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How to pass a string using HTTP Service

Posted on 2008-10-06
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Last Modified: 2008-10-11
Hi, im trying to pass a string through to a Ruby on Rails backend, at the moment im using:
                    <mx:Button x="163" y="92" label="Search" width="199" click="searchByType.send('Hardware'); "/>
But its not working, anyone know how i can do this?
thanks
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Question by:Jonesey007
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LVL 23

Expert Comment

by:Siva Prasanna Kumar
ID: 22655978
can you check for the fault event and see the Fault message and post it here???

you can follow this example also

http://blog.flexexamples.com/2007/10/29/passing-parameters-to-an-httpservice/

but I think their is nothing wrong in the way you are doing it, and you are getting a n/w exception. check the  fault message you will get to know better
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Author Comment

by:Jonesey007
ID: 22656932
Thanks for the reply, here's the error im getting, it seems to think im passing Hardware as a variable and not as a String

ReferenceError: Error #1065: Variable Hardware is not defined.
      at global/flash.utils::getDefinitionByName()
      at mx.utils::DescribeTypeCache$/describeType()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\utils\DescribeTypeCache.as:89]
      at mx.utils::ObjectUtil$/getClassInfo()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\utils\ObjectUtil.as:780]
      at mx.rpc.http::HTTPService/send()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\http\HTTPService.as:701]
      at mx.rpc.http.mxml::HTTPService/send()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\http\mxml\HTTPService.as:217]
      at AssetDatabase/___AssetDatabase_Button4_click()[C:\Test\src\AssetDatabase.mxml:109]

Thanks

Pete
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LVL 23

Expert Comment

by:Siva Prasanna Kumar
ID: 22656995
ya the send method take a Object as param let me digg  in to it further

for now check it this works
add the following lines
   
<mx:Object id="myObj" name="Hardware" />

<mx:Button x="163" y="92" label="Search" width="199" click="searchByType.send(myObj); "/>
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Author Comment

by:Jonesey007
ID: 22693011
Hi, sorry for the long reply ive been away on business:
Unfortunately that didnt work, this is what I did,
private var myObj:Object = "Hardware";
<mx:Button x="163" y="92" label="Search" width="199" click="findByType.send(myObj); "/>
 This produced the same error as before ????
Thanks for the help,, really appreciate it
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LVL 23

Expert Comment

by:Siva Prasanna Kumar
ID: 22693085
NO Please try this directly

<mx:Object id="myObj" name="Hardware" />

else specify [Bindable] on top of the above myObject declaration. try and let me know.
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Author Comment

by:Jonesey007
ID: 22693126
hmm, i tried <mx:Object id="myObj" name="Hardware" /> originally but get a compile error stating (component declarations are not allowed here(note visual children must implement mx.core.ICIComponent))

So i tried declaring the object in the ActionScript area, ive now tried making it bindable and that didnt help either?
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Accepted Solution

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Siva Prasanna Kumar earned 500 total points
ID: 22693214
sorry there was a mistake, the way the http parameters are always passed in key value pairs

check this :), Please try that and let me know, I am outside on some business trip hence don't have my Flex installation for trying your solution , generally I provide full solution with code.

http://livedocs.adobe.com/flex/201/html/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Book_Parts&file=dataservices_099_09.html
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Author Comment

by:Jonesey007
ID: 22693431
Thats better, the pair option works fine, thanks for the help
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