/// <summary>
/// Takes action on the specified workflow item, representing a
/// membership request.
/// </summary>
/// <param name="workflowId">The id of the workflow </param>
/// <param name="action">The moderation action to be taken</param>
/// <param name="userId">The unique id of the user under moderation.</param>
/// <param name="communityId">The unique id of the community to which membership has been requested.</param>
public void Moderate(string workflowId, string action, string userId, string communityId)
{
var membershipRequest = GetMembershipRequest(userId, communityId);
var populatedWorkflowId = WorkflowId.Create(workflowId);
var requestReference = Reference.Create(CreateUri(membershipRequest.Group, membershipRequest.User));
try
{
var transitionToken = _workflowService.BeginTransitionSession(populatedWorkflowId, requestReference);
try
{
// Retrieve the moderation workflow associated with
// the item to be acted upon.
var workflow = _workflowService.Get(populatedWorkflowId);
// Leverage the workflow to determine what the
// resulting state of the item will be upon taking
// the specified action.
//retrieve the current state of the workflow item once the begintransitionsession begins.
var filter = new WorkflowItemFilter {
Target = requestReference
};
var criteria = new Criteria <WorkflowItemFilter> {
Filter = filter
};
var workflowItem = _workflowItemService.Get(criteria).Results.Last();
// Example: Current State: "Pending", Action: "Approve" => Transitioned State: "Approved"
var transitionedState = workflow.Transition(workflowItem.State, new WorkflowAction(action));
var subsequentWorkflowItem = new WorkflowItem(
workflow.Id,
transitionedState,
requestReference
);
_workflowItemService.Add(subsequentWorkflowItem, membershipRequest, transitionToken);
// Perform any application logic given the item's
// new state.
if (IsApproved(subsequentWorkflowItem.State))
{
_memberRepository.Add(_memberAdapter.Adapt(membershipRequest));
}
}
finally
{
_workflowService.EndTransitionSession(transitionToken);
}
}
catch (SocialAuthenticationException ex)
{
throw new SocialRepositoryException("The application failed to authenticate with Episerver Social.",
ex);
}
catch (MaximumDataSizeExceededException ex)
{
throw new SocialRepositoryException(
"The application request was deemed too large for Episerver Social.", ex);
}
catch (SocialCommunicationException ex)
{
throw new SocialRepositoryException("The application failed to communicate with Episerver Social.", ex);
}
catch (SocialException ex)
{
throw new SocialRepositoryException("Episerver Social failed to process the application request.", ex);
}
}