Merge branch 'fix-404-on-network-when-entering-a-nonexistent-git-revision' into 'master'

Network page appear with an error message when entering nonexistent git revision

Closes #2362

See merge request !7172

app/assets/javascripts/network/network_bundle.js

@@ -9,6 +9,8 @@
 
 (function() {
   $(function() {
+    if (!$(".network-graph").length) return;
+
     var network_graph;
     network_graph = new Network({
       url: $(".network-graph").attr('data-url'),

app/controllers/projects/network_controller.rb

@@ -5,17 +5,29 @@ class Projects::NetworkController < Projects::ApplicationController
   before_action :require_non_empty_project
   before_action :assign_ref_vars
   before_action :authorize_download_code!
+  before_action :assign_commit
 
   def show
     @url = namespace_project_network_path(@project.namespace, @project, @ref, @options.merge(format: :json))
     @commit_url = namespace_project_commit_path(@project.namespace, @project, 'ae45ca32').gsub("ae45ca32", "%s")
 
     respond_to do |format|
-      format.html
+      format.html do
+        if @options[:extended_sha1] && !@commit
+          flash.now[:alert] = "Git revision '#{@options[:extended_sha1]}' does not exist."
+        end
+      end
 
       format.json do
         @graph = Network::Graph.new(project, @ref, @commit, @options[:filter_ref])
       end
     end
   end
+
+  def assign_commit
+    return if params[:extended_sha1].blank?
+
+    @options[:extended_sha1] = params[:extended_sha1]
+    @commit = @repo.commit(@options[:extended_sha1])
+  end
 end

app/views/projects/network/show.html.haml

@@ -17,5 +17,6 @@
               = check_box_tag :filter_ref, 1, @options[:filter_ref]
               %span Begin with the selected commit
 
-    .network-graph{ data: { url: @url, commit_url: @commit_url, ref: @ref, commit_id: @commit.id } }
-      = spinner nil, true
+    - if @commit
+      .network-graph{ data: { url: @url, commit_url: @commit_url, ref: @ref, commit_id: @commit.id } }
+        = spinner nil, true

changelogs/unreleased/fix-404-on-network-when-entering-a-nonexistent-git-revision.yml

+---
+title: Fix 404 on network page when entering non-existent git revision
+merge_request: 7172
+author: Hiroyuki Sato

features/project/network_graph.feature

@@ -43,4 +43,4 @@ Feature: Project Network Graph
 
   Scenario: I should fail to look for a commit
     When I look for a commit by ";"
-    Then page status code should be 404
+    Then I should see non-existent git revision error message

features/steps/project/network_graph.rb

@@ -109,4 +109,8 @@ class Spinach::Features::ProjectNetworkGraph < Spinach::FeatureSteps
       find('button').click
     end
   end
+
+  step 'I should see non-existent git revision error message' do
+    expect(page).to have_selector '.flash-alert', text: "Git revision ';' does not exist."
+  end
 end

lib/extracts_path.rb

@@ -106,7 +106,7 @@ module ExtractsPath
   # resolved (e.g., when a user inserts an invalid path or ref).
   def assign_ref_vars
     # assign allowed options
-    allowed_options = ["filter_ref", "extended_sha1"]
+    allowed_options = ["filter_ref"]
     @options = params.select {|key, value| allowed_options.include?(key) && !value.blank? }
     @options = HashWithIndifferentAccess.new(@options)
 
@@ -114,17 +114,13 @@ module ExtractsPath
     @ref, @path = extract_ref(@id)
     @repo = @project.repository
 
-    if @options[:extended_sha1].present?
-      @commit = @repo.commit(@options[:extended_sha1])
-    else
-      @commit = @repo.commit(@ref)
+    @commit = @repo.commit(@ref)
 
-      if @path.empty? && !@commit && @id.ends_with?('.atom')
-        @id = @ref = extract_ref_without_atom(@id)
-        @commit = @repo.commit(@ref)
+    if @path.empty? && !@commit && @id.ends_with?('.atom')
+      @id = @ref = extract_ref_without_atom(@id)
+      @commit = @repo.commit(@ref)
 
-        request.format = :atom if @commit
-      end
+      request.format = :atom if @commit
     end
 
     raise InvalidPathError unless @commit