[OpenLayers-Users] OpenLayers.Request POST and IE 6/7 issues

[Zac Spitzer]

might also be IE's finicky old caching, try adding a random number to
the request string

z

On Tue, Oct 28, 2008 at 3:24 PM, Tim Schaub <tschaub at opengeo.org> wrote:
> Hey-
>
> Ian wrote:
>> I am using the print map code from the wiki and opening the printed
>> image in a new browser window (for testing I am just opening a Blackle
>> page):
>>
>> new OpenLayers.Request.issue({method:'POST', url:printURL,
>> params:{width:size.w, height:size.h, tiles:tiles_json}, callback:
>> function(request) {alert(request.status); alert(request.responseText);
>> window.open('http://www.blackle.com','_blank');}});
>
> Are you really intending to overload POST (by sending your data as a
> query string)?
>
> Try this:
>
> OpenLayers.Request.POST({
>     url: printURL,
>     data: OpenLayers.Util.getParameterString({
>         width: size.w, height: size.h, tiles: tiles_json
>     }),
>     callback: function(request) {
>         alert(request.status);
>         alert(request.responseText);
>     }
> })
>
> A few things to note:
>
> 1) The OpenLayers.Request functions are straight-up functions, not
> object constructors.  So, no need to use the "new" keyword.  Read
> http://trac.openlayers.org/wiki/Request for examples of their use.
>
> 2) The "params" option to a GET request gives you URI component encoding
> of your params property/value pairs in a GET query string.  This is not
> for use in other request methods.
>
> 3) The OpenLayers.Util.getParameterString function takes an object and
> serializes property/value pairs using form-encoding (with the exception
> of array values).  This is typically what you should be sending as the
> data in a POST request.  I have no idea if your service properly reads
> form encoded data from POST - but it should.
>
> 4) If the responseText is not html (like maybe pdf, png, or some other
> image type), you should not be stuffing it into a new window.  When IE
> supports the data: scheme, this could work.  I should probably read the
> wiki page that you reference, you might not be doing this at all.
>
> Anyway, if the above works, then you can do what you want to with the
> response.
>
> Tim
>
>
>>
>> All works as expected in Firefox. Internet Explorer 6 throws an "Unknown
>> name" error at a line outside of my js file, never alerts the status
>> code or responseText, and never opens a new window. Internet Explorer 7
>> returns status code 122, empty responseText, and then opens a new
>> window, which according to http://www.codebelay.com/blog/?p=194 occurs
>> because IE7 is limiting the size of GET strings. The solution is to do a
>> POST, which is what I'm doing...
>>
>> Has anyone else seen this behavior and found a solution?
>>
>>
>> ------------------------------------------------------------------------
>>
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>
>
> --
> Tim Schaub
> OpenGeo - http://opengeo.org
> Expert service straight from the developers.
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>



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Zac Spitzer -
http://zacster.blogspot.com (My Blog)
+61 405 847 168