Re: [Cppcms-users] how to parsing complex variables and its values in URL

[sergey l. <ccp...@gm...>]

Dear Stanimir! Dear All!

function request().get() doesn't return
std::multimap<std::string,std::string>.
probably you meant about request::getenv() function, that return
std::map<std::string,std::string>, but this function returns all CGI
variables.
http://cppcms.com/cppcms_ref/latest/classcppcms_1_1http_1_1request.html#a92bc86f75e4e1f9480967ce3fd1e4f65

when using request::getenv() function all variables of requested URL and
it's values are all in one QUERY_STRING key.
so parsing QUERY_STRING with such complex associative array notations is
not trivial task.
for example for one of the request QUERY_STRING looks like, and its
nightmare to parse variable unknown length and unknown of numbers of
variables string:

draw=1&columns[0][data]=0&columns[0][name]=&columns[0][searchable]=false&columns[0][orderable]=false&columns[0][search][value]=&columns[0][search][regex]=false&columns[1][data]=1&columns[1][name]=&columns[1][searchable]=true&columns[1][orderable]=true&columns[1][search][value]=&columns[1][search][regex]=false&columns[2][data]=2&columns[2][name]=&columns[2][searchable]=true&columns[2][orderable]=true&columns[2][search][value]=&columns[2][search][regex]=false&columns[3][data]=3&columns[3][name]=&columns[3][searchable]=true&columns[3][orderable]=true&columns[3][search][value]=&columns[3][search][regex]=false&columns[4][data]=4&columns[4][name]=&columns[4][searchable]=true&columns[4][orderable]=true&columns[4][search][value]=&columns[4][search][regex]=false&order[0][column]=1&order[0][dir]=asc&start=0&length=10&search[value]=&search[regex]=false&_=1403203600182

So I still looking for solution. Or should I create feature request?

Thanks in advance!


On Fri, Jun 20, 2014 at 9:13 AM, Stanimir Mladenov <
sta...@zo...> wrote:

> You have request().get() ->
> http://cppcms.com/cppcms_ref/latest/classcppcms_1_1http_1_1request.html#a36d72816584f61d3c5b7e510d61a5f58
>
> which returns std::multimap<std::string,std::string>
>
> The first is your parameter name and the second its value.
> Note that a parameter could be any type serialized as string. Like an ISO
> Date (2014-05-24).
> It is you responsibility to parse those values and convert them to your
> appropriate c++ representation, since CppCms can't know every type you need.
>
> Stanimir
>
>
> On Thu, Jun 19, 2014 at 10:12 PM, sergey lavrov <ccp...@gm...>
> wrote:
>
>> Dear All!
>>
>> I need to parsing complex variables and its values in URL which have the
>> form like:
>> variable[index1][index2]...[indexN]=X, where index1-N,X could be integer,
>> string, boolean.
>> For example, such notation have new version of jquery DataTables 1.10.0.
>> http://datatables.net/manual/server-side
>> Also such associative array notations using in variables in forms.
>>
>> What is the best way to parse such complex variables and its values?
>>
>> The best option for me is packing variables and it's values from URL to
>> c++ structures as is done in php and other languages.
>> Unfortunately cppcms::http::request or other classes haven't such
>> functionality.
>>
>> Thanks in advance!
>>
>>
>> ------------------------------------------------------------------------------
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>
>
> ------------------------------------------------------------------------------
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> Find What Matters Most in Your Big Data with HPCC Systems
> Open Source. Fast. Scalable. Simple. Ideal for Dirty Data.
> Leverages Graph Analysis for Fast Processing & Easy Data Exploration
> http://p.sf.net/sfu/hpccsystems
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