Kevin Clark wrote:
>
> For a number of reasons, I would like to have the previous request's
> parameters available to the next request. For example, in the action
> attribute of <form> parameters (in my velocity templates), I specify the
> page that I want people to see upon completing the form correctly. In the
> action that processes the data in the form, I validate the data and return
> the user to the form with FormMessages if there were problems. Currently, I
> hard code the template name that I want to return the user to if there are
> problems in the action (this means that my action can only process data from
> a particular template).
You can specify the template to return to as a hidden field in the form
itself, there is no reason to modify anything to achieve this.
> I would also like to implement this because I am interested in
> how users navigate the site, and plan to keep track of this by the sequence
> of URLs they follow.
Turn on logging in Apache or whatever server you are using. ???
> So my question is, in Turbine, where would be the appropriate place to add
> this extra data to the RunData?
The appropriate place to place it would be the session as the data is
supposed to persist across requests. The user object which is loaded
into RunData at each request, data.getUser().getTemp(xxx) is a useful
abstraction for storing and retrieving items from the session using
get/setPerm methods will save the information in the database for
storage across sessions as well (as long as you make sure the objects
are serializable.)
An example that saves the current state information to return to the
present screen in the event that a user clicked the back button in a
protected form is available by looking at the sessionvalidators and
InvalidState screens.
It could be of some value to support a history so that <back> form
buttons could be made to work more easily. You will have to be clear
about how session data must be stored, for example in Users temp/perm
hashtables, so that it can be kept in the proper state as well.
John McNally
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