You don't really need a hard code example? Basically, imagine something
like:
var myActiveRecordObjectThatWontSerialize = GetNewInstance();
var simpleDTO = new SimpleDTOThatSerializes();
simpleDTO.Field1 = myActiveRecordObjectThatWontSerialize.Field1;
simpleDTO.Field2 =
myActiveRecordObjectThatWontSerialize.NestedObject.Field2;
etc...you could also possibly use AutoMapper or something like that to kind
of automate how that gets done.
SimpleDTOThatSerializes is something like:
public class SimpleDTOThatSerializes
{
public string Field1 { get; set; }
public string Field2 { get; set; }
}
Hope that helps...
Eric
On Fri, Mar 30, 2012 at 9:14 PM, Jose Pino <[email protected]> wrote:
> El jue, 29-03-2012 a las 21:18 -0700, Eric Tarasoff escribió:
> > You might not like this answer but in situations like this, or even in
> > Ajax situations, we use DTOs. Serializing complex object graphs (or
> > even not so complex ones) always seems to be problematic.
>
> you have any example to use DTO, link, code...with ActiveRecord
>
>
> thanks
>
>
> >
> > On Thu, Mar 29, 2012 at 8:54 PM, Joil <[email protected]> wrote:
> > Hi people, I have a problem with Relations mapping exposed in
> > a Web Service
> >
> > Model
> >
> > [ActiveRecord]
> > public class Ticket : ActiveRecordValidationBase<Ticket>
> > {
> > private IList _followup = new ArrayList();
> >
> > [PrimaryKey(PrimaryKeyType.Native)]
> > public int Id {
> > get; set;
> > }
> > ...
> > ...
> > [HasMany(typeof(Followup), Inverse = true,
> > Table="Followup", ColumnKey="TicketId")]
> > public IList Followups
> > {
> > get { return _followup; }
> > set { _followup = value; }
> > }
> > }
> >
> > [ActiveRecord]
> > public class Followup :
> > ActiveRecordValidationBase<Followup>
> > {
> > private Ticket _ticket;
> >
> > [PrimaryKey(PrimaryKeyType.Native)]
> > public int Id {
> > get; set;
> > }
> > ...
> > ...
> > [BelongsTo("TicketId")]
> > public Ticket TicketRef
> > {
> > get { return _ticket; }
> > set { _ticket = value; }
> > }
> > }
> >
> >
> > Web Serbice
> >
> > public class ws : System.Web.Services.WebService
> > {
> > [WebMethod()]
> > public Ticket[] ListAllTicket() {
> > return (Ticket[]) Ticket.FindAll(typeof(Ticket));
> > }
> > }
> >
> >
> > Error Invoke WebMethod, output :
> >
> > 500 - Internal Server Error
> > System.InvalidOperationException: There was an error
> > generating the XML document. --->
> > System.InvalidOperationException: A circular reference was
> > detected while serializing an object of type Ticket
> > at
> >
> System.Xml.Serialization.XmlSerializationWriter.WriteStartElement
> (System.String name, System.String ns, System.Object o, Boolean
> writePrefixed, ICollection namespaces) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriter.WriteStartElement
> (System.String name, System.String ns, System.Object o, Boolean
> writePrefixed) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriter.WriteStartElement
> (System.String name, System.String ns, System.Object o) [0x00000] in
> <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObject
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp, Boolean isNullable, Boolean
> needType, Boolean writeWrappingElem) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteMemberElement
> (System.Xml.Serialization.XmlTypeMapElementInfo elem, System.Object
> memberValue) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteElementMembers
> (System.Xml.Serialization.ClassMap map, System.Object ob, Boolean
> isValueList) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObjectElementElements
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob)
> [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObjectElement
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp) [0x00000] in <filename
> unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObject
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp, Boolean isNullable, Boolean
> needType, Boolean writeWrappingElem) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteMemberElement
> (System.Xml.Serialization.XmlTypeMapElementInfo elem, System.Object
> memberValue) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteListContent
> (System.Object container, System.Xml.Serialization.TypeData listType,
> System.Xml.Serialization.ListMap map, System.Object ob,
> System.Text.StringBuilder targetString) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteMemberElement
> (System.Xml.Serialization.XmlTypeMapElementInfo elem, System.Object
> memberValue) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteElementMembers
> (System.Xml.Serialization.ClassMap map, System.Object ob, Boolean
> isValueList) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObjectElementElements
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob)
> [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObjectElement
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp) [0x00000] in <filename
> unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObject
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp, Boolean isNullable, Boolean
> needType, Boolean writeWrappingElem) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteMemberElement
> (System.Xml.Serialization.XmlTypeMapElementInfo elem, System.Object
> memberValue) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteListContent
> (System.Object container, System.Xml.Serialization.TypeData listType,
> System.Xml.Serialization.ListMap map, System.Object ob,
> System.Text.StringBuilder targetString) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteListElement
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp) [0x00000] in <filename
> unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObject
> (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob,
> System.String element, System.String namesp, Boolean isNullable, Boolean
> needType, Boolean writeWrappingElem) [0x00000] in <filename unknown>:0
> > at
> >
> System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteRoot
> (System.Object ob) [0x00000] in <filename unknown>:0
> > at System.Xml.Serialization.XmlSerializer.Serialize
> > (System.Object o,
> > System.Xml.Serialization.XmlSerializationWriter writer)
> > [0x00000] in <filename unknown>:0
> > at System.Xml.Serialization.XmlSerializer.Serialize
> > (System.Xml.XmlWriter writer, System.Object o,
> > System.Xml.Serialization.XmlSerializerNamespaces namespaces)
> > [0x00000] in <filename unknown>:0
> > --- End of inner exception stack trace ---
> > at System.Xml.Serialization.XmlSerializer.Serialize
> > (System.Xml.XmlWriter writer, System.Object o,
> > System.Xml.Serialization.XmlSerializerNamespaces namespaces)
> > [0x00000] in <filename unknown>:0
> > at System.Xml.Serialization.XmlSerializer.Serialize
> > (System.Xml.XmlWriter xmlWriter, System.Object o) [0x00000] in
> > <filename unknown>:0
> > at System.Web.Services.Protocols.XmlReturnWriter.Write
> > (System.Web.HttpResponse response, System.IO.Stream
> > outputStream, System.Object returnValue) [0x00000] in
> > <filename unknown>:0
> > at
> >
> System.Web.Services.Protocols.HttpSimpleWebServiceHandler.ProcessRequest
> (System.Web.HttpContext context) [0x00000] in <filename unknown>:0
> >
> >
> >
> > Any idea, how to fix ?
> >
> >
> >
> >
> >
> >
>
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