javascript - restangular remove and put error net::ERR_NAME_NOT_RESOLVED -

i have error when try put or remove restangular post , getlist() works perfectly, when i'm going edit mi object create object this

edited = restangular.copy(danger); 

danger modelobject template in table grab object table, object fine. in function try do

edited.put(); 

and error options http://dangers/1/ net::err_name_not_resolved

like restangular not generating url, post url http://localhost:8000/dangers/

i'm using gulp proxy in dev enviroment capture api requests

gulp.task('server', ['build'], function() {     gulp.src('./build')     .pipe($.webserver({     port: 8080,     host: 'localhost',     fallback: 'index.html',     livereload: {             enable: true,             port: 8181     },     open: true,     // django app     proxies: [{             source: '/api',             target: 'http://localhost:8000/api'         }]     })); }); 

this error django restframework needs trailing slash in every url solution add in config of restangular

restangularprovider.setrequestsuffix('/');