L.esri.Tasks.Find

L.esri.Tasks.Find is an abstraction for the find API included in Map Services. It provides a chainable API for building request parameters and executing find tasks.

Constructor

Constructor	Description
L.esri.Tasks.find(<MapService> endpoint) L.esri.Tasks.find(<Object> options)	Accepts either an options object or an instance of MapService.

Options

Option	Type	Default	Description
url	String	''	URL of the ArcGIS service you would like to consume.
proxy	String	false	URL of an ArcGIS API for JavaScript proxy or ArcGIS Resource Proxy to use for proxying POST requests.
useCors	Boolean	true	If this service should use CORS when making GET requests.

Methods

Method	Returns	Description
text(<String> text)	this	Text that is searched across the layers and fields the user specifies.
contains(<Boolean> contains)	this	When true find task will search for a value that contains the searchText. When false it will do an exact match on the searchText string. Default is true.
fields(<Array> fields or <String> fields)	this	An array or comma-separated list of field names to search. If not specified, all fields are searched.
spatialReference(<Integer> sr)	this	The well known ID (ex. 4326) for the results.
layerDef(<Integer> id, <String> where)	this	Add a layer definition to the find task.
layers(<Array> layers or <String> layers)	this	Layers to perform find task on. Accepts an array of layer IDs or comma-separated list.
returnGeometry(<Boolean> returnGeometry)	this	Return geometry with results. Default is true.
maxAllowableOffset(<Integer> maxAllowableOffset)	this	Specifies the maximum allowable offset to be used for generalizing geometries returned by the find task.
precision(<Integer> precision)	this	Specifies the number of decimal places in returned geometries.
returnZ(<Boolean> returnZ)	this	Include Z values in the results. Default value is true. This parameter only applies if returnGeometry=true.
returnM(<Boolean> returnM)	this	Includes M values if the features have them. Default value is false. This parameter only applies if returnGeometry=true.
dynamicLayers(<Object> dynamicLayers)	this	Property used for adding new layers or modifying the data source of existing ones in the current map service.
simplify(<Map> map, <Integer> factor)	this	Simplify the geometries of the output features for the current map view. the factor parameter controls the amount of simplification between 0 (no simplification) and 1 (simplify to the most basic shape possible).
token(<String> token)	this	Adds a token to this request if the service requires authentication. Will be added automatically if used with a service.
run(<Function> callback, <Object> context)	this	Exectues the find request with the current parameters, features will be passed to callback as a GeoJSON FeatureCollection. Accepts an optional function context.

Example

Finding features

var find = L.esri.Tasks.find('http://services.nationalmap.gov/arcgis/rest/services/govunits/MapServer');

find.layers('18')
    .text('Colorado');

find.run(function(error, featureCollection, response){
    console.log('GNIS Name: ' + featureCollection.features[0].properties.GNIS_NAME);
});

Finding features by specified search field name

var find = L.esri.Tasks.find({
    url: 'http://services.nationalmap.gov/arcgis/rest/services/govunits/MapServer'
});

find.layers('13')
    .text('198133')
    .fields('GNIS_ID');

find.run(function(error, featureCollection, response){
    console.log('Found ' + featureCollection.features.length + ' feature(s)');
    console.log('Found ' + featureCollection.features[0].properties.GNIS_NAME + ' in ' + featureCollection.features[0].properties.STATE_NAME);
});

Edit this page on GitHub