I'm writing a Registration Form Component. When form submits it triggers a create user action. createUser actions creates a new user via an ajax api call. If a user already exist, triggered user action fails. We know we cannot return a response from an ajax call, we need a callback for that. How do i tell me component that a user already exists?
// Register From Component
var Register = React.createClass({
saveUser : function(event){
event.preventDefault();
userActions.createUser(this.state.user);
},
render : function(){
return (
<div className="register-form">
{message}
<RegisterForm
user={this.state.user}
onChange={this.saveUserState}
onSave={this.saveUser}
errors={this.state.errors} />
</div>
);
}
});
// Api Ajax call
module.exports = {
saveUser : function(user) {
$.ajax({
type : 'POST',
data : {
email : user.email,
password : user.password
},
success: function(res){
}
});
},
};
// Actions
var UserActions = {
createUser : function(user){
var newUser = UserApi.saveUser(user);
Dispatcher.dispatch({
actionType : ActionTypes.CREATE_USER,
user : newUser
});
}
};
I was thinking of returning a boolean value from createUser method.
...
onSave : function(event){
if(userActions.createUser(this.state.user)){
//
}
}
...
But we cannot return a value from ajax request, how can i notify my component that api has failed to create a new user, so that it can render a error message to user.