reactjs - Dynamically set form field values in React + Redux -
my app's store has store.authstate subtree. in subtree, there 3 things, authtoken , isfetching boolean and, importantly fields object. form contains 2 fields : username , password . i have created action called set_form_field_value should generate , update each field's state changed user. i set_form_field_value update fields object. if user fills in both username , password fields, store.authstate should this: { authtoken: undefined, isfetching: false, fields: { username: "brachamul", password: "azerty123" } } however, seems current code overwrites , end : { field: { username: "brachamul" } } the data in field changes based on field last edited. it's either username or password. here code : switch (action.type) { case 'set_form_field_value': let field = {} // create "field" object represent current field field[action.fieldname] = ...