Vincent Paulis: From IT to brewery

I grew up in Spa, studied IT in Liege. I like comic strips. My company is called Bridge IT. A few years ago I adapted my company to officially sell beer. Brasserie du Point, le Gout du Plaisir. If you would stop working in IT, what would you do? I followed a micro brewery training. And I have a comic from Renaud, a well known comic artist, on my beer.

Andreas Jung: Typesense integration for Plone

A new full text solution for Plone 6.

A long time ago I created Products.TextIndexNG3, but after a long time it died. I was searching for a decent replacement. I came across Typesense, a few fault-tolerant, full text search solution. Faceted search.

The browser gets javascript from Plone and then talks directly to the Typesense server, so it is very fast.

Every widget is configured through javascript, very customisable.

You can deploy it on-premise or in a private cloud, either as single binary or as Dicker,.

Code: https://github.com/zopyx/zopyx.typesense

Mikel Larreategi: volto-react-table-widget

We had a use case for a kind of datagridfield. Standard stuff worked okay, but hat if the user needs more than 1000 rows? The browser dies.

How about react-table? Really fast. We integrated it into Volto.

For bonus points: CSV export import.

See https://github.com/eea/volto-react-table-widget

Erico Andrei: collective.elasticsearch

Developed originally by Nathan van Gheem. The Brazilian electoral justice site uses this. We have been updating it to Python 3. Also integrates with Volto.Simple to configure. Specify which indexes you want to use for Elasticsearch, press a button, and it will migrate. You can even delete the indexes from the portal catalog.

See https://github.com/collective/collective.elasticsearch

Fred van Dijk: Improv wisdom

Useful self help for your personal life. And how to participate in the Plone Community.

Improv wisdom is a book from 2005 by Patricia Plan Madson. See http://improvwisdom.com/

Improvisation theater: earlier in life I thought: how can this possibly be fun?

I realised today that this is also an interesting take on how the Plone community works.

Ideas from the book:

1. Say yes. Be more adventurous. Don't say no by default.
2. Don't prepare. Give up planning.
3. Just show up. Just being somewhere enables things.
4. Start anywhere.
5. Be average. Dare to be dull. Be nothing special.
6. Read the book.

Philip Bauer: What's awesome?

A community-curated list of awesome Plone add-ons: https://github.com/collective/awesome-plone

A curated list of things that make Volto awesome: https://github.com/collective/awesome-volto

We need you to help with this list: create an issue or pull request to add packages to these lists, or to remove no longer relevant ones.

It is fine to add your own, you are good.

Jon Pentland: Volto use case

NSW Government released a design system In 2018, now third version, we updated it. Result is 29 new Volto components. Hundreds of variations.

Lessons learned:

• Time consuming to convert extern html/css into Volto components
• Lots of shadows of core were needed, which makes it hard to upgrade.
• Other than that, upgrading Volto is pretty painless.
• We have same idea as https://github.com/collective/collective.patchwatcher

See https://github.com/pretagov/nsw-design-system-plone6

Victor Fernandez De Alba: Auto login

There was some problem that I created a fix for as Chrome extension. Click it and you are logged in. Also works in Firefox.

See https://github.com/collective/plone6-autologin-extension

Jens Klein: pipx

When you install an executable Python based tool, for example cookie cutter, this pollutes your virtual environment. pipx creates virtual envs on the fly, one for each tool. It updates, unless you tell it not to. Just use e.g. pipx run black. Or pipx run --spec zest.releaser fullrelease if the command differs from the package name

Flip McFadden: POSKeyError: how not to fix this

This is a serious talk.

You could use backups, but those are for the weak. So you have a POSKeyError. I like to debug things. A lot of people tell you how to do things, for example this smart guy. Don't belief him, that would be boring.

So try stuff. Use RelStorage. Reindex. Get advice from community forums. Step six or so: invent a new word: Kadosectomy. We will remove a bucket from the BTree. Seventh step: manually bisect a BTree and delete the bucket. Remove the BTree. Replace it with a fresh copy. Your problem is now fixed, and you can let someone else fix the AttributeError.

Haiku is a software as a service CMS utilising Plone as the engine. Haiku is aimed at research and higher education institutes. With over 140 websites at Oxford University using Haiku, we will talk about some of its key features and the long anticipated upgrade from Plone 4 to Plone 6, covering the good, the bad, and the epic. We will cover the small fish in the logistical pond, as well as the whales under the water.

The University of Oxford lets you do what you want to do. No one tells you. You can hire your nephew to build a website. Not always good for stability.

After a few pilot projects we are at 140 websites running Haiku. Non technical site owners can theme their site.

Now we want to move this beast to Plone 6. With a small team we had fear of the unknown: what dangers did we not know about? So we asked Philip Bauer and Lukas Zdych as external consultants and programmers.

Requirements for the migration: Keep all features and UX. Usually not a good idea, you would use a relaunch, do new things or theming. But here it looked good already, so it was okay to do it this way.

• Content: everything was already Dexterity, so that is modern.
• A ton on code, 2000 Python files, 500 page templates, good quality. The test coverage was not good though, so it was hard to say if a change was good.
• collective.cover was used a lot. I thought of going to Mosaic, but there was already work getting pretty close to Plone 5.2, so we went for it.

Since it was Dexterity already, we chose in-place migration. Now I am not so sure, exportimport would have been good too. We targeted Plone 6 alpha as soon as possible.

Initial task: update application code for Python 3. Lots is automated, but there is still manual work. After a while we got everything working on Python 3, and we could export and import the content, so we decided to change plans: use exportimport.

With exportimport you do not write upgrade steps when you need something special, but you write migration hooks. The project lead to some code and examples added in exportimport. For details on migration code, see the migration best practices training.

Lessons learned:

• collective.cover is actually great.
• collective.exportimport can solve even the toughest migrations, and is faster by magnitudes. You also get earlier results: you can export and import just one content type, or one part of the site. It makes migrations affordable. About 15 procent of the time Philip billed for this project was for the real migration of data, the rest for improvements in the code.

We have context behaviours to enable features on content items.

Comment from Kim: you can replace Oxford with Leuven and give basically the same presentation.

Module Federation is a JavaScript technology based on webpack that handles dependency resolution and the loading/importing of modules, even if they come from external, remote bundles.

A bundle is a set of JavaScript modules which provides some functionality and can be run on its own. A typical web project often includes multiple bundles to provide all the necessary JavaScript functionality. In Plone, Module Federation helps us to prevent loading the same dependencies multiple times.

Think of a Plone add-on with a JavaScript bundle which uses Leaflet, Select2 and jQuery. Those dependencies are also used by the Plone core JavaScript bundle "Mockup" and other add-ons. These dependencies can - and should - be shared among the different bundles.

This talk explains the concepts behind Module Federation and how we use it in Plone to optimize loading speed.

Module Federation is a feature that landen in webpack 5. It helps for loading javascript only once, and in smaller chunks, as needed. Recently it was extracted as separate library.

Think of two bundles that both load a version of Patternslib. With Module Federation, we load the highest compatible version, which is specified in package.json.

Module Federation was invented by Zack Jackson in 2018. He wanted multiple small applications to work together without loading code multiple times.

For Plone 6, the whole Mockup stack was rewritten, this was ongoing. But how would we do add-ons? If they just needed jQuery, it should be alright, but how about add-ons that need more. I then found out about Module Federation. Manfred Steyer helped me, he lives close to me and he already spoke about Angular at the Plone conference in Barcelona. At the BuschenschankSprint we managed to merge this approach and release Mockup 8. Zack Jackson added an issue in Patternslib with some more possible improvements. It is nice that these people at the core of Module Federation are involved in Patternslib.

To use this in a new add-on, use bobtemplates.plone 6.0b14/15 or higher, or use a template.

Question: Could this help Volto too?
Answer: Yes, that should help. For Classic Plone, the main bundle went from 1.5 MB minified to 300 kB normal. Plus the chunks then, but those are only loaded when needed.

This demo covers how the automated release works on Plone 6 projects ( frontend and backend ) for the github.com/eea Volto add-ons and Python eggs.

On each release on frontend and backend projects, a text is extracted that contains all the relevant information using the changelog of the updated Volto add-ons, Python eggs and the Plone/Volto releases. The unified changelog is then saved on the release on GitHub, and can later be viewed in the control panel from volto-eea-kitkat addon.

The GitHub repositories eea/eea-website-frontend and eea/eea-website-backend will be used in the demo. The automation jobs are running in Jenkins.

How is this done? On the backend you have a Plone site with eea.kitkat and on the front end volto-eea-kitkat. This saves old versions and update date in Plone registry. Plus Volto code.

We have the eea/plone-backend Docker image, based on plone/plone-backend. And then an image per project.

For Python egg releases, we use the GitFlow procedure, using eea.docker.gitflow. This means any commit to master is considered to be fine for a release. We extract the change log text from the commits, and is reviewed before merge.

On the front end we use auto-changelog.

When we release a new version of a Volto add-on, a script goes to all our other add-ons, and edits the package.json to update the version.

Theming by use case for Classic UI. Creating a theme for Plone from scratch was never that easy! The talk shows how to create simple but beautiful themes for Plone's Classic UI with different use cases in mind.

 I am sad, I wanted to stand here with a few shiny new themes for the conference. But I got a cold and it did not work out. Some will come though.

The good news: theming is fun again. The markup of Plone 6 Classic UI is Bootstrap 5. You can create beautiful things in minutes by simply using specific classes, copying some examples from Bootstrap. I will show screen shots, and especially check out the ones with forms: they have no styles, they just like fine already. If you need javascript, the story is much simpler. If you only need jQuery, it is there already.

You can check the training documentation to see how theming works, in various ways depending on your use case. Spoiler: it is easy.

We use Bootstrap variables. There is basic behaviour like rounded corners. You may just need five lines to end up with a very different look and feel. You can base your theme on the default Plone theme called Barceloneta, or you can simply start from scratch. Copy an example and you are done. In most cases you can copy the code also in the TinyMCE editor and it will work. You might need to allow a few more attributes in the html filter, which is there for security.

You can use all Bootstrap icons.

Example theme: plonetheme.tokyo. Example site and code. This is for Plone 5.2. I had no time to update it to Plone 6 yet, but it is mostly deleting code. Let me know what changes you would like to see.

Another example, plonetheme.munich. Two columns, portlets aside from the content. I do not recommend to use this in a project, or extend this. But look at it as an example of how you can have a minimalistic approach of what is necessary.

I do not like the default toolbar much. I have created collective.sidebar instead. Bring toolbar and navigation together.

Main take away: create a minimal theme, adjust some templates, it is fine to change the main template, cleanup, be lazy and use Bootstrap.