infoTemplate - content from a function - field aliases

TracySchloss — Tue, 18 Nov 2014 21:04:04 GMT

I have an infoTemplate with a function for generating the content. I'd like to be able to use this same function again for my click event on my grid. The problem is that I have some field aliases. For my map click, it finds the alias fields just fine. When I do the grid click, I'm executing a queryTask and the graphic result doesn't know about the field aliases. I've read through another thread this is 'expected behavior', that the identifyTask uses the aliases just fine.

I have multiple layers I want to be able to click on on the map, but only one layer that's populated in a grid. At the moment, that layer is loaded as a ArcGISDynamicMapServiceLayer. Would it help to load this as a featureLayer instead and do a featureLayer.selectFeatures? Do featureLayers honor aliases any better than a queryTask does?

I've created a series of arrays to use for each layer, since I want to control which fields will appear in the infoTemplate:

      var pubSchoolAtt = ['OBJECTID','Facility','Address', 'City','Phone', 'County', 'Enrollment', 'Teachers', 'BeginningGrade', 'EndingGrade'];
      var schoolDistAtt = ['OBJECTID','District Name', 'District Code'];
      var legisDistAtt = ['OBJECTID','District'];

My infoTemplate is defined as

   generateInfoTemplate = new InfoTemplate();
   generateInfoTemplate.setContent(generateWindowContent);   
     
function generateWindowContent(graphic) {
     var attString = "";
   var layerName = graphic.attributes.layerName;//case sensitive field names
  if (!layerName){
    layerName = "School";
  }
   var fieldNamesArr = [];
for (fieldName in graphic.attributes) {
    if (graphic.attributes.hasOwnProperty(fieldName) && fieldName !=='Shape' && fieldName !== 'Shape.area' && fieldName !== 'Shape.len') {
        fieldNamesArr.push(fieldName);
    }
}   
    switch(layerName){
      case "House":
        attString = createAttRows(graphic, legisDistAtt);
        break;
      case "Senate":
      attString = createAttRows(graphic, legisDistAtt);
      break;
      case "School":
       attString = createAttRows(graphic, pubSchoolAtt);
       break;
      case "Public School":
      attString = createAttRows(graphic, pubSchoolAtt);
      break;
      case "School District":
         attString = createAttRows(graphic, schoolDistAtt);
      break;
      default:
       attString = createAttRows(graphic, fieldNamesArr, layerName);
    }
   initTable = "<b class = 'infoHeader'>"+ layerName +" Information</b>";
   initTable = initTable + "<table id='infoWindowTable' data-dojo-type='dgrid/OnDemandGrid',' data-dojo-props='class:'infoTable'' ><tr><th></th><th></th></tr>"; 
   initTable = initTable + attString;
    
   initTable = initTable + "</table>";
     return initTable;
}

Here's my grid click event

function highlightGridSelection(event, dGrid) {
    var row = dGrid.row(event);
    var query = new Query();
    var schName = [row.data.facility];
    var cityName = [row.data.city];
    query.where = "Facility = '" + schName + "' and " + "City = '" + cityName + "'";
    query.returnGeometry = true;
    query.outFields = ["*"];
    query.outSpatialReference = spatialReference;
    var queryTask = new QueryTask(educationLayer.url+"/0");
    queryTask.execute(query, highlightResults);
}  
function highlightResults(results) {
    if (results) {
      var feature = results.features[0];//already esri.Graphic
 //     var featType = feature.geometry.type;
      var graphic = new Graphic(feature.geometry, highlightMarkerSymbol);
      feature.setInfoTemplate(generateInfoTemplate);
      map.infoWindow.setFeatures(results.features);
      map.infoWindow.show(feature.geometry);     
     map.graphics.add(graphic);
    } else {
        console.log("No records by that ID");
    }
}

Does anybody have any clever ideas on how I can my one function work for both type of events?

Re: infoTemplate - content from a function - field aliases

KenBuja — Tue, 18 Nov 2014 21:49:31 GMT

I had a similar issue with the Query returning the field names and the Identify returning field aliases. I was trying to get an attribute from a feature that could be returned from either a Query or an Identify. I resolved this by first attempting to use the field alias on a returned feature. If that returned a null, then I used the field name.

topic Re: infoTemplate - content from a function - field aliases in ArcGIS JavaScript Maps SDK Questions

infoTemplate - content from a function - field aliases

Re: infoTemplate - content from a function - field aliases