Errai UI - Widgets not referenced in the template html

[gmoga]

Hi all,

I have been doing some proof of concept with Errai UI  and so far it seems very powerful but I have some questions about templating (Mapping template html fields with its Class DataFields).

Based on the Errai tutorial we have part of the Admin.html that looks like:

<table class="table striped blackened">

          <tbody id="complaints">

            <tr id="complaint" valign="top" class="issue-open">

              <td data-field="name">Lincoln Baxter, III</td>

              <td data-field="email">[e-mail]</td>

               ...

            </tr>

</table>

And the template class related to each row is ComplaintListItemWidget that looks like

@Templated("Admin.html#complaint")

public class ComplaintListItemWidget extends Composite implements HasModel<UserComplaint> {

  @Inject

  @AutoBound

  private DataBinder<UserComplaint> userComplaint;

...

    @Bound

  @DataField

  private final Element name = DOM.createTD();

  @Bound

  @DataField

  private final Element email = DOM.createTD();

...

My question is: if I need to remove the email TD of the template html, then it also must be removed from the ComplaintListItemWidget class?. Is there a more flexible way to go (like mark the @Datafield not mandatory for example) in the template to put or remove things.

Thanks in advance for your answer

[csa]

Hi Gerardo,

There's currently no way to mark a @DataField as optional. This wouldn't be hard to implement though. Can you describe your use case for this?

Cheers,

Christian

[gmoga]

Hi Christian,

Thanks for the information.

So far I would like to be able to do some templating changes in a flexible way, as I do not want to change my class (template) if I remove a column in the template.

The approach you mention sounds good, and definetly will solve some part of the situation. I will be aware of any change or improvement related.

Thanks in advance,

Gerardo