jquery - 415 Unsupported Media Type Cowboy REST Ajax -

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i having problem cowboy rest request method post. works fine if post done submitting form content, response when use ajax send post content server.

the error response : 415 unsupported media type

here code content_types_provided , content_types_accepted

content_types_accepted(req, state) ->     handler = [         {<<"text/html">>, handle_post_html},         {{<<"application">>,<<"json">>, []}, handle_post_html},         {{<<"text">>, <<"plain">>, []}, handle_post_html}],     {handler, req, state}.  content_types_provided(req, state)->     handler = [         {<<"text/html">>, parse_html},         {<<"application/json">>, parse_json},         {<<"text/plain">>, parse_plain_text}],     {handler, req, state}.

any body has idea on case?

why separate ?

try it:

content_types_accepted(req, state) ->     handler = [         {<<"text/html">>, handle_post_html},         {<<"application/json">>, handle_post_html},         {<<"text/plain">>, handle_post_html}],     {handler, req, state}.  content_types_provided(req, state)->     handler = [         {<<"text/html">>, parse_html},         {<<"application/json">>, parse_json},         {<<"text/plain">>, parse_plain_text}],     {handler, req, state}.

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