public Task BindModelAsync(ModelBindingContext bindingContext)
{
if (bindingContext == null)
{
throw new ArgumentNullException(nameof(bindingContext));
}
if (bindingContext.ModelType != typeof(FilterModel))
{
return(Task.CompletedTask);
}
var parameters = new Dictionary <string, string>();
foreach (var parameter in bindingContext.ModelType.GetProperties())
{
var valueProviderResult = bindingContext.ValueProvider.GetValue(parameter.Name);
if (valueProviderResult.FirstValue != null)
{
parameters.Add(parameter.Name, valueProviderResult.FirstValue);
}
}
var result = new FilterModel();
PropertyInfo[] properties = result.GetType().GetProperties();
foreach (var property in properties)
{
if (!parameters.Any(p => p.Key.Equals(property.Name, StringComparison.InvariantCultureIgnoreCase)))
{
continue;
}
KeyValuePair <string, string> parameter = parameters.First(p => p.Key.Equals(property.Name, StringComparison.InvariantCultureIgnoreCase));
Type propertyType = result.GetType().GetProperty(property.Name).PropertyType;
Type newType = Nullable.GetUnderlyingType(propertyType) ?? propertyType;
object newObject = Convert.ChangeType(parameter.Value, newType);
result.GetType().GetProperty(property.Name).SetValue(result, newObject, null);
}
bindingContext.Result = ModelBindingResult.Success(result);
return(Task.CompletedTask);
}
protected virtual string ApplyFilterToRequest(string resourceUrl, FilterModel filter)
{
if (filter == null)
{
return(resourceUrl);
}
var filters = new Dictionary <string, string>(filter.Filters);
var type = filter.GetType();
var props = type.GetProperties();
foreach (var p in props)
{
if (p.Name == nameof(filter.Filters) || p.Name == nameof(filter.IfModifiedSince))
{
continue;
}
var val = p.GetValue(filter);
if (val == null)
{
continue;
}
var sVal = string.Empty;
if (val.GetType() == typeof(DateTime))
{
sVal = ((DateTime?)val).Value.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ssK");
}
else if (val.GetType() == typeof(string[]))
{
sVal = string.Join(",", (string[])val);
}
else
{
sVal = val.ToString();
}
filters.Add(p.Name, sVal);
}
var res = Microsoft.AspNetCore.WebUtilities.QueryHelpers.AddQueryString(resourceUrl, filters);
return(res);
}
