topic Re: query is undefined I built this code from this example page here on how to use a querytask. I changed the fieldname being used in the where clause because the field in the example doesn't exist. I tested my in ArcGIS JavaScript Maps SDK Questions

query is undefined I built this code from this example page here on how to use a querytask. I changed the fieldname being used in the where clause because the field in the example doesn't exist. I tested my

lasinh — Mon, 18 Aug 2014 07:01:53 GMT

require([

"esri/map",

"esri/layers/ArcGISDynamicMapServiceLayer",

"dojo/dom",

"dojo/on",

"esri/tasks/QueryTask",

"esri/tasks/query",

"esri/symbols/SimpleMarkerSymbol",

"esri/InfoTemplate",

"dojo/_base/Color",

"dojo/domReady!"],

function (Map,

ArcGISDynamicMapServiceLayer,

dom,

on,

QueryTask,

Query,

SimpleMarkerSymbol,

InfoTemplate,

Color,

domReady) {

map = new Map("map");

var layer = new ArcGISDynamicMapServiceLayer("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer");

map.addLayer(layer);

var pop = dojo.byId('search-text').value;

on(dojo.byId('search-button'), "click", executeQueryTask(pop));

//initialize query task

queryTask = new QueryTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0");

//initialize query

query = new esri.tasks.Query();

query.returnGeometry = true;

query.outFields = ["CITY_NAME", "STATE_NAME", "POP1990"];

//initialize InfoTemplate

infoTemplate = new InfoTemplate("${CITY_NAME}", "Name : ${CITY_NAME}<br/> State : ${STATE_NAME}<br />Population : ${POP1990}");

//create symbol for selected features

symbol = new SimpleMarkerSymbol();

symbol.setStyle(SimpleMarkerSymbol.STYLE_SQUARE);

symbol.setSize(10);

symbol.setColor(new Color([255, 255, 0, 0.5]));

function executeQueryTask(population) {

//set query based on what user typed in for population;

! !

query.where = "POP1990 >"+ population;

//execute query

queryTask.execute(query, showResults);

}

function showResults(featureSet) {

//remove all graphics on the maps graphics layer

map.graphics.clear();

//Performance enhancer - assign featureSet array to a single variable.

var resultFeatures = featureSet.features;

//Loop through each feature returned

for (var i = 0, il = resultFeatures.length; i < il; i++) {

//Get the current feature from the featureSet.

//Feature is a graphic

var graphic = resultFeatures;

graphic.setSymbol(symbol);

//Set the infoTemplate.

graphic.setInfoTemplate(infoTemplate);

//Add graphic to the map graphics layer.

map.graphics.add(graphic);

}

});

</script>

Re: query is undefined I built this code from this example page here on how to use a querytask. I changed the fieldname being used in the where clause because the field in the example doesn't exist. I tested my

DanPatterson_Retired — Mon, 18 Aug 2014 07:07:45 GMT

You title should be in the body of the message, it is far too long and not searchable. Use appropriate tags to facilitate searching as well

Re: query is undefined I built this code from this example page here on how to use a querytask. I changed the fieldname being used in the where clause because the field in the example doesn't exist. I tested my

lasinh — Mon, 18 Aug 2014 07:17:49 GMT

it is not work. query is undefinded

Re: query is undefined I built this code from this example page here on how to use a querytask. I changed the fieldname being used in the where clause because the field in the example doesn't exist. I tested my

RobertScheitlin__GISP — Mon, 18 Aug 2014 12:00:35 GMT

Ia,

In your code you never init a var called query. You have the proper require and the proper require alias for Query but you never var query in your code.

See line 24 on the code below.

<script type="text/javascript">
        require([
      "esri/map",
      "esri/layers/ArcGISDynamicMapServiceLayer",
    "dojo/dom",
      "dojo/on",
      "esri/tasks/QueryTask",
      "esri/tasks/query",
      "esri/symbols/SimpleMarkerSymbol",
      "esri/InfoTemplate",
      "dojo/_base/Color",
      "dojo/domReady!"],
      function (Map,
        ArcGISDynamicMapServiceLayer,
        dom,
          on,
          QueryTask,
          Query,
          SimpleMarkerSymbol,
            InfoTemplate,
            Color,
            domReady) {
          map = new Map("map");
          var query, queryTask, infoTemplate, symbol;
          var layer = new ArcGISDynamicMapServiceLayer("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer");
          map.addLayer(layer);
          var pop = dojo.byId('search-text').value;
          on(dojo.byId('search-button'), "click", executeQueryTask(pop));


          //initialize query task
          queryTask = new QueryTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0");
          //initialize query
          query = new esri.tasks.Query();
          query.returnGeometry = true;
          query.outFields = ["CITY_NAME", "STATE_NAME", "POP1990"];


          //initialize InfoTemplate
          infoTemplate = new InfoTemplate("${CITY_NAME}", "Name : ${CITY_NAME}<br/> State : ${STATE_NAME}<br />Population : ${POP1990}");


          //create symbol for selected features
          symbol = new SimpleMarkerSymbol();
          symbol.setStyle(SimpleMarkerSymbol.STYLE_SQUARE);
          symbol.setSize(10);
          symbol.setColor(new Color([255, 255, 0, 0.5]));




          function executeQueryTask(population) {


              //set query based on what user typed in for population;
! !
              query.where = "POP1990 >"+ population;


              //execute query
              queryTask.execute(query, showResults);
          }
          function showResults(featureSet) {
              //remove all graphics on the maps graphics layer
              map.graphics.clear();


              //Performance enhancer - assign featureSet array to a single variable.
              var resultFeatures = featureSet.features;


              //Loop through each feature returned
              for (var i = 0, il = resultFeatures.length; i < il; i++) {
                  //Get the current feature from the featureSet.
                  //Feature is a graphic
                  var graphic = resultFeatures;
                  graphic.setSymbol(symbol);


                  //Set the infoTemplate.
                  graphic.setInfoTemplate(infoTemplate);


                  //Add graphic to the map graphics layer.
                  map.graphics.add(graphic);
              }
          }
      });     
      </script>