/// <summary>
/// Creates new <see cref="DataTablesRequest{T}"/> from <see cref="NameValueCollection"/> instance.
/// </summary>
/// <param name="query"></param>
public DataTablesRequest(NameValueCollection query)
{
if (query == null)
{
throw new ArgumentNullException("Datatables query parameters collection is null.");
}
if (!query.HasKeys())
{
throw new ArgumentException("Datatables query has no keys.");
}
OriginalRequest = new NameValueCollection(query);
int start = Int32.TryParse(query["start"], out start) ? start : 0;
int length = Int32.TryParse(query["length"], out length) ? length : 15;
int draw = Int32.TryParse(query["draw"], out draw) ? draw : 0;
string globalSearch = query["search[value]"];
bool searchRegex = Boolean.TryParse(query["search[regex]"], out searchRegex) ? searchRegex : false;
int pageNumber = start / length + 1;
GlobalSearchValue = globalSearch;
GlobalSearchRegex = searchRegex;
PageNumber = pageNumber;
PageSize = length;
Draw = draw;
// extract columns info
string columnPattern = "columns\\[(\\d+)\\]\\[data\\]";
var columnKeys = query.AllKeys.Where(k => k != null && Regex.IsMatch(k, columnPattern));
foreach (var key in columnKeys)
{
var colIndex = Regex.Match(key, columnPattern).Groups[1].Value;
bool orderable = Boolean.TryParse(query[$"columns[{colIndex}][orderable]"], out orderable) ? orderable : true;
bool searchable = Boolean.TryParse(query[$"columns[{colIndex}][searchable]"], out searchable) ? searchable : true;
bool colSearchRegex = Boolean.TryParse(query["search[regex]"], out colSearchRegex) ? colSearchRegex : false;
bool colCISearch = Boolean.TryParse(query[$"columns[{colIndex}][cisearch]"], out colCISearch) ? colCISearch : false;
bool colCIOrder = Boolean.TryParse(query[$"columns[{colIndex}][ciorder]"], out colCIOrder) ? colCIOrder : false;
string data = query[$"columns[{colIndex}][data]"];
string name = query[$"columns[{colIndex}][name]"];
string searchValue = query[$"columns[{colIndex}][search][value]"];
string propertyName = null;
PropertyInfo propertyInfo = null;
Type type = typeof(T);
// take property name from `data`
if (colIndex.ToString() != data)
{
propertyInfo = GetPropertyByName(type, data);
if (propertyInfo != null)
{
propertyName = data;
}
else
{
throw new NoPropertyByNameException($"Could not find a property called \"{data}\" on type \"{type}\". Make sure you have specified correct value of \"columnDefs.data\" parameter in datatables options.");
}
}
// take property name from `name`
if (propertyInfo == null && !string.IsNullOrWhiteSpace(name))
{
propertyInfo = GetPropertyByName(type, name);
if (propertyInfo != null)
{
propertyName = name;
}
else
{
throw new NoPropertyByNameException($"Could not find a property called \"{name}\" on type \"{type}\". Make sure you have specified correct value of \"columnDefs.name\" parameter in datatables options.");
}
}
if (propertyName == null)
{
throw new NoPropertyByNameException($"Unable to associate datatables column \"{colIndex}\" with model type \"{typeof(T)}\". There are no matching public property found. Make sure you specified valid identifiers for \"columnDefs.data\" and/or \"columnDefs.name\" parameters in datatables options for the column \"{colIndex}\".");
}
var column = new DataTablesColumn <T>()
{
Index = Int32.Parse(colIndex),
PropertyName = propertyName,
SearchValue = searchValue,
SearchRegex = colSearchRegex,
IsSearchable = searchable,
IsOrderable = orderable,
SearchCaseInsensitive = colCISearch,
OrderingCaseInsensitive = colCIOrder
};
Columns.Add(column);
}
// extract sorting info
string orderPattern = "order\\[(\\d)\\]\\[column\\]";
var orderKeys = query.AllKeys.Where(k => k != null && Regex.IsMatch(k, orderPattern));
foreach (var key in orderKeys)
{
var index = Regex.Match(key, orderPattern).Groups[1].Value;
int columnIndex = 0;
int sortingIndex = 0;
if (Int32.TryParse(index, out sortingIndex) &&
Int32.TryParse(query[$"order[{index}][column]"], out columnIndex))
{
var column = Columns.FirstOrDefault(c => c.Index == columnIndex);
if (column != null)
{
column.OrderingIndex = sortingIndex;
column.OrderingDirection = query[$"order[{index}][dir]"] == "desc" ?
ListSortDirection.Descending : ListSortDirection.Ascending;
}
}
}
}
/// <summary>
/// Creates new <see cref="DataTablesRequest{T}"/> from <see cref="NameValueCollection"/> instance.
/// </summary>
/// <param name="query"></param>
public DataTablesRequest(NameValueCollection query)
{
if (query == null)
{
throw new ArgumentNullException("Datatables query parameters collection is null.");
}
if (!query.HasKeys())
{
throw new ArgumentException("Datatables query has no keys.");
}
mOrginalRequest = new NameValueCollection(query);
#if TRACE
Trace.WriteLine($"DataTables.Queryable incoming request parameters:");
query.AllKeys.ToList().ForEach(k => Trace.WriteLine($"{k} = {query[k]}"));
#endif
int start = Int32.TryParse(query["start"], out start) ? start : 0;
int length = Int32.TryParse(query["length"], out length) ? length : 15;
string sortFieldColumnIndex = query["order[0][column]"];
string globalSearch = query["search[value]"];
bool searchRegex = Boolean.TryParse(query["search[regex]"], out searchRegex) ? searchRegex : false;
int pageNumber = start / length + 1;
GlobalSearchValue = globalSearch;
GlobalSearchRegex = searchRegex;
PageNumber = pageNumber;
PageSize = length;
// extract columns info
string columnPattern = "columns\\[(\\d+)\\]\\[data\\]";
var columnKeys = query.AllKeys.Where(k => k != null && Regex.IsMatch(k, columnPattern));
foreach (var key in columnKeys)
{
var colIndex = Regex.Match(key, columnPattern).Groups[1].Value;
bool orderable = Boolean.TryParse(query[$"columns[{colIndex}][orderable]"], out orderable) ? orderable : true;
bool searchable = Boolean.TryParse(query[$"columns[{colIndex}][searchable]"], out searchable) ? searchable : true;
bool colSearchRegex = Boolean.TryParse(query["search[regex]"], out colSearchRegex) ? colSearchRegex : false;
bool colCISearch = Boolean.TryParse(query[$"columns[{colIndex}][cisearch]"], out colCISearch) ? colCISearch : false;
bool colCIOrder = Boolean.TryParse(query[$"columns[{colIndex}][ciorder]"], out colCIOrder) ? colCIOrder : false;
string data = query[$"columns[{colIndex}][data]"];
string name = query[$"columns[{colIndex}][name]"];
string searchValue = query[$"columns[{colIndex}][search][value]"];
string propertyName = null;
PropertyInfo propertyInfo = null;
Type type = typeof(T);
propertyInfo = GetPropertyByName(type, data);
if (propertyInfo != null)
{
propertyName = data;
}
else
{
propertyInfo = GetPropertyByName(type, name);
if (propertyInfo != null)
{
propertyName = name;
}
}
if (propertyName == null)
{
throw new ArgumentException($"Unable to associate datatables column \"{colIndex}\" with model type \"{typeof(T)}\". There are no matching public property found. Make sure you specified valid identifiers for \"data\" and/or \"name\" parameters in datatables options.");
}
var column = new DataTablesColumn <T>()
{
Index = Int32.Parse(colIndex),
PropertyName = propertyName,
SearchValue = searchValue,
SearchRegex = colSearchRegex,
IsSearchable = searchable,
IsOrderable = orderable,
SearchCaseInsensitive = colCISearch,
OrderingCaseInsensitive = colCIOrder
};
Columns.Add(column);
}
// extract sorting info
string orderPattern = "order\\[(\\d)\\]\\[column\\]";
var orderKeys = query.AllKeys.Where(k => k != null && Regex.IsMatch(k, orderPattern));
foreach (var key in orderKeys)
{
var index = Regex.Match(key, orderPattern).Groups[1].Value;
int columnIndex = 0;
int sortingIndex = 0;
if (Int32.TryParse(index, out sortingIndex) &&
Int32.TryParse(query[$"order[{index}][column]"], out columnIndex))
{
var column = Columns.FirstOrDefault(c => c.Index == columnIndex);
if (column != null)
{
column.OrderingIndex = sortingIndex;
column.OrderingDirection = query[$"order[{index}][dir]"] == "desc" ?
ListSortDirection.Descending : ListSortDirection.Ascending;
}
}
}
}
