/// <summary>
/// Returns list of Custom Attributes for the specified extendable object with the values prepopulated
/// </summary>
/// <param name="extendableObject">The extendable object.</param>
/// <returns></returns>
public List <CustomAttributeDetail> BuildModelExtension(IExtendable extendableObject)
{
var modelExtension = new List <CustomAttributeDetail>();
var attributeConfigs = attributeConfigRepository.RetrieveAttributeConfigurationsForType(extendableObject.GetType().Name);
if (attributeConfigs == null || !attributeConfigs.Any())
{
attributeConfigs = attributeConfigRepository.RetrieveAttributeConfigurationsForType(extendableObject.GetType().BaseType.Name);
}
if (attributeConfigs == null || !attributeConfigs.Any())
{
return(modelExtension);
}
foreach (var customAttributeConfig in attributeConfigs)
{
var attributeDetail = new CustomAttributeDetail();
attributeDetail.AttributeKey = customAttributeConfig.AttributeKey;
attributeDetail.Category = customAttributeConfig.Category;
attributeDetail.Type = customAttributeConfig.CustomAttributeType;
attributeDetail.Value = GetAttributeValue(extendableObject, customAttributeConfig);
if (customAttributeConfig.CustomAttributeType == CustomAttributeType.Selection)
{
var refData = RetrieveSelectionDataForAttribute(customAttributeConfig.AttributeKey);
if (refData != null && refData.Any())
{
attributeDetail.RefData = refData.Select(s =>
new SelectListItem
{
Value = s.SelectionKey.ToString(),
Text = s.Value,
Selected = (attributeDetail.Value != null && s.Id == Convert.ToInt32(attributeDetail.Value))
}).ToList();
}
}
modelExtension.Add(attributeDetail);
}
return(modelExtension);
}
/// <summary>
/// Returns a list of unpopulated Custom Attributes for the specified type.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public List <CustomAttributeDetail> BuildModelExtension <T>() where T : IExtendable
{
var attributeConfigs = attributeConfigRepository.RetrieveAttributeConfigurationsForType(typeof(T).Name);
var modelExtension = new List <CustomAttributeDetail>();
if (attributeConfigs == null || !attributeConfigs.Any())
{
return(modelExtension);
}
foreach (var customAttributeConfig in attributeConfigs)
{
var attributeDetail = new CustomAttributeDetail();
attributeDetail.AttributeKey = customAttributeConfig.AttributeKey;
attributeDetail.Category = customAttributeConfig.Category;
attributeDetail.Type = customAttributeConfig.CustomAttributeType;
attributeDetail.Value = GetAttributeValue(null, customAttributeConfig);
if (customAttributeConfig.CustomAttributeType == CustomAttributeType.Selection)
{
var refData = RetrieveSelectionDataForAttribute(customAttributeConfig.AttributeKey);
if (refData != null && refData.Any())
{
attributeDetail.RefData = refData.Select(s =>
new SelectListItem
{
Value = s.SelectionKey.ToString(),
Text = s.Value
}).ToList();
}
}
modelExtension.Add(attributeDetail);
}
return(modelExtension);
}
/// <summary>
/// This is to handle the issue where the MVC Razor Engine is rendering the values for custom attribute controls as Arrays. Need to determine why this is happening.
/// </summary>
/// <param name="customAttributeDetail"></param>
/// <returns></returns>
private object ExtractValue(CustomAttributeDetail customAttributeDetail)
{
object returnValue = null;
if (customAttributeDetail.Value != null)
{
if (customAttributeDetail.Value.GetType().IsArray)
{
if (customAttributeDetail.Value.GetType() == typeof(string[]) && ((string[])customAttributeDetail.Value).Length == 1)
{
returnValue = ((string[])customAttributeDetail.Value).First();
}
}
else
{
returnValue = customAttributeDetail.Value;
}
}
switch (customAttributeDetail.Type)
{
case CustomAttributeType.Numeric:
return(returnValue == null ? default(decimal) : Decimal.Parse(returnValue.ToString(), CultureInfo.InvariantCulture));
case CustomAttributeType.String:
return(returnValue == null ? string.Empty : returnValue.ToString());
case CustomAttributeType.Selection:
return(returnValue == null ? default(int) : Int32.Parse(returnValue.ToString(), CultureInfo.InvariantCulture));
case CustomAttributeType.DateTime:
return(returnValue == null ? default(DateTime) : Convert.ToDateTime(returnValue));
}
throw new CustomAttributeException("Unable to extract custom attribute value for attribute {0}", customAttributeDetail.AttributeKey);
}