Adding results sum (for a field)

[Andrea Borruso]

Hi all,

I'm sure this a simple task, but I do not find a solution.

I would like to add in the header of my exhibit html file, the results sum for a specified numeric field. What kind of object I must add?

I know there is "add" function, but I do not know how to write the snippe of code necessary to view the sum of field values for all filtered records.

Thank you,

a

[Axel Hecht]

I'd start with reverse-engineering http://code.google.com/p/simile-widgets/source/browse/exhibit/trunk/src/webapp/api/scripts/ui/widgets/collection-summary-widget.js.

Axel

2011/8/24 Andrea Borruso <abor...@gmail.com>

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[Andrea Borruso]

Hi Axel,
thank you.

I'm sure the code you link solves my problem, but I do not know how to use it. Some pratical advice for me?

Thank you again,

a

[Axel Hecht]

Doodled around a bit:

c=exhibit._uiContext.getCollection()
_s=Exhibit.ExpressionParser.parse('add( .unchanged )');

_s.evaluate({value:c.getRestrictedItems()},{value:'item'},'value',exhibit._database).values.toArray()

and you wanna refresh that in a listener like this:

c.addListener({onItemsChanged:function(){ console.log(_s.evaluate({value:c.getRestrictedItems()},{value:'item'},'value',exhibit._database).values.toArray())}})

Axel

2011/8/25 Andrea Borruso <abor...@gmail.com>

a

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[Antonio Falciano]

Il 25/08/2011 13.17, Andrea Borruso ha scritto:
> Hi Axel,
> thank you.
>
> I'm sure the code you link solves my problem, but I do not know how to
> use it. Some pratical advice for me?

Hi all,

@Andrea: the "add" snippet is missing here [1]. However it's quite
intuitive to reconstruct. Suppose you have three fields you want to sum
together (e.g. .a, .b and .c). The sum missing snippet would be:

<div ex:content="add(.a, .b, .c)"></div>

I have tested this function successfully in this working example [2] (see at
row 110) that you know quite well. ;)

Cheers,
Antonio

[1] http://simile.mit.edu/wiki/Exhibit/2.0/Functions
[2]
http://dl.dropbox.com/u/1583841/TANTO/where_to_sleep_in_turin/where_to_sleep_in_turin_add.htm

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Antonio Falciano
http://www.linkedin.com/in/antoniofalciano