/// <summary>
/// Performs update of master page details given submitted form data.
/// </summary>
/// <param name="form">Form containing updated master page zones data.</param>
/// <returns>Result of form post.</returns>
private FormResult UpdateMasterPage(Form form)
{
// Get identifier of master page that is being updated
string[] parts = form.Context.Split('|');
long masterPageId = Convert.ToInt64(parts[1]);
// Get master page details
long tenantId = _authenticationService.TenantId;
MasterPage masterPage = JsonConvert.DeserializeObject <MasterPage>(form.Data);
masterPage.TenantId = tenantId;
masterPage.MasterPageId = masterPageId;
// Do the update
_masterPageService.Update(masterPage);
// Return form result with no errors
return(_formHelperService.GetFormResult());
}