Spatial query for attribute and apply to feature before apply edits

[KrishV]

Hello All,

I'm using Web App Builder 2.2 Developer Edition.

Once feature is captured using Edit Widget, I want to apply attributes from the spatial query before apply edits. I have written my code as below to achieve this but query gets completed after attribute inspector is opened.

_canDeleteSelectionFeatures: function () {
// return ture if all features can be deleted,
// else return false.
var canDeleteFeatures = true;
var selectionFeatures = this._getSelectionFeatuers();
if(selectionFeatures.length === 0) {
canDeleteFeatures = false;
} else {
array.some(selectionFeatures, function (feature) {

var featureLayer = feature.getLayer && feature.getLayer();

//I have written below line 
on(featureLayer, 'before-apply-edits', lang.hitch(this, this.onBeforeApplyEdits))

if (!featureLayer ||
!featureLayer.getEditCapabilities({ feature: feature }).canDelete
) {
canDeleteFeatures = false;
return true;
}

}, this);
}
return canDeleteFeatures;
},

and then onBeforeApplyEdits, I have done spatial query to get the required attribute as below:

onBeforeApplyEdits: function (evt) {

if (evt.adds != null) {

var selectionFeatures = this._getSelectionFeatuers();

array.some(selectionFeatures, lang.hitch(this,function (feature) {

var queryDivsionName = new Query();
queryDivsionName.returnGeometry = false;
queryDivsionName.outFields = ["division"];
queryDivsionName.geometry = feature.geometry;
queryDivsionName.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;

var queryDivsionNameTask = new QueryTask(divsionLayer.url);

execute(queryDivsionName, lang.hitch(this, function (featureSet) {
console.log(featureSet);
divisionName = featureSet.features[0].attributes.division;
}));
}));

evt.adds[0].attributes.division = divisionName ;
}

Please suggest how to spatial query for attribute and apply to feature before apply edits.

Regards,

Krish

[RobertScheitlin__GISP · Accepted solution]

Kirsh,

   Something like this:

onBeforeApplyEdits: function (evt) {
  if (evt.adds != null) {
    var feat = evt.adds[0];
    var queryDivsionName = new Query();
    queryDivsionName.returnGeometry = false;
    queryDivsionName.outFields = ["division"];
    queryDivsionName.geometry = feat.geometry;
    queryDivsionName.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;
    var queryDivsionNameTask = new QueryTask(divsionLayer.url);
    execute(queryDivsionName, lang.hitch(this, function (featureSet) {
      feat.attributes.division = featureSet.features[0].attributes.division;
      feat.getLayer().applyEdits(null, [feat], null);
    }));
  }
},‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The way you were attempting to do it was not working because the spatial query is a deferred and the attribute was being set to null before the deferred was returned.

[KrishV]

HiRobert Scheitlin, GISP‌,

Thank you so much! Now, it is working...

But below line is giving error.

feat.getLayer().applyEdits(null, [feat], null);

Regards,

Krish

[RobertScheitlin__GISP]

Krish,

   Can you show me a screenshot of the error.

[KrishV]

Hello Robert Scheitlin, GISP‌,

Please find the screenshot below:

Hence, I have commented below line:

feat.getLayer().applyEdits(null, [feat], null);

Regards,

Krish

[RobertScheitlin__GISP]

Krish,

   So why do you say that it is now working?

[RobertScheitlin__GISP]

Try:

evt.target.applyEdits(‍null, [feat], null);‍

[KrishV]

Hi Robert Scheitlin, GISP‌,

I said working as It is now working as expected after commenting below line. I'm getting the required name inside the attribute inspector. Hence I marked your answer as correct. feat.getLayer().applyEdits(null, [feat], null);

As suggested by you, I have added below line:

evt.target.applyEdits(null, [feat], null);

But after adding this line, I'm getting below error. I'm not sure why I'm getting this error:

Regards,

Krish

[RobertScheitlin__GISP]

Krish,

  So is the value saved to the feature if you leave it and come back and select the feature?

[KrishV]

Hi Robert Scheitlin, GISP‌,

Just now I have observed that value is not saved.

When trying with this line, evt.target.applyEdits(null, [feat], null);

I'm getting below error.

Please suggest how to proceed.

Regards,

Krish