/// <summary>
/// Tries the state of the item.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="trigger">The trigger.</param>
/// <param name="errors">The errors.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
protected bool TryUpdateItemState(IRightDataModel model, RightTriggers trigger, List <IModelError> errors, IModelContext context = null)
{
var state = ExtractState(model);
var stateMachine = GetStateMachine(model);
if (stateMachine.CanFire(trigger))
{
stateMachine.Fire(trigger);
SetModelState(stateMachine.State, model);
return(service.TrySave(model, errors, context));
}
else
{
MakeErrorMessage(stateMachine, trigger, errors);
return(false);
}
}
/// <summary>
/// Constructs an error message and inserts it into to list
/// </summary>
protected virtual void MakeErrorMessage(StateMachine <RightStates, RightTriggers> stateMachine, RightTriggers trigger, List <IModelError> errors)
{
var errmsg = string.Format(
"Cannot set state to {0} at current state of {1}. Legal states are {2}",
trigger.ToString(),
stateMachine.State.ToString(),
string.Join(",", stateMachine.PermittedTriggers));
errors.Add(new ModelError {
Property = "", ErrorMessage = errmsg
});
}
/// <summary>
/// Tries the state of the item.
/// </summary>
/// <param name="id">The identifier.</param>
/// <param name="trigger">The trigger.</param>
/// <param name="errors">The errors.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
protected bool TryUpdateItemState(int id, RightTriggers trigger, List <IModelError> errors, IModelContext context = null)
{
var item = service.Get(id, errors, context);
return(TryUpdateItemState(item, trigger, errors, context));
}
