Feature Request - support custom jackson object mapper

[liorhar]

It would be useful if the object mapper used to serialize the template parameters was customizable.
For example, the built-in object mapper uses PropertyNamingStrategy.UPPER_CAMEL_CASE while we prefer LOWER_CAMEL_CASE
Also, we're using Kotlin so registering the kotlin module would be very useful

[ibalosh]

Hi @liorhar

could you share bit more details on where do you use this and in which scenario? Are you referring to template model, when sending emails with templates?

Thanks

[valh1996]

Hi @ibalosh
I'm trying to send a List of DTO through setTemplateModel():

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
public class PeriodData {
    public LocalDate start;
    public LocalDate end;
}

List<PeriodData> periods = this.periodService.getPeriods(contract);
HashMap<String, Object> model = new HashMap<>() {{
    put("periods", periods);
   //
}};

TemplatedMessage message = new TemplatedMessage(senderAddress, recipient);
message.setMessageStream("outbound");
message.setTemplateId(templateId);
message.setTemplateModel(model);
postmarkClient.deliverMessageWithTemplate(message);

However, I encounter the following error:

Java 8 date/time type `java.time.LocalDate` not supported by default

The ObjectMapper defined here does not seem to have the Java Time module configured. Is there a fix please?

Update:
As a workaround, I use my own ObjectMapper to transform my model to json before sending it into the request:

message.setTemplateModel(mapper.writeValueAsString(model));

[ibalosh]

Hi @valh1996

Sorry for the late response. At the moment, we suggest transforming the model for specific objects, just the way you did in the workaround. If you would like to file a feature request that we could add in future, please create a separate feature request.