Posting feature layer on to a database

WilliamHepp — Thu, 25 Mar 2021 13:10:54 GMT

Hello!

We are currently doing our bachelor project and are trying to save our feature layer for later use. What is the best way for doing that? Currently, we have created 2 feature layer that we load into our application through ArcGIS services we then create a local feature layer from the 2 feature layer. We then want to save our newly made feature layer for later use. Can you post feature layers to a database? Here is how far we have come:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>ArcGIS API for JavaScript Tutorials: Query a feature layer (spatial)</title>
<style>
html, body, #viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}

#layerToggle {
top: 120px;
right: 20px;
position: absolute;
z-index: 99;
background-color: white;
border-radius: 8px;
border-style: solid;
border-color: black;
padding: 10px;
opacity: 1;
}
#layerToggle1 {
top: 60px;
right: 20px;
position: absolute;
z-index: 99;
background-color: white;
border-radius: 8px;
border-width: 2px;
border-style: solid;
border-color: black;
padding: 10px;
opacity: 1;
}
</style>
<link rel="stylesheet" href="https://js.arcgis.com/4.18/esri/themes/light/main.css">
<script src="https://js.arcgis.com/4.18/"></script>
<script>
require([

"esri/config",
"esri/Map",
"esri/views/MapView",

"esri/widgets/Sketch",
"esri/layers/GraphicsLayer",
"esri/layers/FeatureLayer",
"esri/Graphic",
"esri/widgets/Search",
"esri/renderers/ClassBreaksRenderer",
"esri/widgets/Legend","esri/views/SceneView",

], function(esriConfig,Map, MapView, Sketch, GraphicsLayer, FeatureLayer,Graphic,Search,ClassBreaksRenderer,Legend) {

esriConfig.apiKey = "AAPKac92afe710ec4db9bf8423343102b147tLzn_6tk50TFgDBNl63Tr-44V9blp4Njp8ffo7faiUeI0K_9qJpyVRV2xLm6y2Zc";

const map = new Map({
basemap: "arcgis-topographic" //Basemap layer service
});

// the layer that we want to save for later use
var layer;

const jordblock = new FeatureLayer({
url: "https://services3.arcgis.com/CRqjw6FC9fpbCgMy/ArcGIS/rest/services/BlockKarta/FeatureServer/0",
renderer: renderer,
outFields: ["BLOCKID","REGION","KATEGORI","AREAL","AGOSLAG"],
visible: false,
});

map.add(jordblock);

// Create a symbol for rendering the graphic
var fillSymbol1 = {
type: "simple-fill",
size: "8px",// autocasts as new SimpleFillSymbol()
color: [27, 39, 79, 0.8],
outline: {
// autocasts as new SimpleLineSymbol()
color: [255, 255, 255],
width: 1
}
};

var selectionLayer = new GraphicsLayer();
view.on("click", function(e){
view.hitTest(e.screenPoint).then(function(response){
selectionLayer.graphics.removeAll();
response.results.forEach(function(g){
var graphic = g.graphic;
if(g.graphic){

queryFeaturelayer( g.graphic.geometry);
graphic.symbol = fillSymbol1;
selectionLayer.graphics.add(graphic);
map.add(selectionLayer);
}
});
});
});

// Reference query layer
const parcelLayer = new FeatureLayer({
url: "https://services3.arcgis.com/CRqjw6FC9fpbCgMy/ArcGIS/rest/services/Lerkarta/FeatureServer/0",

});

function queryFeaturelayer(geometry) {

const parcelQuery = {
spatialRelationship: "intersects", // Relationship operation to apply
geometry: geometry,
outFields: ["DN"],// The sketch feature geometry
// Attributes to return
returnGeometry: true
};

parcelLayer.queryFeatures(parcelQuery)
.then((results) => {
displayResults(results);

}).catch((error) => {

});

}

// Show features (graphics)
function displayResults(results) {

const defaultSym = {
type: "simple-fill", // autocasts as new SimpleFillSymbol()
outline: {
// autocasts as new SimpleLineSymbol()
color: [128, 128, 128, 0.2],
width: "0.5px"
}
};
var renderer2 = {
type: "simple", // autocasts as new SimpleRenderer()
symbol: defaultSym, // the default symbol defined in step 1
legendOptions: {
title: "% population in poverty by county"
},// label for the legend
visualVariables: [
{
type: "color", // indicates this is a color visual variable
field: "DN", // total population in poverty
stops: [
{
value: 0, // features where < 10% of the pop in poverty
color: "#00FF00", // will be assigned this color (beige)
label: "Lerhalt 0" // label to display in the legend
},
{
value: 30, // features where < 10% of the pop in poverty
color: "#FFFF00", // will be assigned this color (beige)
label: "Lerhalt 30" // label to display in the legend
},
{
value: 60, // features where > 30% of the pop in poverty
color: "#FF0000", // will be assigned this color (purple)
label: "Lerhalt 60" // label to display in the legend
}
]

// features with values between 0.1 - 0.3 will be assigned
// a color on a ramp between beige and purple proportional
// to where the value falls between 0.1 and 0.3
}
]
};
layer = new FeatureLayer({
source: results.features,
objectIdField: "OBJECTID",
fields: [{
name: "OBJECTID",
type: "oid"
}, {
name: "DN",
type: "double"
}],
visible: false,// array of graphics objects
renderer: renderer2
});

}

var lerblockToggle = document.getElementById("layerToggle");

// Listen to the change event for the checkbox
lerblockToggle.addEventListener("click", function() {
map.add(layer);
layer.visible = true;
});

//lerblock.setSelectionSymbol(fillSymbol1);
var jordblockToggle = document.getElementById("jordblock");

// Listen to the change event for the checkbox
jordblockToggle.addEventListener("change", function() {
// When the checkbox is checked (true), set the layer's visibility to true
jordblock.visible = jordblockToggle.checked;
});

});

</script>
</head>
<body>
<div id="viewDiv"></div>
<div id="viewDiv2"> <span id="layerToggle1" class="esri-widget"> <input type="checkbox" id="jordblock" />Visa block</span></div>
<div id="viewDiv"> <button id="layerToggle" class="esri-widget" > Visa lerblock</button></div>
</body>
</html>

Re: Posting feature layer on to a database

JeffreyWilkerson — Thu, 25 Mar 2021 16:59:50 GMT

Not sure what you are trying to do when you say 'post feature layers to database'. You can edit the existing layers (if you have edit access) by using the Editor widget (Editor ), or create a new online layer to add data to (by editing) (Create ), or export the ArcGIS Online layer by using the Export option (Export ). I'm currently trying to work through an Export operation to get to an Excel spreadsheet of the data, but you could export to a Shapefile or File Geodatabase format as well.

topic Posting feature layer on to a database in ArcGIS JavaScript Maps SDK Questions

Posting feature layer on to a database

Re: Posting feature layer on to a database