delete req.query.q
delete req.query._start
delete req.query._end
delete req.query._sort
delete req.query._order
delete req.query._limit
delete req.query._embed
delete req.query._expand
if (q) {
@ -99,6 +129,14 @@ module.exports = function (db, name) {
chain = chain.slice(_start, _start + _limit)
}
// embed and expand
chain = chain
.cloneDeep()
.forEach(function (element) {
embed(element, _embed)
expand(element, _expand)
})
res.locals.data = chain.value()
next()
}
@ -111,43 +149,17 @@ module.exports = function (db, name) {
var id = utils.toNative(req.params.id)
var resource = db(name).getById(id)
// Filter empty params
function filter (p) {
return p && p.trim().length > 0
}
if (resource) {
// Clone resource to avoid making changes to the underlying object
resource = _.cloneDeep(resource)
// Always use an array
_embed = [].concat(_embed)
_expand = [].concat(_expand)
// Embed other resources based on resource id
// /posts/1?_embed=comments
_embed
.filter(filter)
.forEach(function (otherResource) {
if (db.object[otherResource]) {
var query = {}
var singularResource = pluralize.singular(name)
query[singularResource + 'Id'] = id
resource[otherResource] = db(otherResource).where(query)
}
})
embed(resource, _embed)
// Expand inner resources based on id
// /posts/1?_expand=user
_expand
.filter(filter)
.forEach(function (innerResource) {
var plural = pluralize(innerResource)
if (db.object[plural]) {
var prop = innerResource + 'Id'
resource[innerResource] = db(plural).getById(resource[prop])
}
})
expand(resource, _expand)
res.locals.data = resource
}