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From Alexander Gabriel <a...@barbalex.ch>
Subject Re: view crashes chrome
Date Wed, 06 Mar 2013 22:06:25 GMT
sorry. Passed parameters are in req.query and I guess it's clear passing
via url is the only way possible




***********************************************************



Alexander Gabriel
Wiesenstrasse 22
8800 Thalwil
079/ 372 51 64
alex@barbalex.ch
www.barbalex.ch



2013/3/6 Alexander Gabriel <alex@barbalex.ch>

> o.k., I found it in req.info.query
> is passing via url and accessing here the way to go?
>
>
>
>
> ***********************************************************
>
>
>
> Alexander Gabriel
> Wiesenstrasse 22
> 8800 Thalwil
> 079/ 372 51 64
> alex@barbalex.ch
> www.barbalex.ch
>
>
>
> 2013/3/6 Alexander Gabriel <alex@barbalex.ch>
>
>> O.k., returning the list of fields works like a charm.
>>
>> But how can I pass parameters to the list function?
>>
>> I need to pass filter criteria that cannot be planned ahead, so filtering
>> in the view is no option.
>>
>> Can the querystring be accessed from the list function? I've read it can
>> be over the req argument. Bot how?
>>
>>
>>
>>
>> ***********************************************************
>>
>>
>>
>> Alexander Gabriel
>> Wiesenstrasse 22
>> 8800 Thalwil
>> 079/ 372 51 64
>> alex@barbalex.ch
>> www.barbalex.ch
>>
>>
>>
>> 2013/3/6 Alexander Gabriel <alex@barbalex.ch>
>>
>>> phew. What great help!
>>>
>>> O.k., so basically I do all I did in memory on the server inside the
>>> list function. I'm not used to list functions (which is kind of obvious by
>>> no I'm afraid), so I'll get my head down and work on this. But it does
>>> sound as if it should work.
>>>
>>> Guys: You've earned a beer. Unless someone of you passes by Z├╝rich in
>>> Switzerland I'm afraid a virtual one will have to do... (and if so: do
>>> contact me!)
>>>
>>> Thanks a lot!
>>>
>>>
>>>
>>>
>>> ***********************************************************
>>>
>>>
>>>
>>> Alexander Gabriel
>>> Wiesenstrasse 22
>>> 8800 Thalwil
>>> 079/ 372 51 64
>>> alex@barbalex.ch
>>> www.barbalex.ch
>>>
>>>
>>>
>>> 2013/3/6 Matthieu Rakotojaona <matthieu.rakotojaona@gmail.com>
>>>
>>>> On Tue, Mar 5, 2013 at 5:22 PM, Alexander Gabriel <alex@barbalex.ch>
>>>> wrote:
>>>> > Seems like this really is a Chrome issue and has nothing to do with
>>>> > CouchDb.
>>>>
>>>> I think downloading the whole documents for each processing is a bad
>>>> idea, whatever the browser. You should try to better think your views;
>>>> Here are some simple thoughts on how to do it.
>>>>
>>>> Basically, you have a document with multiple fields. I'll take [0] as
>>>> an example doc and build upon it.
>>>>
>>>> (I have a question first: Why do you have 3 similar structures (I'm
>>>> talking about CSCF(2009), ZH Artengruppen and ZH GIS). When the user
>>>> wants a document, do you consider each of those as being different, or
>>>> should the 3 be merged and seen as 1 document in the output ?)
>>>>
>>>> The view you will need will look like this:
>>>>
>>>> for each doc:
>>>>    for each unitary output doc:  -> if the 3 docs are counted as 3
>>>> different ones
>>>>       for each field in Felder:
>>>>            emit(field, null)
>>>>
>>>> This will give you a huge list of all the fields available for each
>>>> document. You will then retrieve it from the client; use a reduce
>>>> function (like _count) to group the fields if they are similar.
>>>>
>>>> You now have a list of all possible fields on your client. You can
>>>> build the filter panel with this (ie you know what fields you can
>>>> filter from), and you can also prefill the export panel.
>>>>
>>>> Now, the user can select the fields he wants to use as a filtering.
>>>> Don't send anything to the server yet ! Just build a list of all the
>>>> fields you want to keep. In parallel, you can also build the list of
>>>> fields you want to export in the appropriate panel.
>>>>
>>>> Next step is to use a _list function to retrieve the documents that
>>>> have all the fields (and, if needed, transform to csv also in the
>>>> _list function). This _list function would accept a filter_list and an
>>>> export_list parameters, the first one being the fields a doc must have
>>>> to be exported, and the second one the list of fields to be exported.
>>>> You can then convert your documents and send them back to the client.
>>>>
>>>> [0]
>>>> http://www.barbalex.iriscouch.com/_utils/document.html?artendb/00005A48-816B-4A30-842F-3B1A5DAAAAC3
>>>>
>>>> --
>>>> Matthieu RAKOTOJAONA
>>>>
>>>
>>>
>>
>

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