Agile Web Development with Rails, Edition 4
6.1 Iteration A1: Creating the Products Maintenance Application
Table of Contents
2 Instant Gratification
We start with a simple "hello world!" demo application and in the process verify that everything is installed correctly.
Create the application
bundle exec /home/rubys/git/rails/railties/bin/rails new demo1 --skip-bundle
create
create README.rdoc
create Rakefile
create config.ru
create .gitignore
create Gemfile
create app
create app/assets/javascripts/application.js
create app/assets/stylesheets/application.css
create app/controllers/application_controller.rb
create app/helpers/application_helper.rb
create app/views/layouts/application.html.erb
create app/assets/images/.keep
create app/mailers/.keep
create app/models/.keep
create app/controllers/concerns/.keep
create app/models/concerns/.keep
create bin
create bin/bundle
create bin/rails
create bin/rake
create bin/setup
create config
create config/routes.rb
create config/application.rb
create config/environment.rb
create config/secrets.yml
create config/environments
create config/environments/development.rb
create config/environments/production.rb
create config/environments/test.rb
create config/initializers
create config/initializers/assets.rb
create config/initializers/backtrace_silencers.rb
create config/initializers/cookies_serializer.rb
create config/initializers/filter_parameter_logging.rb
create config/initializers/inflections.rb
create config/initializers/mime_types.rb
create config/initializers/session_store.rb
create config/initializers/to_time_preserves_timezone.rb
create config/initializers/wrap_parameters.rb
create config/locales
create config/locales/en.yml
create config/boot.rb
create config/database.yml
create db
create db/seeds.rb
create lib
create lib/tasks
create lib/tasks/.keep
create lib/assets
create lib/assets/.keep
create log
create log/.keep
create public
create public/404.html
create public/422.html
create public/500.html
create public/favicon.ico
create public/robots.txt
create test/fixtures
create test/fixtures/.keep
create test/controllers
create test/controllers/.keep
create test/mailers
create test/mailers/.keep
create test/models
create test/models/.keep
create test/helpers
create test/helpers/.keep
create test/integration
create test/integration/.keep
create test/test_helper.rb
create tmp/cache
create tmp/cache/assets
create vendor/assets/javascripts
create vendor/assets/javascripts/.keep
create vendor/assets/stylesheets
create vendor/assets/stylesheets/.keep
bundle install --local
Resolving dependencies...
Using rake 12.0.0
Using qu 0.2.0 from source at `/home/rubys/git/qu-rails`
Using i18n 0.8.4
Using minitest 5.3.3
Using thread_safe 0.3.6
Using builder 3.2.3
Using erubis 2.7.0
Using mini_portile2 2.1.0
Using rack 1.6.8
Using thor 0.19.4
Using mime-types-data 3.2016.0521
Using arel 6.0.4
Using bundler 1.15.1
Using concurrent-ruby 1.0.5
Using sqlite3 1.3.13
Using sass 3.4.24
Using tilt 2.0.7
Using execjs 2.7.0
Using coffee-script-source 1.12.2
Using turbolinks-source 5.0.3
Using multi_json 1.12.1
Using json 1.8.6
Using rdoc 4.3.0
Using byebug 9.0.6
Using debug_inspector 0.0.3
Using tzinfo 1.2.3
Using nokogiri 1.7.2
Using rack-test 0.6.3
Using mime-types 3.1
Using sprockets 3.7.1
Using uglifier 3.2.0
Using coffee-script 2.4.1
Using turbolinks 5.0.1
Using sdoc 0.4.2
Using binding_of_caller 0.7.2
Using activesupport 4.2.8 from source at `/home/rubys/git/rails`
Using loofah 2.0.3
Using mail 2.6.5
Using rails-deprecated_sanitizer 1.0.3
Using globalid 0.4.0
Using activemodel 4.2.8 from source at `/home/rubys/git/rails`
Using jbuilder 2.6.4
Using spring 2.0.2
Using rails-html-sanitizer 1.0.3
Using rails-dom-testing 1.0.8
Using activejob 4.2.8 from source at `/home/rubys/git/rails`
Using activerecord 4.2.8 from source at `/home/rubys/git/rails`
Using actionview 4.2.8 from source at `/home/rubys/git/rails`
Using actionpack 4.2.8 from source at `/home/rubys/git/rails`
Using railties 4.2.8 from source at `/home/rubys/git/rails`
Using actionmailer 4.2.8 from source at `/home/rubys/git/rails`
Using sprockets-rails 3.2.0
Using qu-rails 0.2.0 from source at `/home/rubys/git/qu-rails`
Using coffee-rails 4.1.1
Using jquery-rails 4.3.1
Using rails 4.2.8 from source at `/home/rubys/git/rails`
Using sass-rails 5.0.6
Using web-console 2.3.0
Bundle complete! 13 Gemfile dependencies, 58 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
Start the server.
get /
Getting started
Here’s how to get rolling:
-
Use bin/rails generate
to create your models and controllers
To see all available options, run it without parameters.
-
Set up a root route to replace this page
You're seeing this page because you're running in development mode and you haven't set a root route yet.
Routes are set up in config/routes.rb.
-
Configure your database
If you're not using SQLite (the default), edit config/database.yml with your username and password.
See what files were created
ls -p
app/ config/ db/ Gemfile.lock log/ Rakefile test/ vendor/
bin/ config.ru Gemfile lib/ public/ README.rdoc tmp/
Create a simple controller
rails generate controller Say hello goodbye
Expected string default value for '--helper'; got true (boolean)
Expected string default value for '--assets'; got true (boolean)
create app/controllers/say_controller.rb
route get 'say/goodbye'
route get 'say/hello'
invoke erb
create app/views/say
create app/views/say/hello.html.erb
create app/views/say/goodbye.html.erb
invoke test_unit
create test/controllers/say_controller_test.rb
invoke helper
create app/helpers/say_helper.rb
invoke test_unit
invoke assets
invoke coffee
create app/assets/javascripts/say.coffee
invoke scss
create app/assets/stylesheets/say.scss
edit app/controllers/say_controller.rb
class SayController < ApplicationController
def hello
end
def goodbye
end
end
Restart the server.
Attempt to fetch the file - note that it is missing
get /say/hello
Say#hello
Find me in app/views/say/hello.html.erb
Replace file with a simple hello world
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
This time it works!
get /say/hello
Hello from Rails!
Add a simple expression
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
<p>
It is now <%= Time.now %>
</p>
get /say/hello
Hello from Rails!
It is now 2017-06-02 09:40:29 -0400
Evaluate the expression in the controller.
edit app/controllers/say_controller.rb
class SayController < ApplicationController
def hello
@time = Time.now
end
def goodbye
end
end
Reference the result in the view.
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
<p>
It is now <%= @time %>
</p>
get /say/hello
Hello from Rails!
It is now 2017-06-02 09:40:29 -0400
Replace the goodbye template
edit app/views/say/goodbye.html.erb
<h1>Goodbye!</h1>
<p>
It was nice having you here.
</p>
get /say/goodbye
Goodbye!
It was nice having you here.
Add a link from the hello page to the goodbye page
edit app/views/say/hello.html.erb
<h1>Hello from Rails!</h1>
<p>
It is now <%= @time %>
</p>
<p>
Time to say
<%= link_to "Goodbye", say_goodbye_path %>!
</p>
get /say/hello
Hello from Rails!
It is now 2017-06-02 09:40:29 -0400
Time to say
Goodbye!
Add a link back to the hello page
edit app/views/say/goodbye.html.erb
<h1>Goodbye!</h1>
<p>
It was nice having you here.
</p>
<p>
Say <%= link_to "Hello", say_hello_path %> again.
</p>
get /say/goodbye
Goodbye!
It was nice having you here.
Say Hello again.
Intentionally introduce a typo in the code
edit app/controllers/say_controller.rb
class SayController < ApplicationController
def hello
@time = Time.know
end
def goodbye
end
end
get /say/hello
HTTP Response Code: 500
NoMethodError
in SayController#hello
undefined method `know' for Time:Class
Extracted source (around line #4):
2
3
4
5
6
7
|
def hello
#START_HIGHLIGHT
@time = Time.know
#END_HIGHLIGHT
end
|
Extracted source (around line #4):
2
3
4
5
6
7
|
module ImplicitRender
def send_action(method, *args)
ret = super
default_render unless performed?
ret
end
|
Extracted source (around line #198):
196
197
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200
201
|
# which is *not* necessarily the same as the action name.
def process_action(method_name, *args)
send_action(method_name, *args)
end
# Actually call the method associated with the action. Override
|
Extracted source (around line #10):
8
9
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11
12
13
|
def process_action(*) #:nodoc:
self.formats = request.formats.map(&:ref).compact
super
end
# Check for double render errors and set the content_type after rendering.
|
Extracted source (around line #20):
18
19
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23
|
def process_action(*args)
run_callbacks(:process_action) do
super
end
end
|
Extracted source (around line #117):
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120
|
def call(env)
block = env.run_block
env.value = !env.halted && (!block || block.call)
env
end
end
|
Extracted source (around line #117):
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117
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120
|
def call(env)
block = env.run_block
env.value = !env.halted && (!block || block.call)
env
end
end
|
Extracted source (around line #555):
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555
556
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558
|
def compile
@callbacks || @mutex.synchronize do
final_sequence = CallbackSequence.new { |env| Filters::ENDING.call(env) }
@callbacks ||= @chain.reverse.inject(final_sequence) do |callback_sequence, callback|
callback.apply callback_sequence
end
|
Extracted source (around line #505):
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504
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506
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508
|
def call(*args)
@before.each { |b| b.call(*args) }
value = @call.call(*args)
@after.each { |a| a.call(*args) }
value
end
|
Extracted source (around line #505):
503
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505
506
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508
|
def call(*args)
@before.each { |b| b.call(*args) }
value = @call.call(*args)
@after.each { |a| a.call(*args) }
value
end
|
Extracted source (around line #92):
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95
|
runner = callbacks.compile
e = Filters::Environment.new(self, false, nil, block)
runner.call(e).value
end
end
|
Extracted source (around line #778):
776
777
778
779
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781
|
module_eval <<-RUBY, __FILE__, __LINE__ + 1
def _run_#{name}_callbacks(&block)
__run_callbacks__(_#{name}_callbacks, &block)
end
RUBY
end
|
Extracted source (around line #81):
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80
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84
|
# end
def run_callbacks(kind, &block)
send "_run_#{kind}_callbacks", &block
end
private
|
Extracted source (around line #19):
17
18
19
20
21
22
|
# process_action callbacks around the normal behavior.
def process_action(*args)
run_callbacks(:process_action) do
super
end
end
|
Extracted source (around line #29):
27
28
29
30
31
32
|
private
def process_action(*args)
super
rescue Exception => exception
request.env['action_dispatch.show_detailed_exceptions'] ||= show_detailed_exceptions?
rescue_with_handler(exception) || raise(exception)
|
Extracted source (around line #32):
30
31
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35
|
ActiveSupport::Notifications.instrument("process_action.action_controller", raw_payload) do |payload|
begin
result = super
payload[:status] = response.status
result
ensure
|
Extracted source (around line #164):
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164
165
166
167
|
def instrument(name, payload = {})
if notifier.listening?(name)
instrumenter.instrument(name, payload) { yield payload if block_given? }
else
yield payload if block_given?
end
|
Extracted source (around line #20):
18
19
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|
start name, payload
begin
yield payload
rescue Exception => e
payload[:exception] = [e.class.name, e.message]
raise e
|
Extracted source (around line #164):
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164
165
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167
|
def instrument(name, payload = {})
if notifier.listening?(name)
instrumenter.instrument(name, payload) { yield payload if block_given? }
else
yield payload if block_given?
end
|
Extracted source (around line #30):
28
29
30
31
32
33
|
ActiveSupport::Notifications.instrument("start_processing.action_controller", raw_payload.dup)
ActiveSupport::Notifications.instrument("process_action.action_controller", raw_payload) do |payload|
begin
result = super
payload[:status] = response.status
|
Extracted source (around line #250):
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253
|
request.filtered_parameters.merge! wrapped_filtered_hash
end
super
end
private
|
Extracted source (around line #18):
16
17
18
19
20
21
|
# and it won't be cleaned up by the method below.
ActiveRecord::LogSubscriber.reset_runtime
super
end
def cleanup_view_runtime
|
Extracted source (around line #137):
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137
138
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140
|
@_response_body = nil
process_action(action_name, *args)
end
# Delegates to the class' #controller_path
|
Extracted source (around line #30):
28
29
30
31
32
33
|
def process(*) #:nodoc:
old_config, I18n.config = I18n.config, I18nProxy.new(I18n.config, lookup_context)
super
ensure
I18n.config = old_config
end
|
Extracted source (around line #196):
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199
|
@_env = request.env
@_env['action_controller.instance'] = self
process(name)
to_a
end
|
Extracted source (around line #13):
11
12
13
14
15
16
|
def dispatch(action, request)
set_response!(request)
super(action, request)
end
def response_body=(body)
|
Extracted source (around line #237):
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|
end
else
lambda { |env| new.dispatch(name, klass.new(env)) }
end
end
end
|
Extracted source (around line #74):
72
73
74
75
76
77
|
def dispatch(controller, action, env)
controller.action(action).call(env)
end
def normalize_controller!(params)
|
Extracted source (around line #74):
72
73
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75
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77
|
def dispatch(controller, action, env)
controller.action(action).call(env)
end
def normalize_controller!(params)
|
Extracted source (around line #43):
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44
45
46
|
end
dispatch(controller, params[:action], req.env)
end
def prepare_params!(params)
|
Extracted source (around line #43):
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43
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45
46
|
req.path_parameters = set_params.merge parameters
status, headers, body = route.app.serve(req)
if 'pass' == headers['X-Cascade']
req.script_name = script_name
|
Extracted source (around line #30):
28
29
30
31
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33
|
def serve(req)
find_routes(req).each do |match, parameters, route|
set_params = req.path_parameters
path_info = req.path_info
script_name = req.script_name
|
Extracted source (around line #30):
28
29
30
31
32
33
|
def serve(req)
find_routes(req).each do |match, parameters, route|
set_params = req.path_parameters
path_info = req.path_info
script_name = req.script_name
|
Extracted source (around line #817):
815
816
817
818
819
820
|
req = request_class.new(env)
req.path_info = Journey::Router::Utils.normalize_path(req.path_info)
@router.serve(req)
end
def recognize_path(path, environment = {})
|
Extracted source (around line #24):
22
23
24
25
26
27
|
def call(env)
status, headers, body = @app.call(env)
if etag_status?(status) && etag_body?(body) && !skip_caching?(headers)
original_body = body
|
Extracted source (around line #25):
23
24
25
26
27
28
|
case env[REQUEST_METHOD]
when "GET", "HEAD"
status, headers, body = @app.call(env)
headers = Utils::HeaderHash.new(headers)
if status == 200 && fresh?(env, headers)
status = 304
|
Extracted source (around line #13):
11
12
13
14
15
16
|
def call(env)
status, headers, body = @app.call(env)
if env[REQUEST_METHOD] == HEAD
[
|
Extracted source (around line #27):
25
26
27
28
29
30
|
end
@app.call(env)
end
private
|
Extracted source (around line #260):
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263
|
def call(env)
@app.call(env)
ensure
session = Request::Session.find(env) || {}
flash_hash = env[KEY]
|
Extracted source (around line #225):
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224
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226
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228
|
def context(env, app=@app)
prepare_session(env)
status, headers, body = app.call(env)
commit_session(env, status, headers, body)
end
|
Extracted source (around line #220):
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|
def call(env)
context(env)
end
def context(env, app=@app)
|
Extracted source (around line #560):
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561
562
563
|
def call(env)
status, headers, body = @app.call(env)
if cookie_jar = env['action_dispatch.cookies']
unless cookie_jar.committed?
|
Extracted source (around line #36):
34
35
36
37
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39
|
connection.enable_query_cache!
response = @app.call(env)
response[2] = Rack::BodyProxy.new(response[2]) do
restore_query_cache_settings(connection_id, enabled)
end
|
Extracted source (around line #653):
651
652
653
654
655
656
|
testing = env['rack.test']
response = @app.call(env)
response[2] = ::Rack::BodyProxy.new(response[2]) do
ActiveRecord::Base.clear_active_connections! unless testing
end
|
Extracted source (around line #377):
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380
|
end
end
@app.call(env)
end
private
|
Extracted source (around line #29):
27
28
29
30
31
32
|
result = run_callbacks :call do
begin
@app.call(env)
rescue => error
end
end
|
Extracted source (around line #88):
86
87
88
89
90
91
|
def __run_callbacks__(callbacks, &block)
if callbacks.empty?
yield if block_given?
else
runner = callbacks.compile
e = Filters::Environment.new(self, false, nil, block)
|
Extracted source (around line #778):
776
777
778
779
780
781
|
module_eval <<-RUBY, __FILE__, __LINE__ + 1
def _run_#{name}_callbacks(&block)
__run_callbacks__(_#{name}_callbacks, &block)
end
RUBY
end
|
Extracted source (around line #81):
79
80
81
82
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84
|
# end
def run_callbacks(kind, &block)
send "_run_#{kind}_callbacks", &block
end
private
|
Extracted source (around line #27):
25
26
27
28
29
30
|
def call(env)
error = nil
result = run_callbacks :call do
begin
@app.call(env)
rescue => error
|
Extracted source (around line #73):
71
72
73
74
75
76
|
prepare!
response = @app.call(env)
response[2] = ::Rack::BodyProxy.new(response[2]) { cleanup! }
response
|
Extracted source (around line #78):
76
77
78
79
80
81
|
def call(env)
env["action_dispatch.remote_ip"] = GetIp.new(env, self)
@app.call(env)
end
# The GetIp class exists as a way to defer processing of the request data
|
Extracted source (around line #17):
15
16
17
18
19
20
|
def call(env)
_, headers, body = response = @app.call(env)
if headers['X-Cascade'] == 'pass'
body.close if body.respond_to?(:close)
|
Extracted source (around line #28):
26
27
28
29
30
31
|
end
status, headers, body = @app.call(env)
if exception = env['web_console.exception']
session = Session.from_exception(exception)
|
Extracted source (around line #18):
16
17
18
19
20
21
|
def call(env)
app_exception = catch :app_exception do
request = create_regular_or_whiny_request(env)
return @app.call(env) unless request.from_whitelited_ip?
|
Extracted source (around line #18):
16
17
18
19
20
21
|
def call(env)
app_exception = catch :app_exception do
request = create_regular_or_whiny_request(env)
return @app.call(env) unless request.from_whitelited_ip?
|
Extracted source (around line #30):
28
29
30
31
32
33
|
def call(env)
@app.call(env)
rescue Exception => exception
if env['action_dispatch.show_exceptions'] == false
raise exception
|
Extracted source (around line #38):
36
37
38
39
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41
|
instrumenter.start 'request.action_dispatch', request: request
logger.info { started_request_message(request) }
resp = @app.call(env)
resp[2] = ::Rack::BodyProxy.new(resp[2]) { finish(request) }
resp
rescue Exception
|
Extracted source (around line #20):
18
19
20
21
22
23
|
if logger.respond_to?(:tagged)
logger.tagged(compute_tags(request)) { call_app(request, env) }
else
call_app(request, env)
end
|
Extracted source (around line #68):
66
67
68
69
70
71
|
def tagged(*tags)
formatter.tagged(*tags) { yield self }
end
def flush
|
Extracted source (around line #26):
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25
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27
28
29
|
def tagged(*tags)
new_tags = push_tags(*tags)
yield self
ensure
pop_tags(new_tags.size)
end
|
Extracted source (around line #68):
66
67
68
69
70
71
|
def tagged(*tags)
formatter.tagged(*tags) { yield self }
end
def flush
|
Extracted source (around line #20):
18
19
20
21
22
23
|
if logger.respond_to?(:tagged)
logger.tagged(compute_tags(request)) { call_app(request, env) }
else
call_app(request, env)
end
|
Extracted source (around line #21):
19
20
21
22
23
24
|
def call(env)
env["action_dispatch.request_id"] = external_request_id(env) || internal_request_id
@app.call(env).tap { |_status, headers, _body| headers["X-Request-Id"] = env["action_dispatch.request_id"] }
end
private
|
Extracted source (around line #22):
20
21
22
23
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25
|
end
@app.call(env)
end
def method_override(env)
|
Extracted source (around line #18):
16
17
18
19
20
21
|
def call(env)
start_time = clock_time
status, headers, body = @app.call(env)
request_time = clock_time - start_time
if !headers.has_key?(@header_name)
|
Extracted source (around line #28):
26
27
28
29
30
31
|
def call(env)
LocalCacheRegistry.set_cache_for(local_cache_key, LocalStore.new)
response = @app.call(env)
response[2] = ::Rack::BodyProxy.new(response[2]) do
LocalCacheRegistry.set_cache_for(local_cache_key, nil)
end
|
Extracted source (around line #17):
15
16
17
18
19
20
|
old, env[FLAG] = env[FLAG], false
@mutex.lock
response = @app.call(env)
body = BodyProxy.new(response[2]) { @mutex.unlock }
response[2] = body
response
|
Extracted source (around line #120):
118
119
120
121
122
123
|
end
@app.call(env)
end
end
end
|
Extracted source (around line #113):
111
112
113
114
115
116
|
def call(env)
status, headers, body = @app.call(env)
if body.respond_to?(:to_path)
case type = variation(env)
when 'X-Accel-Redirect'
|
Extracted source (around line #518):
516
517
518
519
520
521
|
env["ROUTES_#{routes.object_id}_SCRIPT_NAME"] = env['SCRIPT_NAME'].dup
end
app.call(env)
end
# Defines additional Rack env configuration that is added on each call.
|
Extracted source (around line #165):
163
164
165
166
167
168
|
env["ORIGINAL_FULLPATH"] = build_original_fullpath(env)
env["ORIGINAL_SCRIPT_NAME"] = env["SCRIPT_NAME"]
super(env)
end
# Reload application routes regardless if they changed or not.
|
Extracted source (around line #17):
15
16
17
18
19
20
|
old, env[FLAG] = env[FLAG], false
@mutex.lock
response = @app.call(env)
body = BodyProxy.new(response[2]) { @mutex.unlock }
response[2] = body
response
|
Extracted source (around line #15):
13
14
15
16
17
18
|
def call(env)
status, headers, body = @app.call(env)
headers = HeaderHash.new(headers)
if !STATUS_WITH_NO_ENTITY_BODY.include?(status.to_i) &&
|
Extracted source (around line #88):
86
87
88
89
90
91
|
env["REQUEST_PATH"] ||= [env["SCRIPT_NAME"], env[PATH_INFO]].join
status, headers, body = @app.call(env)
begin
res.status = status.to_i
headers.each { |k, vs|
|
Extracted source (around line #138):
136
137
138
139
140
141
|
si = servlet.get_instance(self, *options)
@logger.debug(format("%s is invoked.", si.class.name))
si.service(req, res)
end
##
|
Extracted source (around line #94):
92
93
94
95
96
97
|
callback.call(req, res)
end
server.service(req, res)
rescue HTTPStatus::EOFError, HTTPStatus::RequestTimeout => ex
res.set_error(ex)
rescue HTTPStatus::Error => ex
|
Extracted source (around line #294):
292
293
294
295
296
297
|
end
call_callback(:AcceptCallback, sock)
block ? block.call(sock) : run(sock)
rescue Errno::ENOTCONN
@logger.debug "Errno::ENOTCONN raised"
rescue ServerError => ex
|
Rails.root: /home/rubys/git/awdwr/edition4/work-226-42/demo1
Request
Parameters:
None
_csrf_token: "YQGPknXZi3Lv7GoOzpJaLFx26qStWNDb2Wo4CQwuKUI="
session_id: "4f23346cd799a9b00d0f0641373e4fd8"
GATEWAY_INTERFACE: "CGI/1.1"
HTTP_ACCEPT: "text/html"
HTTP_ACCEPT_ENCODING: "gzip;q=1.0,deflate;q=0.6,identity;q=0.3"
REMOTE_ADDR: "127.0.0.1"
REMOTE_HOST: "127.0.0.1"
SERVER_NAME: "localhost"
SERVER_PROTOCOL: "HTTP/1.1"
Response
Headers:
None
Intentionally introduce a typo in a URL
get /say/hullo
HTTP Response Code: 404
No route matches [GET] "/say/hullo"
Rails.root: /home/rubys/git/awdwr/edition4/work-226-42/demo1
Routes
Routes match in priority from top to bottom
Request
Parameters:
None
_csrf_token: "YQGPknXZi3Lv7GoOzpJaLFx26qStWNDb2Wo4CQwuKUI="
session_id: "4f23346cd799a9b00d0f0641373e4fd8"
GATEWAY_INTERFACE: "CGI/1.1"
HTTP_ACCEPT: "text/html"
HTTP_ACCEPT_ENCODING: "gzip;q=1.0,deflate;q=0.6,identity;q=0.3"
REMOTE_ADDR: "127.0.0.1"
REMOTE_HOST: "127.0.0.1"
SERVER_NAME: "localhost"
SERVER_PROTOCOL: "HTTP/1.1"
Response
Headers:
None
6.1 Iteration A1: Creating the Products Maintenance Application
Table of Contents