Awaiting Mojolicious

Joel Berger

Purdue Perl Mongers

September 9, 2020

What is Mojolicious?

An amazing real-time web framework
A powerful web development toolkit
Designed from the ground up
... based on years of experience developing Catalyst

Portable
No non-core dependencies
Batteries included
Real-time and non-blocking
"... perfect for building highly scalable web services"
~8k lines of code in lib
~11k tests (~93% coverage)
Easy to install (secure, only takes one minute!)

curl -L https://cpanmin.us | perl - -M https://cpan.metacpan.org -n Mojolicious

Getting Help

Let's begin

Async is a Hero's Journey

Oh and of course ...

Hello World!

ex/hello/world/app.pl

Hello World! Test

ex/hello/world/test.t

Hello World! Test

ex/hello/world/test.t

Hello World! Test

ex/hello/world/test.t

Hello World! Test

ex/hello/world/test.t

What actually happened?

text encoded with utf8
default content-type is text/html

Hello 🌐!

ex/hello/format/app.pl

Hello 🌐!

ex/hello/format/app.pl

Hello 🌐!

ex/hello/format/app.pl

Hello 🌐! Test

ex/hello/format/test.t

Meeting New Friends

Hello $user!

ex/hello/user/app.pl

Hello $user!

ex/hello/user/app.pl

Hello $user!

ex/hello/user/app.pl

Hello $user!

ex/hello/user/app.pl

Hello $user!

ex/hello/user/app.pl

Hello $user! Test

ex/hello/user/test.t

#HanShotFirst

Other Formats?

JSON

ex/hello/json/app.pl

JSON

ex/hello/json/app.pl

JSON Tests

ex/hello/json/test.t

JSON Tests

ex/hello/json/test.t

JSON Tests

ex/hello/json/test.t

JSON Tests

ex/hello/json/test.t

Templates

ex/hello/template/app.pl

Templates

ex/hello/template/app.pl

Templates

ex/hello/template/app.pl

CSS Selectors in Tests

ex/hello/template/test.t

CSS Selectors in Tests

ex/hello/template/test.t

Because we've come this far ...

Luke, you've turned off your targeting computer!

Content Negotiation

ex/hello/content_negotiation/app.pl

Content Negotiation

ex/hello/content_negotiation/app.pl

Content Negotiation

ex/hello/content_negotiation/app.pl

Testing Content Negotiation

ex/hello/content_negotiation/test.t

Testing Content Negotiation

ex/hello/content_negotiation/test.t

Other Ways to Negotiate

ex/hello/content_negotiation/test.t

Let's Build a Doc Fetching App

Goal:

Display Docs Fetched From MetaCPAN

Simple MetaCPAN App

ex/metacpan/simple/app.pl

Mocking An External Service

Aren't you a little short for a storm trooper?

Mocking An External Service

ex/metacpan/simple/test.t

How do we use this mock?

Mocking An External Service

Mojo::UserAgent
- server for relative urls
- accepts a Mojolicious app
Attach mock app to the main app's ua
MetaCPAN url is configurable!

ex/metacpan/simple/test.t

Test Simple MetaCPAN App

ex/metacpan/simple/test.t

Smart URL Manipulation

ex/metacpan/url/app.pl

Smart URL Manipulation

ex/metacpan/url/app.pl

Smart URL Manipulation

ex/metacpan/url/app.pl

Goal:

Fix Link URLs

Mojo::DOM in Action