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Expression Manager: Nested Equations?

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11 years 2 months ago #91272 by DenisChenu
Replied by DenisChenu on topic Expression Manager: Nested Equations?

TMSWhite wrote: As far as I remember, 1.91 did also create a varchar(1) for each boilerplate question even though it could never contain anything. I left it in for backwards compatability.

However, I'd vote to remove those columns in version 2.1

/Tom

I rememeber some time when boilerplate question type doesn't create a column, maybe in 1.87 then ???

2.0 still create a column. And like Thomas: vote to "don't add it".

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11 years 2 months ago #91278 by Mazi
Replied by Mazi on topic Expression Manager: Nested Equations?
Thanks for your valuable feedback, Fred.

It's nice to hear that EM can handle that large amount of data and expressions and that the Excel import works so great.

Best regards/Beste Grüße,
Dr. Marcel Minke
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Contact: marcel.minke(at)survey-consulting.com
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  • Fred01
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11 years 2 months ago #91716 by Fred01
Replied by Fred01 on topic Expression Manager: Nested Equations?
I think there may be a bug in Expression Manager number_format. If you have an equation with result is a number greater than minus1000 or less than 1000, and try to number_format () it displays NAN. So any 1, 2, or 3-digit positive or negative and I get the NAN.

(I would report a bug but my account never works on the bugs site)

Funny I came across this php bug discussion about PHP number_format where Rasmus himself comments and gets in an argument with users
bugs.php.net/bug.php?id=50696
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11 years 2 months ago #91722 by Mazi
Replied by Mazi on topic Expression Manager: Nested Equations?
A very "interesting" discussion at the PHP bugtracker...

Fred, can you attach a sample survey? I'm not sure how this is implemented in detail at the EM but would like to test before submitting a ticket. Maybe the code is handled by PHP after being parsed by EM and thus the PHP bug causes the problem (just guessing))?!

Best regards/Beste Grüße,
Dr. Marcel Minke
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11 years 2 months ago #91740 by DenisChenu
Replied by DenisChenu on topic Expression Manager: Nested Equations?
It's not a number_format (not really).

number_format(10) return 10.

But if you do :
"some text"+number_format(10) : EM test if ("some text" AND number_format(10)) are string. And seems number_format(10) are not a string.

Think EM must do this:

10+10 = 20
"some text"+10 = "some text10".

And have a solution to do:
"10"+"10"="1010"

ACtually, EM test is strval(floatval("10"))=="10" and put is numeric if yes: think there are a conceptual bug here.

Denis

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  • Fred01
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11 years 2 months ago #91770 by Fred01
Replied by Fred01 on topic Expression Manager: Nested Equations?
Thanks you guys!

A little bit off-topic, but I talked with Denis about creating a "format_money" function for EM. This would open up LimeSurvey to the wonderful world of finance. We need something that is like Excel currency masks and formatting.

Start with: -1234567.89
Turn it into: $(1,234,568) -- for example. there could be other

Currently you can write a function in EM to do this but there are a lot of steps. Especially when you can't count on number_format() even.
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11 years 2 months ago #91772 by Fred01
Replied by Fred01 on topic Expression Manager: Nested Equations?
Also correction from earlier, it is not really a BUG in EM. Just a different expectation of how something will work.

Here is a pertinent quote from that PHP.net bug discussion:

[2010-01-08 23:20 UTC] rasmus@php.net
Wow, a classic case of how not to treat unpaid volunteers who provide
critical pieces of your money-making infrastructure.
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11 years 2 months ago #91787 by DenisChenu
Replied by DenisChenu on topic Expression Manager: Nested Equations?
Think it's a bug or misfeature in EM.

bugs.limesurvey.org/view.php?id=7236

Denis

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