Use a `decorateLinkedFileData` function on server to add project name

services/web/app/coffee/Features/LinkedFiles/LinkedFilesController.coffee

@@ -26,11 +26,14 @@ module.exports = LinkedFilesController = {
 		Agent.checkAuth project_id, linkedFileData, user_id, (err, allowed) ->
 			return Agent.handleError(err, req, res, next) if err?
 			return res.sendStatus(403) if !allowed
-			Agent.writeIncomingFileToDisk project_id, linkedFileData, user_id, (error, fsPath) ->
-				if error?
-					logger.error {err: error, project_id, name, linkedFileData, parent_folder_id, user_id}, 'error writing linked file to disk'
-					return Agent.handleError(error, req, res, next)
-				EditorController.upsertFile project_id, parent_folder_id, name, fsPath, linkedFileData, "upload", user_id, (error, file) ->
-					return next(error) if error?
-					res.json(new_file_id: file._id) # created
-}
+			Agent.decorateLinkedFileData linkedFileData, (err, newLinkedFileData) ->
+				return Agent.handleError(err) if err?
+				linkedFileData = newLinkedFileData
+				Agent.writeIncomingFileToDisk project_id, linkedFileData, user_id, (error, fsPath) ->
+					if error?
+						logger.error {err: error, project_id, name, linkedFileData, parent_folder_id, user_id}, 'error writing linked file to disk'
+						return Agent.handleError(error, req, res, next)
+					EditorController.upsertFile project_id, parent_folder_id, name, fsPath, linkedFileData, "upload", user_id, (error, file) ->
+						return next(error) if error?
+						res.json(new_file_id: file._id) # created
+	}

services/web/app/coffee/Features/LinkedFiles/ProjectFileAgent.coffee

@@ -1,6 +1,7 @@
 FileWriter = require('../../infrastructure/FileWriter')
 AuthorizationManager = require('../Authorization/AuthorizationManager')
 ProjectLocator = require('../Project/ProjectLocator')
+ProjectGetter = require('../Project/ProjectGetter')
 DocstoreManager = require('../Docstore/DocstoreManager')
 FileStoreHandler = require('../FileStore/FileStoreHandler')
 FileWriter = require('../../infrastructure/FileWriter')
@@ -32,6 +33,14 @@ BadDataError = (message) ->
 BadDataError.prototype.__proto__ = Error.prototype
 
 
+ProjectNotFoundError = (message) ->
+	error = new Error(message)
+	error.name = 'ProjectNotFound'
+	error.__proto__ = ProjectNotFoundError.prototype
+	return error
+ProjectNotFoundError.prototype.__proto__ = Error.prototype
+
+
 SourceFileNotFoundError = (message) ->
 	error = new Error(message)
 	error.name = 'BadData'
@@ -46,17 +55,24 @@ module.exports = ProjectFileAgent =
 		return _.pick(
 			data,
 			'source_project_id',
-			'source_entity_path',
-			'source_project_display_name'
+			'source_entity_path'
 		)
 
 	_validate: (data) ->
 		return (
 			data.source_project_id? &&
-			data.source_entity_path? &&
-			data.source_project_display_name?
+			data.source_entity_path?
 		)
 
+	decorateLinkedFileData: (data, callback = (err, newData) ->) ->
+		callback = _.once(callback)
+		{ source_project_id } = data
+		return callback(new BadDataError()) if !source_project_id?
+		ProjectGetter.getProject source_project_id, (err, project) ->
+			return callback(err) if err?
+			return callback(new ProjectNotFoundError()) if !project?
+			callback(err, _.extend(data, {source_project_display_name: project.name}))
+
 	checkAuth: (project_id, data, current_user_id, callback = (error, allowed)->) ->
 		callback = _.once(callback)
 		if !ProjectFileAgent._validate(data)
@@ -104,6 +120,8 @@ module.exports = ProjectFileAgent =
 			res.status(400).send("The file is the wrong type")
 		else if error instanceof SourceFileNotFoundError
 			res.status(404).send("Source file not found")
+		else if error instanceof ProjectNotFoundError
+			res.status(404).send("Project not found")
 		else
 			next(error)
 		next()

services/web/app/coffee/Features/LinkedFiles/UrlAgent.coffee

@@ -27,6 +27,9 @@ module.exports = UrlAgent = {
 			url: @._prependHttpIfNeeded(data.url)
 		}
 
+	decorateLinkedFileData: (data, callback = (err, newData) ->) ->
+		return callback(null, data)
+
 	checkAuth: (project_id, data, current_user_id, callback = (error, allowed)->) ->
 		callback(null, true)
 

services/web/public/coffee/ide/file-tree/controllers/FileTreeController.coffee

@@ -301,18 +301,16 @@ define [
 
 			$scope.create = () ->
 				projectId = $scope.data.selectedProjectId
-				projectDisplayName = _.find($scope.data.projects, (p) -> p._id == projectId).name
 				path = $scope.data.selectedProjectEntity
 				name = $scope.data.name
-				if !name || !path || !projectId || !projectDisplayName
+				if !name || !path || !projectId
 					_reset(err: true)
 					return
 				_setInFlight('create')
 				ide.fileTreeManager
 					.createLinkedFile(name, parent_folder, 'project_file', {
 						source_project_id: projectId,
-						source_entity_path: path,
-						source_project_display_name: projectDisplayName
+						source_entity_path: path
 					})
 					.then () ->
 						_reset(err: false)