Get one of requested hidden input values,where the key is similar

Question

JSF:

<h:form>
    <h:inputHidden id="promo" value="promo-motopair"/>
    <h:commandButton value="#{m.buy}" action="#{showProducts.buy}"/>
</h:form>


<h:form>
    <h:inputHidden id="promo" value="promo-northduck"/>
    <h:commandButton value="#{m.buy}" action="#{showProducts.buy}"/>
</h:form>

Bean, where get clicked id:

String promo = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("promo");

Can't get it because id is equal promo, but prepended with prefix, looks like j_idt40:promo

How to handle such situation?

I need get item by key. I suppose,that key(which is id in inputhidden) should be single. I should rely on promo value only.

@Ravi: this would in OP's case result in [invalid](http://validator.w3.org) HTML. — BalusC, May 25 '12 at 13:48
the main issue here that I see,that I use same id several times. From other side I can use `containsKey()` or `values()` method,but looks not gracefully IMHO — sergionni, May 25 '12 at 13:48
@BalusC, ya I did not see that there are two components with the same Id. — Ravi Kadaboina, May 25 '12 at 14:05
@Ravi: the whole question is about exactly that, how'd you miss that? ;) — BalusC, May 25 '12 at 14:05

score 3 · Accepted Answer · answered May 25 '12 at 13:47

3

Don't use <h:inputHidden>. It's unsuitable for your particular functional requirement. Just use standard HTML <input type="hidden">.

<h:form>
    <input type="hidden" name="promo" value="promo-motopair"/>
    <h:commandButton value="#{m.buy}" action="#{showProducts.buy}"/>
</h:form>

<h:form>
    <input type="hidden" name="promo" value="promo-northduck"/>
    <h:commandButton value="#{m.buy}" action="#{showProducts.buy}"/>
</h:form>

It's in a request scoped bean by the way also available by just

@ManagedProperty("#{param.promo}")
private String promo;

without the need to manually grab it from the request parameter map.

answered May 25 '12 at 13:47

BalusC

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BalusC,hi .Thank you for hint,and the problem is showProducts bean is `SessionScoped` – sergionni May 25 '12 at 14:02
1

Use `` then. See also http://stackoverflow.com/questions/6377798/what-can-fmetadata-and-fviewparam-be-used-for You can also just stick to the request parameter map grabbing approach :) – BalusC May 25 '12 at 14:02
@BalusC: How about getting the component from ActionEvent and then getParent#findComponent("promo")? – Ravi Kadaboina May 25 '12 at 14:06

Get one of requested hidden input values,where the key is similar

1 Answers1