JavaScript client for FHIR
- Support FHIR CRUD operations
- Friendly and expressive query syntax
- Support for adapters that provide idiomatic interfaces in angular, jQuery, extjs, etc
- Support for access control (HTTP basic, OAuth2)
- ...
Node.js
is required for build.
We recommend installling Node.js using nvm
Build & test:
git clone https://github.com/FHIR/fhir.js
cd fhir.js
npm install
# buld fhir.js
npm run-script build
# run all tests once
npm run-script spec
# watch tests while development
npm run-script spec-watch
# run integration tests
npm run-script integrate
To communicate with concrete FHIR server, you can create instance of the FHIR client, passing a configuration object & adapter object. Adapters are implemented for concrete frameworks/libs (see below).
var cfg = {
// FHIR server base url
baseUrl: 'http://myfhirserver.com',
auth: {
bearer: 'token',
// OR for basic auth
user: 'user',
pass: 'secret'
}
}
myClient = fhir(cfg, adapter)
Currently each adapter must implement an
http(requestObj)
function:
Structure of requestObj:
method
- http method (GET|POST|PUT|DELETE)url
- url for requestheaders
- object with headers (i.e. {'Category': 'term; scheme="sch"; label="lbl"'}success
- success callback, which should be called with (data, status, headersFn, config)- data - parsed body of responce
- status - responce HTTP status
- headerFn - function to get header, i.e. headerFn('Content')
- config - initial requestObj passed to http
error
- error callback, which should be called with (data, status, headerFn, config)
Here are implementations for:
To create a FHIR resource, call
myClient.create(entry, callback, errback)
, passing
an object that contains the following propperties:
content
(required) - resource in FHIR jsontags
(opttional) - list of categories (see below)
In case of success,the callback function will be invoked with an object that contains the following attributes:
id
- url of created resourcecontent
- resource jsoncategory
- list of tags
var entry = {
category: [{term: 'TAG term', schema: 'TAG schema', label: 'TAG label'}, ...]
content: {
resourceType: 'Patient',
//...
}
}
myClient.create(entry,
function(entry){
console.log(entry.id)
},
function(error){
console.error(error)
}
)
fhir.search('Patient', queryObject, callback, errback)
function is used
for FHIR resource's search.
If success callback will be called with resulting bundle.
For queryObject syntax fhir.js
adopts
mongodb-like query syntax (see):
{name: 'maud'}
//=> name=maud
{name: {$exact: 'maud'}}
//=> name:exact=maud
{name: {$or: ['maud','dave']}}
//=> name=maud,dave
{name: {$and: ['maud',{$exact: 'dave'}]}}
//=> name=maud&name:exact=Dave
{birthDate: {$gt: '1970', $lte: '1980'}}
//=> birthDate=>1970&birthDate=<=1980
{subject: {$type: 'Patient', name: 'maud', birthDate: {$gt: '1970'}}}
//=> subject:Patient.name=maud&subject:Patient.birthDate=>1970
{'subject.name': {$exact: 'maud'}}
//=> subject.name:exact=maud
For more information see tests
AngularJS adapter after npm run-script build
can be found at dist/ngFhir.js
Usage:
angular.module('app', ['ng-fhir'])
.config ($fhirProvider)->
$fhirProvider.baseUrl = 'http://try-fhirplace.hospital-systems.com'
.controller 'mainCtrl', ($scope, $fhir)->
$fhir.search
type: 'Patient'
query: {name: {$exact: 'Maud'}}
error: (error)-> $scope.error = error
success: (bundle)-> $scope.patients = bundle.entry
jQuery build can be found at dist/jqFhir.js
Usage:
<script src="./jquery-???.min.js"> </script>
<script src="./jqFhir.js"> </script>
// create fhir instance
var fhir = jqFhir({
baseUrl: 'https://ci-api.fhir.me',
auth: {user: 'client', pass: 'secret'}
})
fhir.search({type: 'Patient', query: {name: 'maud'}})
.then(function(bundle){
console.log('Search patients', bundle)
})
Via NPM you can npm install fhir.js
. (If you want to work on the source code,
you can compile coffee to js via npm install
, and use ./lib/adapters/node
as an entrypoint.)
var mkFhir = require('fhir.js');
var client = mkFhir({
baseUrl: 'http://try-fhirplace.hospital-systems.com'
});
client.search( {type: 'Patient', query: { 'birthdate': '1974' }}, function(err, bundle) {
var count = (bundle.entry && bundle.entry.length) || 0;
console.log("# Patients born in 1974: ", count);
});
YUI build can be found at dist/yuiFhir.js
NOTE: The current implementation creates a YUI sandbox per request which is expensive.
Usage:
<script src="./yui-???.min.js"> </script>
<script src="./yuiFhir.js"> </script>
// create fhir instance
var fhir = jqFhir({
baseUrl: 'https://ci-api.fhir.me',
auth: {user: 'client', pass: 'secret'}
})
fhir.search(type: 'Patient', query: {name: 'maud'}, success: function(bundle) {}, error: function() {})
- npm package
- bower package
Join us by github issues or pull-requests
Released under the MIT license.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.