case sensitive attribute name

BhavinSanghani

Is there any way to fetch attribute value using case insensitive attribute name? e.g. Following example is using objectIdField in the code.

 

Select with Feature Layer | ArcGIS API for JavaScript

 

inBuffer.push(feature.attributes[featureLayer.objectIdField]);

 

Not sure, how objectIdField is configured here but similar way, if I want to access any other field in the attributes regardless of the case then how can I do that?

RiyasDeen

Hi Bhavin,

You'll need another function which will do a case insensitive check on field name and return case sensitive field name which you can use to access the value. Refer below highlighted code changes.

function getCaseSensitiveAttributeName(fieldAliases, fieldName){

  for (var key in fieldAliases) {

  if (key.toUpperCase() === fieldName.toUpperCase()){

  return key;

  }

  }

  return "";

}

function selectInBuffer(response){

  var feature;

  var features = response.features;

  var inBuffer = [];

  //filter out features that are not actually in buffer, since we got all points in the buffer's bounding box

  var mySensitiveField = getCaseSensitiveAttributeName(response.fieldAliases, <<Your Field Name>>);

  for (var i = 0; i < features.length; i++) {

  feature = features;

  if(circle.contains(feature.geometry)){

  inBuffer.push(feature.attributes[mySensitiveField]);

  }

  }

  var query = new Query();

  query.objectIds = inBuffer;

  //use a fast objectIds selection query (should not need to go to the server)

  featureLayer.selectFeatures(query, FeatureLayer.SELECTION_NEW, function(results){

  var totalPopulation = sumPopulation(results);

  var r = "";

  r = "<b>The total Census Block population within the buffer is <i>" + totalPopulation + "</i>.</b>";

  dom.byId("messages").innerHTML = r;

  });

}