nommuna2/Readme.md

## Readme.md

      
    Raw
  

              Readme.md
            
          
    Add Shapefile from disk to a map in 4.x

This sample is a modified 4.x version from the 3.x version linked here (https://developers.arcgis.com/javascript/3/jssamples/portal_addshapefile.html).

  
## index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
    <title>Feature Layer</title>
    <link rel="stylesheet" href="https://js.arcgis.com/4.9/esri/css/main.css">
    <link rel="stylesheet" href="stylesheet.css">
    <script src="https://js.arcgis.com/4.9/"></script>
</head>
<body>
    <div id="viewDiv"></div>
    <div>
      <form enctype="multipart/form-data" method="post" id="uploadForm">
        <div class="field">
          <label class="file-upload">
            <span><strong>Add File</strong></span>
            <input type="file" name="file" id="inFile" />
          </label>
        </div>
      </form>
      <span class="file-upload-status" style="opacity:1;" id="upload-status"></span>
      <div id="fileInfo">&nbsp;</div>
    </div>
</body>
<script src="index.js"></script>
</html>

## index.js
require([
    "esri/Map",
    "esri/views/MapView",
    "esri/request",
    "esri/PopupTemplate",
    "dojo/sniff",
    "esri/layers/FeatureLayer",
    "esri/geometry/Point",
    "esri/geometry/Polygon",
    "esri/geometry/support/jsonUtils",
    "esri/symbols/SimpleFillSymbol",
    "esri/geometry/Polyline",
    "dojo/domReady!"
  ],
  function (Map, MapView, esriRequest, PopupTemplate,sniff,FeatureLayer,Point,Polygon, jsonUtils,SimpleFillSymbol,Polyline) {

    var portalUrl = 'Your portal/AGOL URL here';
    var proxy = 'URL to your Proxy if you need one';

    var form = document.getElementById('uploadForm');
    form.addEventListener("change",function(e){
       var fileName = e.target.value.toLowerCase();
       if (sniff("ie")) { //filename is full path in IE so extract the file name
              var arr = fileName.split("\\");
              fileName = arr[arr.length - 1];
       }
       if (fileName.indexOf(".zip") !== -1) {//is file a zip - if not notify user
              generateFeatureCollection(fileName);
       }
      else {
              document.getElementById('upload-status').innerHTML = '<p style="color:red">Add shapefile as .zip file</p>';
      }
    });

    //Create a new map and set the basemap to Dark gray
    var map = new Map({
      basemap: "dark-gray",
    });

    //set a new view and set the properties of the view
    var view = new MapView({
      container: "viewDiv",
      map: map,
      center: [-86.049, 38.485],
      zoom: 3
    });

    function generateFeatureCollection(fileName){
      var name = fileName.split(".");
      //Chrome and IE add c:\fakepath to the value - we need to remove it
      //See this link for more info: http://davidwalsh.name/fakepath
      name = name[0].replace("c:\\fakepath\\", "");
      document.getElementById('upload-status').innerHTML = '<b>Loading… </b>' + name;

      //Define the input params for generate see the rest doc for details
      //http://www.arcgis.com/apidocs/rest/index.html?generate.html
      var params = {
        'name': name,
        'targetSR': map.spatialReference,
        'maxRecordCount': 1000,
        'enforceInputFileSizeLimit': true,
        'enforceOutputJsonSizeLimit': true
      };

      //generalize features for display Here we generalize at 1:40,000 which is approx 10 meters
      //This should work well when using web mercator.
      var resolution = view.resolution;
      params.generalize = true;
      params.maxAllowableOffset = resolution;
      params.reducePrecision = true;
      params.numberOfDigitsAfterDecimal = 0;

      var input = document.querySelector('input[type="file"]');
      var data = input.files[0];
      var formdata = new FormData();
      formdata.append('filetype','shapefile');
      formdata.append('publishParameters', JSON.stringify(params));
      formdata.append('f', 'json');
      formdata.append('file', data);

      fetch(proxy + portalUrl + '/sharing/rest/content/features/generate', {
        method: 'post',
        body: formdata
        }).then(function(response){
          return response.json();
        }).then(function(response){
          if(!response){
            if(response.error){
              errorHandler(response.error);
              return;
            }
          }
          var layerName = response.featureCollection.layers[0].layerDefinition.name;
          document.getElementById('upload-status').innerHTML = '<b>Loaded: </b>' + layerName;
          addShapefileToMap(response.featureCollection);
      });
    }

    function errorHandler (error) {
        document.getElementById('upload-status').innerHTML = "<p style='color:red'>" + error.message + "</p>";
    }

    function addShapefileToMap(featureCollection){
      var layers = [];
      featureCollection.layers.forEach(function(layer){
        var featureLayer = new FeatureLayer({
          objectIdField: 'ObjectID'
        });

        switch (layer.featureSet.geometryType) {
          case 'esriGeometryPoint':
              //Overwrite the geometry to an actual Point
              layer.featureSet.features.forEach(function(feature){
                feature.geometry = new Point({
                  x: feature.geometry.x,
                  y: feature.geometry.y,
                  spatialReference: feature.geometry.spatialReference
                });
              });
              featureLayer.renderer = {type: 'simple', symbol: {type: 'simple-marker', size: 6, color: 'black'}};
              break;
          case 'esriGeometryPolygon':
              //Overwrite the geometry to an actual Polygon
              layer.featureSet.features.forEach(function(feature){
                feature.geometry = new Polygon({
                  rings: feature.geometry.rings,
                  spatialReference: feature.geometry.spatialReference
                });
              });
              featureLayer.renderer = {type: 'simple', symbol: {type: 'simple-fill', size: 6, color: 'black'}};
              break;
          case 'esriGeometryPolyline':
              //Overwrite the geometry to an actual Polyline
              layer.featureSet.features.forEach(function(feature){
                feature.geometry = new Polyline({
                  paths: feature.geometry.paths,
                  spatialReference: feature.geometry.spatialReference
                });
              });
              featureLayer.renderer = {type: 'simple', symbol: {type: 'simple-line', size: 6, color: 'white'}};
              break;
          default:
              console.log('Not a valid shapefile');
        }

        featureLayer.source = layer.featureSet.features;
        layers.push(featureLayer);
      });
      map.addMany(layers);
      document.getElementById('upload-status').innerHTML = '';
    }
  });

## stylesheet.css
html, body, #viewDiv {
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
  }
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
	<title>Feature Layer</title>
	<link rel="stylesheet" href="https://js.arcgis.com/4.9/esri/css/main.css">
	<link rel="stylesheet" href="stylesheet.css">
	<script src="https://js.arcgis.com/4.9/"></script>
	</head>
	<body>
	<div id="viewDiv"></div>
	<div>
	<form enctype="multipart/form-data" method="post" id="uploadForm">
	<div class="field">
	<label class="file-upload">
	<span><strong>Add File</strong></span>
	<input type="file" name="file" id="inFile" />
	</label>
	</div>
	</form>
	<span class="file-upload-status" style="opacity:1;" id="upload-status"></span>
	<div id="fileInfo"> </div>
	</div>
	</body>
	<script src="index.js"></script>
	</html>
	require([
	"esri/Map",
	"esri/views/MapView",
	"esri/request",
	"esri/PopupTemplate",
	"dojo/sniff",
	"esri/layers/FeatureLayer",
	"esri/geometry/Point",
	"esri/geometry/Polygon",
	"esri/geometry/support/jsonUtils",
	"esri/symbols/SimpleFillSymbol",
	"esri/geometry/Polyline",
	"dojo/domReady!"
	],
	function (Map, MapView, esriRequest, PopupTemplate,sniff,FeatureLayer,Point,Polygon, jsonUtils,SimpleFillSymbol,Polyline) {

	var portalUrl = 'Your portal/AGOL URL here';
	var proxy = 'URL to your Proxy if you need one';

	var form = document.getElementById('uploadForm');
	form.addEventListener("change",function(e){
	var fileName = e.target.value.toLowerCase();
	if (sniff("ie")) { //filename is full path in IE so extract the file name
	var arr = fileName.split("\\");
	fileName = arr[arr.length - 1];
	}
	if (fileName.indexOf(".zip") !== -1) {//is file a zip - if not notify user
	generateFeatureCollection(fileName);
	}
	else {
	document.getElementById('upload-status').innerHTML = '<p style="color:red">Add shapefile as .zip file</p>';
	}
	});

	//Create a new map and set the basemap to Dark gray
	var map = new Map({
	basemap: "dark-gray",
	});

	//set a new view and set the properties of the view
	var view = new MapView({
	container: "viewDiv",
	map: map,
	center: [-86.049, 38.485],
	zoom: 3
	});

	function generateFeatureCollection(fileName){
	var name = fileName.split(".");
	//Chrome and IE add c:\fakepath to the value - we need to remove it
	//See this link for more info: http://davidwalsh.name/fakepath
	name = name[0].replace("c:\\fakepath\\", "");
	document.getElementById('upload-status').innerHTML = '<b>Loading… </b>' + name;

	//Define the input params for generate see the rest doc for details
	//http://www.arcgis.com/apidocs/rest/index.html?generate.html
	var params = {
	'name': name,
	'targetSR': map.spatialReference,
	'maxRecordCount': 1000,
	'enforceInputFileSizeLimit': true,
	'enforceOutputJsonSizeLimit': true
	};

	//generalize features for display Here we generalize at 1:40,000 which is approx 10 meters
	//This should work well when using web mercator.
	var resolution = view.resolution;
	params.generalize = true;
	params.maxAllowableOffset = resolution;
	params.reducePrecision = true;
	params.numberOfDigitsAfterDecimal = 0;

	var input = document.querySelector('input[type="file"]');
	var data = input.files[0];
	var formdata = new FormData();
	formdata.append('filetype','shapefile');
	formdata.append('publishParameters', JSON.stringify(params));
	formdata.append('f', 'json');
	formdata.append('file', data);

	fetch(proxy + portalUrl + '/sharing/rest/content/features/generate', {
	method: 'post',
	body: formdata
	}).then(function(response){
	return response.json();
	}).then(function(response){
	if(!response){
	if(response.error){
	errorHandler(response.error);
	return;
	}
	}
	var layerName = response.featureCollection.layers[0].layerDefinition.name;
	document.getElementById('upload-status').innerHTML = '<b>Loaded: </b>' + layerName;
	addShapefileToMap(response.featureCollection);
	});
	}

	function errorHandler (error) {
	document.getElementById('upload-status').innerHTML = "<p style='color:red'>" + error.message + "</p>";
	}

	function addShapefileToMap(featureCollection){
	var layers = [];
	featureCollection.layers.forEach(function(layer){
	var featureLayer = new FeatureLayer({
	objectIdField: 'ObjectID'
	});

	switch (layer.featureSet.geometryType) {
	case 'esriGeometryPoint':
	//Overwrite the geometry to an actual Point
	layer.featureSet.features.forEach(function(feature){
	feature.geometry = new Point({
	x: feature.geometry.x,
	y: feature.geometry.y,
	spatialReference: feature.geometry.spatialReference
	});
	});
	featureLayer.renderer = {type: 'simple', symbol: {type: 'simple-marker', size: 6, color: 'black'}};
	break;
	case 'esriGeometryPolygon':
	//Overwrite the geometry to an actual Polygon
	layer.featureSet.features.forEach(function(feature){
	feature.geometry = new Polygon({
	rings: feature.geometry.rings,
	spatialReference: feature.geometry.spatialReference
	});
	});
	featureLayer.renderer = {type: 'simple', symbol: {type: 'simple-fill', size: 6, color: 'black'}};
	break;
	case 'esriGeometryPolyline':
	//Overwrite the geometry to an actual Polyline
	layer.featureSet.features.forEach(function(feature){
	feature.geometry = new Polyline({
	paths: feature.geometry.paths,
	spatialReference: feature.geometry.spatialReference
	});
	});
	featureLayer.renderer = {type: 'simple', symbol: {type: 'simple-line', size: 6, color: 'white'}};
	break;
	default:
	console.log('Not a valid shapefile');
	}

	featureLayer.source = layer.featureSet.features;
	layers.push(featureLayer);
	});
	map.addMany(layers);
	document.getElementById('upload-status').innerHTML = '';
	}
	});
	html, body, #viewDiv {
	padding: 0;
	margin: 0;
	height: 100%;
	width: 100%;
	}