public RuleConstraintValueViewModel(RuleConstraintValue ruleConstraintValue, IEnumerable <RuleConstraintName> ruleConstraintNames, ICaptionCommand removeConstraintCommand)
{
_model = ruleConstraintValue;
_ruleConstraintNames = ruleConstraintNames;
_removeConstraintCommand = removeConstraintCommand;
Values = ParameterSources.GetParameterSource(Left);
}
/// <summary>
/// Checks if type is supported by model binder instance.
/// </summary>
/// <param name="type">The type to check.</param>
/// <param name="source"></param>
/// <returns>
/// <c>true</c> is parameter is supported, otherwise <c>false</c>
/// </returns>
public bool DoesSupportType(Type type, ParameterSources source)
{
if (source == ParameterSources.Query || source == ParameterSources.Header)
{
foreach (var b in _queryBinders)
{
if (b.DoesSupportType(type))
{
return(true);
}
}
return(false);
}
if (source == ParameterSources.Body)
{
return(true);
}
throw new Exception("Error in ModelBinderCollection.DoesSupportType Parameter source needs to be set to Body, Query or Header");
}
/// <summary>
/// Gets the action parameters metadata for the given action context.
/// </summary>
/// <param name="actionCtx">The action context.</param>
/// <returns>Array of <see cref="ActionParameter"/> retrieved from action context.</returns>
public virtual ActionParameter[] GetParameters(ActionContext actionCtx)
{
var methodParams = actionCtx.Method.GetParameters();
ActionParameter[] parameters = new ActionParameter[methodParams.Length];
for (int i = 0; i < methodParams.Length; i++)
{
var param = actionCtx.Method.GetParameters()[i];
bool isFromQuery = false;
bool isFromBody = false;
bool isFromRoute = false;
bool isFromService = false;
bool isFromHeader = false;
string overridenName = null;
// todo: refactor with attribute inheritance
if (param.GetCustomAttribute <FromServicesAttribute>() != null)
{
isFromService = true;
}
else
{
isFromQuery = param.GetCustomAttribute <FromQueryAttribute>() != null;
isFromBody = param.GetCustomAttribute <FromBodyAttribute>() != null;
isFromRoute = param.GetCustomAttribute <FromRouteAttribute>() != null;
var headerAttrib = param.GetCustomAttribute <FromHeaderAttribute>();
if (headerAttrib != null)
{
isFromHeader = true;
overridenName = headerAttrib.HeaderName;
}
}
ParameterSources source = ParameterSources.Unknown;
if (isFromService)
{
source = ParameterSources.Service;
}
else if (isFromHeader)
{
source = ParameterSources.Header;
}
else if (isFromQuery && !isFromBody && !isFromRoute)
{
source = ParameterSources.Query;
}
else if (!isFromQuery && isFromBody && !isFromRoute)
{
source = ParameterSources.Body;
}
else if (!isFromQuery && !isFromBody && isFromRoute)
{
source = ParameterSources.RouteSegment;
}
parameters[i] = new ActionParameter(actionCtx, new ModelBinders.ModelBinderCollection(new JsonSerializer(), _services, _optionsRetriever))
{
Name = param.Name.ToLower(),
DefaultValue = param.DefaultValue,
HasDefaultValue = param.HasDefaultValue,
Type = param.ParameterType,
ParameterSource = source,
OverridenName = overridenName
};
if (parameters[i].ParameterSource == ParameterSources.Unknown)
{
if (parameters[i].IsComplex)
{
parameters[i].ParameterSource = ParameterSources.Body;
}
else if (actionCtx.RouteSegments.Any(x => x.IsParameter && x.ParameterName == parameters[i].Name))
{
parameters[i].ParameterSource = ParameterSources.RouteSegment;
}
else
{
parameters[i].ParameterSource = ParameterSources.Query;
}
}
}
return(parameters);
}
public void RegisterParameterSource(string parameterName, Func <IEnumerable <string> > action)
{
ParameterSources.Add(parameterName, action);
}
