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I have been able to implement a CORS response with a fetch().
However, when I look to save() a model using PUT have been unable to implement this. The response which comes back is
OPTIONS http://[external domain] 501 (Not Implemented)
XMLHttpRequest cannot load http://[external domain]. Origin http://127.0.0.1:8888 is not allowed by Access-Control-Allow-Origin.
Can anyone give me an example of how to change backbone sync to implement this? or is this even possible?
When you do any action other than a
GETusing CORS you have to go through the pre-flight process as outlined in this question/answer: CORS – How do 'preflight' an httprequest? and also on this blog post: http://avalanche123.com/blog/2011/10/10/cross-domain-javascript-lessons-learned/You have to make some extra steps beyond the easy GET CORS workflow.