Thanks Stephan - I will take a look at your suggestion. Thanks for the
heads up about the return statement - PHP function habits die hard....
On Feb 27, 12:38 am, Stephan Veigl <stephan.ve...@gmail.com> wrote:
> Hi,
>
> first of all, AJAX is _asynchronous_, do you have any mechanism that
> ensures that the stations callback is executed _before_ the
> _dataloggers_ callback? (e.g. requesting datalogger once myStations
> has been filled)
>
> If you use myStations in both callbacks is should be a global
> variable. (I know, global variables are no good programming practice.
> So either put all your global variables into one global object to
> reduce namespace pollution or have it global in the scope of the
> callbacks).
>
> Would the additional "snet": "TA" variable hurt in myStations?
> If not, simply link the json result to myStations:
>
> var myStations = {} ;
> $.getJSON("path/to/stations.js", function(stalist) {
> $.each(stalist.stations, function(staname,stavalues){
> var myStaTitle = stavalues.snet+"_"+staname ;
> myStations[myStaTitle] = stavalues;
> });
>
> });
>
> I also noticed that you have a return statement in your callback. For
> whom this return should be? The callback is executed within jQuery on
> success of your AJAX request. jQuery does not know of your return
> value.
>
> by(e)
> Stephan
>
> 2009/2/27 tatlar <robertlnew...@gmail.com>:
>
>
>
> > Attempt to post again.....
>
> > Hi All,
>
> > I have a JSON object (called 'dataloggers') that I am retrieving via
> > $.getJSON, and then creating a <table> dynamically with the results .
> > I can parse it just fine with $.each().
>
> > The structure looks like this:
>
> > {
> > "dataloggers": {
> > "TA_124A": {
> > "values": {
> > "one": "wake",
> > "two": "up",
> > "three": "time",
> > "four": "to",
> > "five": "die"
> > }
> > },
> > "TA_109C": {
> > "values": {
> > "one": "this",
> > "two": "is",
> > "three": "not",
> > "four": "a",
> > "five": "test"
> > }
> > }
> > }
> > }
>
> > Here is the code I have for processing the 'dataloggers' JSON object:
>
> > $.getJSON("path/to/dataloggers.js", function(dlmon) {
> > $.each(dlmon.dataloggers, function(dlname,arr){
> > var tBodyRow = "<tr>";
> > tBodyRow += '<td>'+dlname+'</td>' ;
> > $.each(arr.values, function(vKey,vVal){
> > tBodyRow += '<td>'+vKey+': '+vVal+'</td>' ;
> > });
> > tBodyRow += "</tr>" ;
> > $("table#dataloggers tbody").append(tBodyRow);
> > });
> > });
>
> > This outputs a table:
>
> > <table id="dataloggers">
> > <thead></thead>
> > <tfoot></tfoot>
> > <tbody>
> > <tr>
> > <td>TA_124A</td>
> > <td>one: wake</td>
> > <td>two: up</td>
> > <td>three: time</td>
> > <td>four: to</td>
> > <td>five: die</td>
> > </tr>
> > <tr>
> > <td>TA_109C</td>
> > <td>one: this</td>
> > <td>two: is</td>
> > <td>three: not</td>
> > <td>four: a</td>
> > <td>five: test</td>
> > </tr>
> > </tbody>
> > </table>
>
> > I have another JSON object (called 'stations') that I am retrieving
> > via $.getJSON(), that has the following structure:
>
> > {
> > "stations":{
> > "124A":{
> > "commtype":"slink2orb",
> > "provider":"orb",
> > "snet": "TA"
> > },
> > "109C":{
> > "commtype": "vsat",
> > "provider": "Verizon",
> > "snet": "TA"
> > }
> > }
> > }
>
> > What I need to do is process the 'stations' JSON object and add the
> > values returned to the processing of the 'dataloggers' object with the
> > $.each() function, so that the HTML <table> output now looks like
> > this:
>
> > <table id="dataloggers">
> > <thead></thead>
> > <tfoot></tfoot>
> > <tbody>
> > <tr>
> > <td>TA_124A</td>
> > <td>one: wake</td>
> > <td>two: up</td>
> > <td>three: time</td>
> > <td>four: to</td>
> > <td>five: die</td>
> > <td>commtype: slink2orb</td>
> > <td>provider: orb</td>
> > </tr>
> > <tr>
> > <td>TA_109C</td>
> > <td>one: this</td>
> > <td>two: is</td>
> > <td>three: not</td>
> > <td>four: a</td>
> > <td>five: test</td>
> > <td>commtype: vsat</td>
> > <td>provider: Verizon</td>
> > </tr>
> > </tbody>
> > </table>
>
> > You will notice that the 'stations' object has a key-val pair of
> > "snet":"TA", which makes it easy for me to match the 'dataloggers' key
> > by just concatenating the 'stations' key with the 'snet' value. So
> > what I *think* I need to do is process the 'stations' JSON object
> > first, and create a new jQuery object on the fly with all the values I
> > need, which I then pass into the $.each() processing of the
> > 'dataloggers' object. I tried to do this:
>
> > $.getJSON("path/to/stations.js", function(stalist) {
> > var myStations = {} ;
> > $.each(stalist.stations, function(staname,stavalues){
> > var myStaTitle = stavalues.snet+"_"+staname ;
> > var myStaVals = { "commtype": stavalues.commtype, "provider":
> > stavalues.provider } ;
> > var staObj.push(myStaTitle) = myStaVals ; // could be very
> > wrong to use the push() array method??
> > });
> > return myStations ;
> > });
>
> > I would have thought that I could then pass this newly created jQuery
> > object ('myStations') to the processing of the 'dataloggers' JSON
> > object, using the 'myStaTitle' match with the 'dlname' key. But every
> > attempt I have made has failed. For whatever reason (very likely my
> > syntax) I cannot create my custom jQuery object and then pass it on.
> > Something like?:
>
> > $.getJSON("path/to/dataloggers.js", function(dlmon) {
> > $.each(dlmon.dataloggers, function(dlname,arr){
> > var tBodyRow = "<tr>";
> > tBodyRow += '<td>'+dlname+'</td>' ;
> > $.each(arr.values, function(vKey,vVal){
> > tBodyRow += '<td>'+vKey+': '+vVal+'</td>' ;
> > });
>
> > // insert here?? why does this not work??
> > tBodyRow += '<td>commtype: '+myStations.dlname.commtype+'</
> > td>' ;
> > tBodyRow += '<td>provider: '+myStations.dlname.provider+'</
> > td>' ;
>
> > tBodyRow += "</tr>" ;
> > $("table#dataloggers tbody").append(tBodyRow);
> > });
> > });
>
> > I hope this all makes sense. If anyone could give me a shove in the
> > right direction, I would be much obliged. All help much appreciated
> > and thanks in advance.
