Re: how to select checkbox based on a hashmap

Ok so let me get this straight, in my .ftl (say if I put all of this in my
edit.ftl template for now):

<#assign hasKey =
'com.example.HasKeyMethod'?new()>`

   <#list projects as project>
                     <tr>
                         <td><label class="checkbox"><input id="project-${
project.id}" name="project-${project.id}" type="checkbox" />${project.name
}</label></td>
                     </tr>
   </#list>

And then inside the list above I do:

<#if hasKey(userProjects, project.id)>
</#if>

Is that it?



On Thu, Oct 18, 2012 at 4:25 AM, Daniel Dekany <[email protected]> wrote:

> Thursday, October 18, 2012, 3:22:37 AM, S Ahmed wrote:
>
> > So I have a hashmap that contains the projects that the checkbox should
> be checked for:
> >
> > Map<Integer, Project> userProjects = new HashMap<Integer, Project>();
> >
> > So far my .ftl looks like:
> >
> >   <#list projects as project>
> >                     <tr>
> >                         <td><label class="checkbox"><input
> > id="project-${project.id}" name="project-${project.id}"
> >
> > type="checkbox" />${project.name}</label></td>
> >                     </tr>
> >                 </#list>
> >
> > How can I make the checkbox 'checked' if the hashMap contains an entry?
>  The key is project.id
>
> There your run into the good old string-keys-only issue of FM... one
> of the main pains (the other being not supporting null as valid
> value).
>
> What I always did is not using the Default object-wrapper of FM, which
> is still like it is for backward compatibility. I have always used
> BeansWrapper instead (maybe extended by me) with
> setSimpleMapWrapper(true). It has a hack to work around the problem
> that `map[key]` expects strings; you can write map(key) instead, where
> `key` can be of any type. Then you can do `<#if
> userProjects(project.id)??> checked</#if>`.
>
> If changing the object wrapper is not an option (due to
> compatibility), for now you will have to create a
> TemplateMethodModelEx for this (`<#assign hasKey =
> 'com.example.HasKeyMethod'?new()>` in some commonly included/imported
> template and then `<#if hasKey(userProjects, project.id)>` in the
> normal templates). (Adding built-ins to do things like this is high on
> my TODO BTW.)
>
> --
> Best regards,
>  Daniel Dekany
>
>
>
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