Revert authors ability to assign anyone

app/controllers/autocomplete_controller.rb

@@ -15,7 +15,7 @@ class AutocompleteController < ApplicationController
         @users = [*@users, current_user]
       end
 
-      unless params[:author_id] == "false"
+      if params[:author_id] && params[:author_id] != "false"
         @users = [User.find(params[:author_id]), *@users]
       end
 

app/models/concerns/issuable.rb

@@ -116,11 +116,6 @@ module Issuable
     assignee_id_changed?
   end
 
-  def can_assign_user?(current_user)
-    author == current_user ||
-    Ability.abilities.allowed?(current_user, :"admin_#{to_ability_name}", project)
-  end
-
   def open?
     opened? || reopened?
   end

app/services/issuable_base_service.rb

@@ -33,7 +33,7 @@ class IssuableBaseService < BaseService
     end
   end
 
-  def filter_params(issuable_ability_name, issuable)
+  def filter_params(issuable_ability_name = :issue)
     params[:assignee_id]  = "" if params[:assignee_id] == IssuableFinder::NONE
     params[:milestone_id] = "" if params[:milestone_id] == IssuableFinder::NONE
 
@@ -42,18 +42,13 @@ class IssuableBaseService < BaseService
     unless can?(current_user, ability, project)
       params.delete(:milestone_id)
       params.delete(:label_ids)
-
-      # The author of an issue can be assigned, to signal the ball being in his/her
-      # court. This allow him/her to reassign the issue back to the reviewer.
-      if issuable && !(issuable.author == current_user)
       params.delete(:assignee_id)
     end
   end
-  end
 
   def update(issuable)
     change_state(issuable)
-    filter_params(issuable)
+    filter_params
     old_labels = issuable.labels.to_a
 
     if params.present? && issuable.update_attributes(params.merge(updated_by: current_user))

app/services/issues/base_service.rb

@@ -10,8 +10,8 @@ module Issues
 
     private
 
-    def filter_params(issuable = nil)
-      super(:issue, issuable)
+    def filter_params
+      super(:issue)
     end
 
     def execute_hooks(issue, action = 'open')

app/services/merge_requests/base_service.rb

@@ -23,8 +23,8 @@ module MergeRequests
 
     private
 
-    def filter_params(issuable = nil)
-      super(:merge_request, issuable)
+    def filter_params
+      super(:merge_request)
     end
   end
 end

app/views/shared/issuable/_sidebar.html.haml

@@ -30,7 +30,7 @@
         .title
           %label
             Assignee
-          - if issuable.can_assign_user?(current_user)
+          - if can?(current_user, :"admin_#{issuable.to_ability_name}", @project)
             .pull-right
               = link_to 'Edit', '#', class: 'edit-link'
         .value

spec/controllers/autocomplete_controller_spec.rb

@@ -12,13 +12,13 @@ describe AutocompleteController do
       project.team << [user, :master]
     end
 
-    let(:body) { JSON.parse(response.body) }
-
     describe 'GET #users with project ID' do
       before do
         get(:users, project_id: project.id)
       end
 
+      let(:body) { JSON.parse(response.body) }
+
       it { expect(body).to be_kind_of(Array) }
       it { expect(body.size).to eq 1 }
       it { expect(body.first["username"]).to eq user.username }

spec/models/concerns/issuable_spec.rb

@@ -111,20 +111,6 @@ describe Issue, "Issuable" do
     end
   end
 
-  describe "#can_assign_user?" do
-    let(:author)  { build(:user) }
-    let(:issue)   { build(:issue, author: author)}
-
-    it "Allows the author to change the assignee" do
-      expect(issue.can_assign_user?(author)).to be_truthy
-    end
-
-    it "Doesn't allow others, non-team members" do
-      other_user = build(:user)
-      expect(issue.can_assign_user?(other_user)).to be_falsey
-    end
-  end
-
   describe "votes" do
     before do
       author = create :user