beforeRequest

Handler to overwrite request on server.
It can be used to overwrite params and headers.

Example:

data: {
  proxy: {
    beforeRequest: function(o){
	  //o.type - hint of request.
	  //Possible values: create/read/update/delete
	  
	  //o.params - server request params
	  //o.headers - server request headers
	  
	  o.params.page += 1;
	  
	  return o;
	}
  }
},

Default

undefined