public static DataTableResponseModel <T> GetDataTableResponse <T>(this IQueryable <T> data,
DataTableRequestModel dataTableRequestModel) where T : class, new()
{
// Count or LongCount is very annoying cause an extra evaluation.
var totalRecords = data.Count();
var filters = new DataTableParamModelHelper();
var outputProperties = new DataTableTypeInfoModel <T>().Properties;
var filteredData = filters.ApplyFiltersAndSort(dataTableRequestModel, data, outputProperties);
var totalDisplayRecords = filteredData.Count();
var skipped = filteredData.Skip(dataTableRequestModel.DisplayStart);
var page = (dataTableRequestModel.DisplayLength <= 0
? skipped
: skipped.Take(dataTableRequestModel.DisplayLength)).ToArray();
var result = new DataTableResponseModel <T>
{
TotalRecord = totalRecords,
TotalDisplayRecord = totalDisplayRecords,
Echo = dataTableRequestModel.Echo,
Data = page.Cast <object>().ToArray()
};
return(result);
}
public static void SetFilterValue <T>(DataTableRequestModel model, string propertyName, string value) where T : class, new()
{
var properties = new DataTableTypeInfoModel <T>().Properties;
for (var i = 0; i < properties.Length; i++)
{
if (properties[i].PropertyInfo.Name != propertyName)
{
continue;
}
model.SearchValues[i] = value;
break;
}
}
internal static DataTableActionResult <T> Create <T>(DataTableRequestModel request,
DataTableResponseModel <T> response) where T : class, new()
{
var result = new DataTableActionResult <T>(response);
var dictionaryTransformFunc = new DataTableTypeInfoModel <T>().ToFuncDictionary();
result.Data =
result
.Data
.Transform(dictionaryTransformFunc)
.Transform <Dictionary <string, object>, Dictionary <string, object> >(
StringTransformer.StringifyValues);
result.Data = ApplyOutputRules(request, result.Data);
return(result);
}
/// <summary>
/// Get Filter Values to Dictionary, key is property name and value is filter value of the property.
/// </summary>
/// <param name="model"></param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
/// <remarks>If the filter value not found, then not have the property name (key) in Dictionary</remarks>
public static Dictionary <string, string> GetFilterValues <T>(DataTableRequestModel model) where T : class, new()
{
var properties = new DataTableTypeInfoModel <T>().Properties;
var filterValues = new Dictionary <string, string>();
for (var i = 0; i < properties.Length; i++)
{
var index = i;
ActionHelper.IgnoreError(() =>
{
var filterValue = model.SearchValues[index];
filterValues.Add(properties[index].PropertyInfo.Name, filterValue);
});
}
return(filterValues);
}
internal static Dictionary <string, object> MergeTransformValuesIntoDictionary <T, TTransform>(
Func <T, TTransform> transformInput, T input)
{
// Get the the properties from the input as a dictionary
var dict = new DataTableTypeInfoModel <T>().ToDictionary(input);
// Get the transform object
var transform = transformInput(input);
if (transform == null)
{
return(dict);
}
foreach (var propertyInfo in transform.GetType().GetTypeInfo().GetProperties())
{
dict[propertyInfo.Name] = propertyInfo.GetValue(transform, null);
}
return(dict);
}
