How to add point to map/service that must intersect layer with JS API or REST API?

[GeoffreyWest]

I would like to write a function which allows a user to enter coordinates a via a widget for a WebApplication Builder application.  The user should be able to enter coordinates and the point appears on the map and posts to a feature service if the coordinates intersect with a line feature/map service.  Is there a widget that already harnesses this functionality, if not, how can this be done?

[RobertScheitlin__GISP]

Geoffrey,

   There is not a widget out there for this custom workflow, but it can definitely be created as a custom widget. The main issue will be the precision that will be needed to get a point yo intersect a line.

[Drew]

As Robert mentioned this is a custom widget,
Below is a general description of the task at hand that might get you moving forward.

• Create a blank Web App Builder widget
• Have 2 input boxes for the X and Y values to be entered and a button.
• When the user clicks the button, convert the users input into a Point object and a new Graphic.
• Add the graphic to a new GraphicsLayer - dont forget to symbolize and add the Graphicslayer to the map.
• Using the Point geometry run an intersect against your line(s) and see if it comes back true
  • The geometryEngine can help with the intersect:
• If the intersect is true then take your point and add it to a feature layer using the 'applyEdits' function.

Other factors to consider is the spatial reference of the XY and error checking

Drew