default value of input field not of string type - how to set in JSF?

[M Rather <mr...@definedlogic.com>]

Hello,

I want a hidden input field with a default value put in JSF page. The 
value that the input field is tied to is of type 'ContentType' (object), 
so I use a converter to convert the string to the object as:

<h:inputHidden value="#{contentForm.content.type}" id="type" >
    <f:converter converterId="converters.ContentTypeConverter"  />
 </h:inputHidden>

Since the inputHidden is bound to "contentForm.content.type" by virtue 
of me assigning it to the value attribute, and since the content.type by 
default is null, so the input is rendered as:

<input id="contentForm:type" type="hidden" value="" name="contentForm:type"/>

note: value="" I would like to have it defaulted to value="MENU_ITEM" as:

<input id="contentForm:type" type="hidden" value="MENU_ITEM" name="contentForm:type"/>

but, if I change the h:inputHidden to value="MENU_ITEM",  I do get the 
desired input tag, but the value is not then assigned to content object 
upon submission.

So, if I use value="contentForm.content.type", I do get proper linking 
with backing bean properties, but NO default value. and I if provide a 
text value like value="MENU_ITEM",  I do get the proper default value, 
but I do NOT get the linking with backing bean. How can this be resolved?

Thanks
MRather

Re: default value of input field not of string type - how to set in JSF?

[Andrew Robinson <an...@gmail.com>]

3) store the default as a parameter on the converter an use a Tag or
TagHandler to build the converter instead of loading it by ID.

On Dec 26, 2007 2:01 PM, M Rather <mr...@definedlogic.com> wrote:
>
>  Andrew:
>
>  As for first suggestion:
>
>  1) Have the converter use a default value when there is no value
>  It is more like suggested default value for this form, it could be a
> different default in a different form. It is such in my case, where a
> content created from one link defaults to MENU_ITEM, and if content is
> created from another link it defaults to another value. So converter may not
> be a good place to set it, as the same converter will get used at both
> places.
>
>  as for the second suggestion:
>
>  2) Have the backing bean value never be null (always require that it is
> set)
>  I could set the defaults in the managed bean as 'usually' different forms
> will have separate 'managed beans' and defaults could be set there.. But,
> for this option there is a 'what if' question, what if I am using the same
> form+managed bean from different links which should result in defaults of
> different types? As I am writing this, just thinking out loud, it is
> possible that the different links send params to the managed bean with
> default values, and the managed bean sets it in 'add' action method before
> the form is drawn. But the 'what if' question still remains, what if I want
> a default value to be supplied from jsf for each form (if different forms
> are using the same managed bean, or Is that not a good idea?)? Is it not
> possible?
>
>  Thanks
>  MRather
>
>
>
>  Andrew Robinson wrote:
>  1) Have the converter use a default value when there is no value
> or
> 2) Have the backing bean value never be null (always require that it is set)
>
> On Dec 26, 2007 10:48 AM, M Rather <mr...@definedlogic.com> wrote:
>
>
>  Hello,
>
> I want a hidden input field with a default value put in JSF page. The
> value that the input field is tied to is of type 'ContentType' (object),
> so I use a converter to convert the string to the object as:
>
> <h:inputHidden value="#{contentForm.content.type}" id="type" >
>  <f:converter converterId="converters.ContentTypeConverter" />
>  </h:inputHidden>
>
> Since the inputHidden is bound to "contentForm.content.type" by virtue
> of me assigning it to the value attribute, and since the content.type by
> default is null, so the input is rendered as:
>
> <input id="contentForm:type" type="hidden" value=""
> name="contentForm:type"/>
>
> note: value="" I would like to have it defaulted to value="MENU_ITEM" as:
>
> <input id="contentForm:type" type="hidden" value="MENU_ITEM"
> name="contentForm:type"/>
>
> but, if I change the h:inputHidden to value="MENU_ITEM", I do get the
> desired input tag, but the value is not then assigned to content object
> upon submission.
>
> So, if I use value="contentForm.content.type", I do get proper linking
> with backing bean properties, but NO default value. and I if provide a
> text value like value="MENU_ITEM", I do get the proper default value,
> but I do NOT get the linking with backing bean. How can this be resolved?
>
> Thanks
> MRather
>
>
>
>
>

Re: default value of input field not of string type - how to set in JSF?

[Andrew Robinson <an...@gmail.com>]

1) Have the converter use a default value when there is no value
or
2) Have the backing bean value never be null (always require that it is set)

On Dec 26, 2007 10:48 AM, M Rather <mr...@definedlogic.com> wrote:
> Hello,
>
> I want a hidden input field with a default value put in JSF page. The
> value that the input field is tied to is of type 'ContentType' (object),
> so I use a converter to convert the string to the object as:
>
> <h:inputHidden value="#{contentForm.content.type}" id="type" >
>     <f:converter converterId="converters.ContentTypeConverter"  />
>  </h:inputHidden>
>
> Since the inputHidden is bound to "contentForm.content.type" by virtue
> of me assigning it to the value attribute, and since the content.type by
> default is null, so the input is rendered as:
>
> <input id="contentForm:type" type="hidden" value="" name="contentForm:type"/>
>
> note: value="" I would like to have it defaulted to value="MENU_ITEM" as:
>
> <input id="contentForm:type" type="hidden" value="MENU_ITEM" name="contentForm:type"/>
>
> but, if I change the h:inputHidden to value="MENU_ITEM",  I do get the
> desired input tag, but the value is not then assigned to content object
> upon submission.
>
> So, if I use value="contentForm.content.type", I do get proper linking
> with backing bean properties, but NO default value. and I if provide a
> text value like value="MENU_ITEM",  I do get the proper default value,
> but I do NOT get the linking with backing bean. How can this be resolved?
>
> Thanks
> MRather
>