[Geojson] response in two different geojson layers

[Pedro Costa]

My entire html code:

http://pastebin.com/q9E3BkwV




Em 26-07-2012 11:11, Pedro Costa escreveu:
> Hello list,
>
>
> I have one php file that send to my openlayers map a geojson layer  
> (lines).
> Now i am trying to add also a point layer. To do this I edit my php 
> file like this;
>
> http://pastebin.com/wLThyrg5
>
> The problem is that the two layers (points and lines) are in a unique 
> response so i get an error.
> My question what i have to do for the two layers go in separate 
> responses?
>
> In my html code i have this two data stores that have to receive the 
> layers:
>
>   // lines
>         var store = new GeoExt.data.FeatureStore({layer: route_layer, 
> fields: [{name: "id"}],
>             proxy: new GeoExt.data.ProtocolProxy({
>             protocol: new OpenLayers.Protocol.HTTP({
>             url: "./php/pacessiveis.php",
>             format: new OpenLayers.Format.GeoJSON({
>             internalProjection: epsg_900913,
>             externalProjection: epsg_900913   })})})});
>
>
>
>
>              // points
>         var store2 = new GeoExt.data.FeatureStore({layer: points_rota, 
> fields: [{name: "id"}],
>             proxy: new GeoExt.data.ProtocolProxy({
>             protocol: new OpenLayers.Protocol.HTTP({
>             url: "./php/pacessiveis.php",
>             format: new OpenLayers.Format.GeoJSON({
>             internalProjection: epsg_900913,
>             externalProjection: epsg_900913    })})})});
>
>
>
> Can somebody help me with that?
>
>
> Thanks
>
>
>
>
>
> Em 12-07-2012 00:25, Tim Schaub escreveu:
>> It would be quite a bit easier if you could paste the actual response
>> data somewhere (e.g. http://dpaste.org/)
>>
>> On Wed, Jul 11, 2012 at 11:04 AM, Pedro Costa 
>> <pedrocostaarma at sapo.pt> wrote:
>>> Thank you for the great explanations Michael and Tim.
>>>
>>> Now i don't get this error but another ! I'm still don't view route.
>>>
>>> Postgis returns the geojson with quoting i think this may be the error.
>>>
>>> I'm attached a ss of firebug.
>>>
>>> Anybody know the problem?
>>>
>>> thanks
>>>
>>>
>>>
>>>
>>> Em 11-07-2012 17:43, Michael Geary escreveu:
>>>
>>> The JSON.parse() error means just what it says: there is an unexpected
>>> characer in your JSON data.
>>>
>>> You didn't show us the JSON data itself, but the screenshot has 
>>> enough of a
>>> clue about what went wrong.
>>>
>>> Look at the call frame at the top of the stack: your nativeJSON() 
>>> function.
>>> The variable named 'a' contains your JSON data, yes?
>>>
>>> Look at that JSON string. It starts with several newlines 
>>> (Windows-style
>>> newlines with \r\n), followed by:
>>>
>>>      <--det...
>>>
>>> That is the beginning of an HTML comment. It is not JSON.
>>>
>>> Why is that in your JSON data? Look at your PHP file. It begins with 
>>> a <?php
>>> section, but then it *ends* that section with ?> followed by this HTML
>>> comment:
>>>
>>>      <!--determinar inicio e fim da rota-->
>>>
>>> There is your bad JSON data.
>>>
>>> The fix is easy. Here is what you should do whenever you write a PHP 
>>> file
>>> that generates JSON or any other non-HTML format:
>>>
>>> 1) Make sure the very first line of the file is <?php as you already 
>>> have.
>>>
>>> 2) Do not end the PHP code with ?> anywhere. Don't even use ?> at 
>>> the end of
>>> the file! Yes, that's right, don't use it at the end of the file. It 
>>> is not
>>> required, and using it at the end of the file is likely to add an
>>> unnecessary newline because in most editors you'll probably have a 
>>> newline
>>> after the ?>.
>>>
>>> Those two rules insure that your entire PHP file is pure PHP code 
>>> and does
>>> not have any spurious HTML code or HTML comments sneaking into your 
>>> output
>>> data.
>>>
>>> Of course, you will also now need to change your HTML comments to 
>>> PHP //
>>> comments.
>>>
>>> That should fix the JSON parsing error. At least it will insure that 
>>> what
>>> the PHP code outputs is what you expect it to output.
>>>
>>> -Mike
>>>
>>> On Wed, Jul 11, 2012 at 4:53 AM, Pedro Costa 
>>> <pedrocostaarma at sapo.pt> wrote:
>>>> Hello,
>>>>
>>>> This is my first mail to this list.
>>>>
>>>> I have a php script that have to return to client a geojson layer 
>>>> but it
>>>> gives me this error in firebug:
>>>>
>>>> JSON.parse: unexpected character (screen shot attached)
>>>>
>>>>
>>>> the php code is that:
>>>>
>>>> http://pastebin.com/tSCv5cnT
>>>>
>>>>
>>>> Can somebody help me with the error?
>>>>
>>>> thanks
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>> Geojson at lists.geojson.org
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>>>>
>>>
>>>
>>>
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>>>
>>
>>
>