Load a Record in EDIT Mode
To load a record that might be updated, set the force:recordData tag’s mode attribute to “EDIT”. Other than explicitly setting the mode, loading a record for editing is the same as loading it for any other purpose.
Call saveRecord to Save Record Changes
To perform the save operation, call saveRecord on the force:recordData component from the appropriate controller action handler. saveRecord takes one argument—a callback function to be invoked when the operation completes. This callback function receives a SaveRecordResult as its only parameter.
Saving a Record
The following example illustrates the essentials of saving a record using Lightning Data Service. It’s intended for use on a record page. The record ID is supplied by the implicit recordId attribute added by the force:hasRecordId interface.