Add feature with attachment in single step

KamilNovák

Hello,

is there a way in ArcGIS Maps SDK for JavaScript how to add new feature with attachments to FeatureService in single step (using only one HTTP request in the background).

Currently, I'm able to do it by using the applyEdits() method, which adds the new feature, then I make a query based on the globalid of this new feature and use the addAttachment() method to join attachments.

applyEdits() method has a parameter addAttachments in the API documentation, too. Howewer, I think that I still need to know the globalid in that case.

Ideally, I would only need to make one request for some reasons.

Thank for replies.

 

UndralBatsukh

Hi there, 

Yes it can be done. You need to create a new feature with a globalId and use that globalId for the attachments all in one applyEdits method. You applyEdits param would look something like the following

 

const edits = {
  addFeatures: new Collection(addFeatures),
  deleteFeatures: deleteFeatures,

  addAttachments: addAttachments,
  updateAttachments: updateAttachments,
  deleteAttachments: deleteAttachments
}

 

 

where where the new Feature has a new global id attribute set... something like GlobalID: "f0e2d7a2-b1b7-4f34-a080-c87286001e39"

Then your addAttachments array has a new attachment as created something like below:

 

addAttachments.push({
  feature: newFeature,
  attachment: {
    globalId: f0e2d7a2-b1b7-4f34-a080-c87286001e39,
    name: "your attachment name,
    data: input.files[0] || blob
  }
});

 

 

Notice that the globalId of the attachment matches the global id of the new feature you are creating. Then just call applyEdits with those two params set on `edits` param. Hope this makes sense.