Re: [limesurvey-developers] extend Validation using ExpressionManager

[Thomas W. M. M. M. <tw...@co...>]

All-

I'm not sure what the "question attribute interface" is.  Where can I find
documentation about it (or code for it)?  Is it also called something else?

/Tom


On Mon, Jul 4, 2011 at 10:53 AM, Marcel Minke (Limesurvey) <
mar...@li...> wrote:

> **
> Hi everybody,
>
> see answers below...
>
> Am 04.07.2011 16:03, schrieb Thomas White, MD, MS, MA:
>
> All-
>
> Before proposing a new user_patch, is there a way to do this -
> http://bugs.limesurvey.org/view.php?id=5288?
>
> For numerical input, I've had to support optional min and max values, plus
> an optional list of allowable but exception values.  For example, I might
> have these  questions:
>
> q1_yearOfBirth:  What year were you born?
> q2_age:  {year(today()) - q1_yeaerOfBirth}
> q3_yearsOfSchool:   How many years of schooling have you had?
>
> q2 computes the person's age (it is question type = Equation)
> q3 asks how many years of school attended, but should have validation
> ranging from 0 - (q2_age - 5).
>
> In addition, I want options for q3_yearsOfSchool to include (77,88,99) -
> those are special values for "Unknown", "Refused", and "Not Applicable"
>
> Is there a way to do this in  LimeSurvey?
>
> Currently I would recommend users to do such age calculation by using
> Javascript. There are no in-build features for this.
>
>
> If not, I could add a user_path that would include:
> (1) min_value_expr - be an Equation, so could use numbers (like
> min_num_value_n), but would be parsed by ExpressionManager so could be a
> complex Expression.
> (2) max_value_expr - also an Equation
> (3) other_allowed_values_expr - a comma-delimited list of other allowed
> values, each of which could be  an Equation
>
> I think it should be easy to use question attribute interface to set such
> values. The expression manager then just needs to read this out.
>
> Best regards,
> Marcel
>
>
> This same approach could be used to validate dates and strings.
>
> /Tom
>
>
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>
> ------------------------------------------------------------------------------
> All of the data generated in your IT infrastructure is seriously valuable.
> Why? It contains a definitive record of application performance, security
> threats, fraudulent activity, and more. Splunk takes this data and makes
> sense of it. IT sense. And common sense.
> http://p.sf.net/sfu/splunk-d2d-c2
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