/// <summary>
/// Processes the specified context.
/// </summary>
/// <param name="context">The context to process.</param>
public override void Process(FormBuilderContext context)
{
FormArrayAttribute arrayAttribute = context.Property.GetCustomAttribute <FormArrayAttribute>();
// Test to the form subobject attribute
if (arrayAttribute != null)
{
if (context.Property.PropertyType.GetInterfaces()
.Where(i => i.GetTypeInfo().IsGenericType)
.Select(i => i.GetGenericTypeDefinition()).Any(i => i == typeof(IEnumerable <>)))
{
// Get the subtype from a generic type argument
Type subType = context.Property.PropertyType.GetGenericArguments()[0];
// Create the subform
JContainer properties = context.FormBuilder.BuildForm(subType, context.OriginDtoType, context.TargetCulture, context.FullPropertyPath + "[]");
// Merge the properties of the sub object into the current context
JObject currentFormElement = context.GetOrCreateCurrentFormElement();
currentFormElement["key"] = context.FullPropertyPath;
currentFormElement["items"] = properties;
if (!string.IsNullOrEmpty(arrayAttribute.AddButtonTitle))
{
string addText = GetTextForKey(arrayAttribute.AddButtonTitle, context);
currentFormElement["add"] = new JValue(addText);
}
}
else
{
throw new InvalidOperationException("An " + nameof(FormArrayAttribute) + " must always be on a property with a type derived from IEnumerable<>");
}
}
}
/// <summary>
/// Processes the specified context.
/// </summary>
/// <param name="context">The context to process.</param>
public override void Process(SchemaBuilderContext context)
{
FormArrayAttribute arrayAttribute = context.Property.GetCustomAttribute <FormArrayAttribute>();
if (arrayAttribute != null)
{
JObject currentSchemaObject = context.Element.GetOrCreateSchemaObject();
if (context.Property.PropertyType.GetInterfaces()
.Where(i => i.GetTypeInfo().IsGenericType)
.Select(i => i.GetGenericTypeDefinition()).Any(i => i == typeof(IEnumerable <>)))
{
// The property is an generic enumerable type
Type underlyingType = context.Property.PropertyType.GetGenericArguments()[0];
// Build the schema for a complext type
JObject complexSchema = context.SchemaBuilder.BuildSchema(underlyingType, context.OriginDtoType, context.TargetCulture);
currentSchemaObject["title"] = new JValue(context.Property.Name);
currentSchemaObject["type"] = new JValue("array");
currentSchemaObject["items"] = complexSchema;
// Add minItems constraint if available
if (arrayAttribute.MinItems > 0)
{
currentSchemaObject["minItems"] = new JValue(arrayAttribute.MinItems);
}
// Add maxItems constraint if available
if (arrayAttribute.MaxItems > 0)
{
currentSchemaObject["maxItems"] = new JValue(arrayAttribute.MaxItems);
}
}
else
{
throw new InvalidOperationException("The FormArray attibute may be used only on properties using types implementing IEnumerable<>.");
}
}
}
