fix page view participation checkmark with a2

Generates a page view for a2 assignment submissions through
graphql post.

closes EVAL-2290
flag=assignments_2_student

Test Plan:
- make a course populated with students that has the Assignment
Enhancments feature enabled

- create an assignment on the course

- while acting as a student, submit the assignement to trigger
participation

- navigate to the student's page views, verify that a participation
checkmark appears.

Change-Id: I80802137a0d73647cfeb251256cb328c864bbcaf
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/301934
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
QA-Review: Kai Bjorkman <kbjorkman@instructure.com>
Reviewed-by: Kai Bjorkman <kbjorkman@instructure.com>
Reviewed-by: Eduardo Escobar <eduardo.escobar@instructure.com>
Product-Review: Deborah Kwak <deborah.kwak@instructure.com>

app/controllers/application_controller.rb

@@ -1051,8 +1051,9 @@ class ApplicationController < ActionController::Base
   def get_context(include_deleted: false)
     GuardRail.activate(:secondary) do
       unless @context
-        if params[:course_id]
+        if params[:course_id] || (request.url.include?("/graphql") && params[:operationName] == "CreateSubmission")
-          @context = api_find(Course.active, params[:course_id])
+
+          @context = params[:course_id] ? api_find(Course.active, params[:course_id]) : pull_context_course
           @context.root_account = @domain_root_account if @context.root_account_id == @domain_root_account.id # no sense in refetching it
           params[:context_id] = params[:course_id]
           params[:context_type] = "Course"
@@ -3097,6 +3098,11 @@ class ApplicationController < ActionController::Base
   end
   helper_method :k5_user?
 
+  def pull_context_course
+    assignment_id = params[:variables][:assignmentLid]
+    ::Assignment.active.find(assignment_id).course
+  end
+
   def react_discussions_post_enabled_for_preferences_use?
     if @context.instance_of?(UserProfile) && Account.default.feature_enabled?(:react_discussions_post)
       return true

app/controllers/graphql_controller.rb

@@ -37,6 +37,7 @@ class GraphQLController < ApplicationController
 
   def execute
     result = execute_on(CanvasSchema)
+    prep_page_view_for_submit
     render json: result
   end
 
@@ -103,4 +104,12 @@ class GraphQLController < ApplicationController
       )
     end
   end
+
+  def prep_page_view_for_submit
+    return unless params[:operationName] == "CreateSubmission"
+
+    assignment = ::Assignment.active.find(params[:variables][:assignmentLid])
+    get_context
+    log_asset_access(assignment, "assignments", nil, "participate")
+  end
 end

spec/controllers/graphql_controller_spec.rb

@@ -82,6 +82,35 @@ describe GraphQLController do
       expect(JSON.parse(response.body)["data"]).to be_blank
     end
 
+    it "logs a page view for CreateSubmission" do
+      Setting.set("enable_page_views", "db")
+      @course = course_factory(name: "course", active_course: true)
+
+      @assignment = @course.assignments.create!(
+        name: "assignment",
+        due_at: 5.days.ago,
+        points_possible: 10,
+        submission_types: "online_text_entry"
+      )
+
+      test_query = <<~GQL
+        mutation {
+          CreateSubmission(input: {assignmentId: $assignmentLid, submissionType: $type, body: $body})
+      GQL
+
+      test_variables = {
+        assignmentLid: @assignment.id,
+        body: "<p>test</p>",
+        type: "online_text_entry"
+      }
+      # need this for the page view to be assigned a proper request_id
+      RequestContext::Generator.new(->(_env) { [200, {}, []] }).call({})
+
+      expect { post :execute, params: { query: test_query, operationName: "CreateSubmission", variables: test_variables }, format: :json }.to change { PageView.count }.by(1)
+
+      expect(PageView.last.participated).to be(true)
+    end
+
     context "datadog metrics" do
       before { allow(InstStatsd::Statsd).to receive(:increment).and_call_original }