Huh. I am still getting zero values added to the myStations object. I
think my syntax for adding to an object is wrong. Any suggestions
anyone?
On Feb 27, 8:43 am, tatlar <robertlnew...@gmail.com> wrote:
> 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.
