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|
#= require ./csrf
#= require ./event
{ CSRFProtection, fire } = Rails
AcceptHeaders =
'*': '*/*'
text: 'text/plain'
html: 'text/html'
xml: 'application/xml, text/xml'
json: 'application/json, text/javascript'
script: 'text/javascript, application/javascript, application/ecmascript, application/x-ecmascript'
Rails.ajax = (options) ->
options = prepareOptions(options)
xhr = createXHR options, ->
response = processResponse(xhr.response ? xhr.responseText, xhr.getResponseHeader('Content-Type'))
if xhr.status // 100 == 2
options.success?(response, xhr.statusText, xhr)
else
options.error?(response, xhr.statusText, xhr)
options.complete?(xhr, xhr.statusText)
if options.beforeSend? && !options.beforeSend(xhr, options)
return false
if xhr.readyState is XMLHttpRequest.OPENED
xhr.send(options.data)
prepareOptions = (options) ->
options.url = options.url or location.href
options.type = options.type.toUpperCase()
# append data to url if it's a GET request
if options.type is 'GET' and options.data
if options.url.indexOf('?') < 0
options.url += '?' + options.data
else
options.url += '&' + options.data
# Use "*" as default dataType
options.dataType = '*' unless AcceptHeaders[options.dataType]?
options.accept = AcceptHeaders[options.dataType]
options.accept += ', */*; q=0.01' if options.dataType isnt '*'
options
createXHR = (options, done) ->
xhr = new XMLHttpRequest()
# Open and setup xhr
xhr.open(options.type, options.url, true)
xhr.setRequestHeader('Accept', options.accept)
# Set Content-Type only when sending a string
# Sending FormData will automatically set Content-Type to multipart/form-data
if typeof options.data is 'string'
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8')
xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest') unless options.crossDomain
# Add X-CSRF-Token
CSRFProtection(xhr)
xhr.withCredentials = !!options.withCredentials
xhr.onreadystatechange = ->
done(xhr) if xhr.readyState is XMLHttpRequest.DONE
xhr
processResponse = (response, type) ->
if typeof response is 'string' and typeof type is 'string'
if type.match(/\bjson\b/)
try response = JSON.parse(response)
else if type.match(/\b(?:java|ecma)script\b/)
script = document.createElement('script')
script.text = response
document.head.appendChild(script).parentNode.removeChild(script)
else if type.match(/\b(xml|html|svg)\b/)
parser = new DOMParser()
type = type.replace(/;.+/, '') # remove something like ';charset=utf-8'
try response = parser.parseFromString(response, type)
response
# Default way to get an element's href. May be overridden at Rails.href.
Rails.href = (element) -> element.href
# Determines if the request is a cross domain request.
Rails.isCrossDomain = (url) ->
originAnchor = document.createElement('a')
originAnchor.href = location.href
urlAnchor = document.createElement('a')
try
urlAnchor.href = url
# If URL protocol is false or is a string containing a single colon
# *and* host are false, assume it is not a cross-domain request
# (should only be the case for IE7 and IE compatibility mode).
# Otherwise, evaluate protocol and host of the URL against the origin
# protocol and host.
!(((!urlAnchor.protocol || urlAnchor.protocol == ':') && !urlAnchor.host) ||
(originAnchor.protocol + '//' + originAnchor.host == urlAnchor.protocol + '//' + urlAnchor.host))
catch e
# If there is an error parsing the URL, assume it is crossDomain.
true
|
