constructed model, per node permissions via webservice

Hi there,

I've got some data that'd be loaded -- say a bunch of shopping cart items that belong to a business (rather than individual).

What I'm need to do is filter the list displayed having done a web service call per item to determine the permissions for the current user.

How would I go about that? Essentially, how do I apply the below to a list of items individually?


<xforms:instance id="props">
        <parameters>
                <HasWriteAccess />
        </parameters>
</xforms:instance>

<xforms:action ev:event="xforms-model-construct-done">
        <xforms:send submission="check-permissions" />
</xforms:action>

<xforms:submission id="check-permissions" method="get" serialization="none"
        resource="..."
        replace="none" f:url-type="resource">
        <xforms:action ev:event="xforms-submit-error">
            <xforms:setvalue ref="instance('props')/HasWriteAccess" value="'false'" />
        </xforms:action>
        <xforms:action ev:event="xforms-submit-done">
             <xforms:setvalue ref="instance('props')/HasWriteAccess" value="'true'" />
        </xforms:action>
    </xforms:submission>


cheers,
Lachlan

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Hi Lachlan,

Are you saying that the "check-permissions" submission would need to be called once per "shopping card item"? (I have a feeling that this way of doing it might be inefficient, but this is another question.) Then you'd need to iterate over the items in the shopping card, and for each item run the submission with something like:

<xf:send iterate="/shopping-card/item" submission="check-permissions">
    <xf:context name="item" select="."/>
</xf:send>

And in <xf:submission id="check-permissions"> you'll need to send some information about the current item so the service can do its job, which you can do by accessing the current item with event('item').

Alex