A Node.js framework agnostic library for serializing your data to JSON API compliant responses (a specification for building APIs in JSON).
Why another library for serializing data to JSON API ?
Simply because others libraries are not as flexible as i need.
npm install --save json-api-serializervar JSONAPISerializer = require('json-api-serializer');
var Serializer = new JSONAPISerializer();
Serializer.register(type, options);Serialization options:
- id (optional): The key to use as the reference. Default = 'id'.
- blacklist (optional): An array of blacklisted attributes. Default = [].
- whitelist (optional): An array of whitelisted attributes. Default = [].
- links (optional): Describes the links inside data. It can be:
- An object (values can be string or function).
- A function with one argument
function(data) { ... }or with two argumentsfunction(data, extraData) { ... }
- topLevelMeta (optional): Describes the top-level meta. It can be:
- An object (values can be string or function).
- A function with one argument
function(extraData) { ... }or with two argumentsfunction(data, extraData) { ... }
- topLevelLinks (optional): Describes the top-level links. It can be:
- An object (values can be string or function).
- A function with one argument
function(extraData) { ... }or with two argumentsfunction(data, extraData) { ... }
- relationships (optional): An object defining some relationships
- relationship: The property in data to use as a relationship
- type: The type to use for serializing the relationship (type need to be register)
- alternativeKey (optional): An alternative key to use if relationship key not exist (example: 'author_id' as an alternative key for 'author' relationship). See issue #12.
- schema (optional): A custom schema for serializing the relationship. If no schema define, it use the default one.
- links (optional): Describes the links for the relationship. It can be:
- An object (values can be string or function).
- A function with one argument
function(data) { ... }or with two argumentsfunction(data, extraData) { ... }
- meta (optional): Describes meta that contains non-standard meta-information about the relationship. It can be:
- An object (values can be string or function).
- A function with one argument
function(data) { ... }or with two argumentsfunction(data, extraData) { ... }
- relationship: The property in data to use as a relationship
- convertCase (optional): Case conversion for serializing data. Value can be :
kebab-case,snake_case,camelCase
Deserialization options:
- unconvertCase (optional): Case conversion for deserializing data. Value can be :
kebab-case,snake_case,camelCase - blacklistOnDeserialize (optional): An array of blacklisted attributes. Default = [].
- whitelistOnDeserialize (optional): An array of whitelisted attributes. Default = [].
Global options:
To avoid repeating the same options for each type, it's possible to add global options on JSONAPISerializer instance:
var JSONAPISerializer = require('json-api-serializer');
var Serializer = new JSONAPISerializer({
convertCase: 'kebab-case',
unconvertCase: 'camelCase'
});input data (can be an object or an array of objects)
// Data
var data = [{
id: "1",
title: "JSON API paints my bikeshed!",
body: "The shortest article. Ever.",
created: "2015-05-22T14:56:29.000Z",
updated: "2015-05-22T14:56:28.000Z",
author: {
id: "1",
firstName: "Kaley",
lastName: "Maggio",
email: "Kaley-Maggio@example.com",
age: "80",
gender: "male"
},
tags: ["1", "2"],
photos: ["ed70cf44-9a34-4878-84e6-0c0e4a450cfe", "24ba3666-a593-498c-9f5d-55a4ee08c72e", "f386492d-df61-4573-b4e3-54f6f5d08acf"],
comments: [{
_id: "1",
body: "First !",
created: "2015-08-14T18:42:16.475Z"
}, {
_id: "2",
body: "I Like !",
created: "2015-09-14T18:42:12.475Z"
}, {
_id: "3",
body: "Awesome",
created: "2015-09-15T18:42:12.475Z"
}]
}]Register your resources types :
var JSONAPISerializer = require('json-api-serializer');
var Serializer = new JSONAPISerializer();
// Register 'article' type
Serializer.register('article', {
id: 'id', // The attributes to use as the reference. Default = 'id'.
blacklist: ['updated'], // An array of blacklisted attributes. Default = []
links: { // An object or a function that describes links.
self: function(data) { // Can be a function or a string value ex: { self: '/articles/1'}
return '/articles/' + data.id;
}
},
relationships: { // An object defining some relationships.
author: {
type: 'people', // The type of the resource
links: function(data) { // An object or a function that describes Relationships links
return {
self: '/articles/' + data.id + '/relationships/author',
related: '/articles/' + data.id + '/author'
}
},
},
tags: {
type: 'tag'
},
photos: {
type: 'photo'
},
comments: {
type: 'comment',
schema: 'only-body' // A custom schema
}
},
topLevelMeta: function(data, extraData) { // An object or a function that describes top level meta.
return {
count: extraData.count,
total: data.length
}
},
topLevelLinks: { // An object or a function that describes top level links.
self: '/articles' // Can be a function (with extra data argument) or a string value
}
});
// Register 'people' type
Serializer.register('people', {
id: 'id',
links: {
self: function(data) {
return '/peoples/' + data.id;
}
}
});
// Register 'tag' type
Serializer.register('tag', {
id: 'id',
});
// Register 'photo' type
Serializer.register('photo', {
id: 'id',
});
// Register 'comment' type with a custom schema
Serializer.register('comment', 'only-body', {
id: '_id',
});Serialize it with the corresponding resource type, data and optional extra data :
// Synchronously (blocking)
const result = Serializer.serialize('article', data, {count: 2});
// Asynchronously (non-blocking)
Serializer.serializeAsync('article', data, {count: 2})
.then((result) => {
...
});The output data will be :
{
"jsonapi": {
"version": "1.0"
},
"meta": {
"count": 2,
"total": 1
},
"links": {
"self": "/articles"
},
"data": [{
"type": "article",
"id": "1",
"attributes": {
"title": "JSON API paints my bikeshed!",
"body": "The shortest article. Ever.",
"created": "2015-05-22T14:56:29.000Z"
},
"relationships": {
"author": {
"data": {
"type": "people",
"id": "1"
},
"links": {
"self": "/articles/1/relationships/author",
"related": "/articles/1/author"
}
},
"tags": {
"data": [{
"type": "tag",
"id": "1"
}, {
"type": "tag",
"id": "2"
}]
},
"photos": {
"data": [{
"type": "photo",
"id": "ed70cf44-9a34-4878-84e6-0c0e4a450cfe"
}, {
"type": "photo",
"id": "24ba3666-a593-498c-9f5d-55a4ee08c72e"
}, {
"type": "photo",
"id": "f386492d-df61-4573-b4e3-54f6f5d08acf"
}]
},
"comments": {
"data": [{
"type": "comment",
"id": "1"
}, {
"type": "comment",
"id": "2"
}, {
"type": "comment",
"id": "3"
}]
}
},
"links": {
"self": "/articles/1"
}
}],
"included": [{
"type": "people",
"id": "1",
"attributes": {
"firstName": "Kaley",
"lastName": "Maggio",
"email": "Kaley-Maggio@example.com",
"age": "80",
"gender": "male"
},
"links": {
"self": "/peoples/1"
}
}, {
"type": "comment",
"id": "1",
"attributes": {
"body": "First !"
}
}, {
"type": "comment",
"id": "2",
"attributes": {
"body": "I Like !"
}
}, {
"type": "comment",
"id": "3",
"attributes": {
"body": "Awesome"
}
}]
}Some others examples are available in tests folders
input data (can be an simple object or an array of objects)
var data = {
data: {
type: 'article',
id: '1',
attributes: {
title: 'JSON API paints my bikeshed!',
body: 'The shortest article. Ever.',
created: '2015-05-22T14:56:29.000Z'
},
relationships: {
author: {
data: {
type: 'people',
id: '1'
}
},
comments: {
data: [{
type: 'comment',
id: '1'
}, {
type: 'comment',
id: '2'
}]
}
}
}
};
Serializer.deserialize('article', data);{
"id": "1",
"title": "JSON API paints my bikeshed!",
"body": "The shortest article. Ever.",
"created": "2015-05-22T14:56:29.000Z",
"author": "1",
"comments": [
"1",
"2"
]
}It is possible to define multiple custom schemas for a resource type :
Serializer.register(type, 'customSchema', options);Then you can apply this schema on the primary data when serialize or deserialize :
Serializer.serialize('article', data, 'customSchema', {count: 2});
Serializer.serializeAsync('article', data, 'customSchema', {count: 2});
Serializer.deserialize('article', jsonapiData, 'customSchema');Or if you want to apply this schema on a relationship data, define this schema on relationships options with the key schema :
Example :
relationships: {
comments: {
type: 'comment'
schema: 'customSchema'
}
}If your data contains one or multiple objects of different types, it's possible to define a configuration object instead of the type-string as the first argument of serialize and serializeAsync with these options:
- type (required): A string for the path to the key to use to determine type or a function deriving a type-string from each data-item.
- topLevelMeta (optional): Describes the top-level meta. It can be:
- An object (values can be string or function).
- A function with one argument
function(extraData) { ... }or with two argumentsfunction(data, extraData) { ... }
- topLevelLinks (optional): Describes the top-level links. It can be:
- An object (values can be string or function).
- A function with one argument
function(extraData) { ... }or with two argumentsfunction(data, extraData) { ... }
Example :
const typeConfig = {
// Same as type: 'type'
type: (data) => data.type, // Can be very complex to determine different types of items.
};
Serializer.serializeAsync(typeConfig, data, {count: 2})
.then((result) => {
// ...
});If your data contains one or multiple objects of different types, it's possible to define a configuration object instead of the type-string as the first argument of deserialize with these options:
- type (required): A string for the path to the key to use to determine type or a function deriving a type-string from each data-item.
Example :
const typeConfig = {
// Same as type: 'type'
type: (data) => data.type, // Can be very complex to determine different types of items.
};
const deserialized = Serializer.deserialize(typeConfig, data);json-api-serializer only use ECMAScript 2015 (ES6) features supported natively by Node.js 4 and above (ECMAScript 2015 (ES6) | Node.js). Make sure that you have Node.js 4+ or above.