topic Using Post Method in QueryTask in ArcGIS JavaScript Maps SDK Questions

Using Post Method in QueryTask

mehmetyildiz — Tue, 19 Mar 2013 06:40:41 GMT

Hi,
i am developping a basic application in javascript. In my application i am using querytask. But problem is that my whereclause is too big. for example whereclause is like id in (id1,id2,id3,......,...,id200). So when i trying to query with this wherelcause even the request doesnt start. I searched on internet a little bit and everybody says that i need to use post method in my requests. But how can i use post methods. or if you know another solutions could you help me please?

Best Regards
mayildiz

Re: Using Post Method in QueryTask

JohnGravois — Tue, 19 Mar 2013 15:00:33 GMT

its not necessary to declare something explicitly in code to ensure that a POST is used for a request, the API does this automatically when appropriate.

the caveat is that posting across domains requires a proxy (unless both the browser and web server support CORS).

do you have a valid proxy referenced in your application?

Re: Using Post Method in QueryTask

mehmetyildiz — Tue, 19 Mar 2013 15:09:07 GMT

Thanx jgravois for your reply;

Soo i need to use proxy. But i want to ask a question. Proxy is only needed for security isn't it? I mean if my request is included too large query strings is that a security problem? Also want to ask that if i want to use proxy do i need to some changes on my mapservers or feature servers.
Best Regards

Re: Using Post Method in QueryTask

JohnGravois — Tue, 19 Mar 2013 18:16:19 GMT

in Flex and Silverlight, a proxy is only useful for working with secure services. in JavaScript it is also necessary if you'd like to POST across domains. no need to change anything in your map services. just check out the conceptual article about proxies that i linked to previously.

Re: Using Post Method in QueryTask

mehmetyildiz — Wed, 20 Mar 2013 06:53:52 GMT

Thanx you jgravois for your answer. i should prapare a proxy page :). i got it.