Introduction
Humans are storytellers. As anyone who knows me can confirm, I definitely enjoy the activity of telling stories. We process and communicate by telling stories. So let me tell you all a story about my life as a web developer the last 7 years. It may just be self-reflection, but hopefully it's also useful for some others. Perhaps we can see my story as a highly personal history of the web.
I always say that what pulls me to software development most is creativity. I am creative; I can't help myself. I enjoy thinking about creativity. So this is also going to be about my creative trajectory over the last 7 years.
Why 7 years? Because in early 2010 I decided to withdraw myself from a software development community I had been involved in for about 12 years previously, and I took new paths after that. It is now early 2017; time to take stock.
Letting go of an intense involvement with a software development project, up to the point where it became part of my identity, was difficult. Perhaps that's a geeky thing to say, but so it is. I needed to process it.
Life after Zope
Zope was a web framework before that concept existed. The modern web framework only materialized sometime in the year 2005, but Zope had been ahead of its time. I was involved with the Zope community from when it was first released, in 1998. I learned a lot from Zope and its community. I made many valued connections with people that last until this day.
Zope helped shape who I am and how I think, especially as a web developer. In 2013 I wrote a retrospective that went into the history of Zope and my involvement with it.
But I did not just process it by writing blog posts. I also processed it creatively.
Frameworks
So I am a web developer. Back in 2010 I saw some people argue that the time of the web framework had passed. Instead, developers should just gather together a collection of building blocks and hook it up to a server using a standard API (WSGI in the case of Python). This would provide more flexibility than a framework ever could.
In a "X considered Y" style post I argued that web frameworks should be considered useful. Not that many people needed convincing, but hey, why not?
I wrote:
The burden of assembling and integrating best of breed components can be shared: that's what the developers of a framework do. And if you base your work on a pre-assembled framework, it's likely to be less work for you to upgrade, because the framework developers will have taken care that the components in the framework work together in newer versions. There is also a larger chance that people will write extensions and documentation for this same assembly, and that is very likely something you may benefit from in the future.
I follow the ReactJS community. The React community definitely is a community that lets you self-assemble a framework out of many parts. This gives that ecosystem flexibility and encourages creativity -- new approaches can be tried and adopted quickly. I like it a lot.
But figuring out how to actually start a React-based project had become a major effort. To get a good development platform, you needed to learn not only about React but also about a host of packaging and build tools: CommonJS and Webpack and npm and Babel and so on. That's quite intimidating and plain work.
So some React developers realized this and created create-react-app which makes it easy to start a working example, with minimal boilerplate code, and with suggestions on how to expand from there. It's a build framework for React that gathers good software in one place and makes it easy to use. It demonstrates how frameworks can make life easier for developers. It even goes a step further and allows you to opt out of the framework once you need more control. Now that's an interesting idea!
Client-side JS as Servant to the Server UI
So frameworks are useful. And in late 2010 I had an idea for a new one. But before I go into it, I will go on a digression on the role of client-side JavaScript on the web.
This is how almost all JavaScript development used to be done and how it's still done today in many cases: the server framework generates the HTML for the UI, and handles all the details of UI interaction in request/response cycles. But sometimes this is not be enough. More dynamic behavior on the client-side is needed. You then write a little bit of JavaScript to do it, but only when absolutely necessary.
This paradigm makes JavaScript the ugly stepsister of whatever the server server programming language is used; a minor servant of Python, Ruby, Java, PHP or whatever. The framework is on the server. JavaScript is this annoying thing you have to use; a limited, broken language. As a web developer you spend as little as time possible writing it.
In short, in this paradigm JavaScript is the servant to the server, which is in charge of the UI and does the HTML generation.
But JavaScript had been gathering strength. The notion of HTTP-based APIs had attracted wide attention through REST. The term AJAX had been coined by 2005. Browsers had become a lot more capable. To exploit this more and more JavaScript needed to be written.
jQuery was first released in 2006. jQuery provided better APIs over sucky browser APIs, and hid incompatibilities between them. Its core concept is the selector: you select things in the web page so you can implement your dynamic behavior. Selectors fit the server-dominant paradigm very well.
Client-side JS as Master of the UI
By 2010, the notion of single-page web application (SPA) was in the air. SPAs promised more powerful and responsive UIs than server-side development could accomplish. The backend is a HTTP API.
This is a paradigm shift: the server framework lets go of its control of the UI entirely, and client-side JavaScript becomes its new master. It encourages a strong separation between UI on the client and business logic on the server. This brings a big benefit: the unit of UI reuse is on the client, not spread between client and server. This makes reuse of UI components a lot easier.
By 2010, I had played with client-side template languages already. I was about to build a few large web applications, and I wanted them to be dynamic and single page. But client-side JavaScript could easily become a mess. I wanted something that would help organize client-side code better. I wanted a higher-level framework.
The idea
So there we finally get to my idea: to create a client side web framework, by bringing over concepts from server frameworks to the client, and to see what happens to them. Cool things happen! We started with templates and then moved to MVC. We created a notion of components you could compose together. We created a client-side form library based on that. In 2011 we released this as Obviel.
For a little while in 2010, early 2011, I thought I was the only one with this cool idea of a client-side web framework. It turns out that I was not: it was a good idea, and so many people had the same idea at about the same time. Even before we released Obviel, I started to hear about Backbone. Ember and Angular soon followed.
I continued working on Obviel for some time. I created a template language with a built-in i18n system for it, and a client-side router. Almost nobody seemed to care.
In 2011 and 2012 we built a lot of stuff with Obviel. In the beginning of 2013 those projects were done. Obviel didn't get any traction in the wider community. It was a project I learned a lot from, so I don't regret it. I can claim deep experience in the area of client-side development.
React
I went to my first JS conference in September of 2013. I had originally submitted a talk about Obviel to it, but it wasn't accepted. Everybody was promoting their shiny new client-side framework by that time.
So was Facebook. Pete Hunt gave a talk about React. This was in fact only the second time React had been introduced to a wider audience. Apparently it went over a lot better than the first time. It certainly made an impression on me: there were some fascinating new ideas in it. The React community became ferment with fascinating new ideas. At the conference I talked to people about another idea I'd had: a client framework that helps coordinate client/server communication; maybe sort of like a database, with transactions that commit UI state to the server? Nobody seemed to know of any at the time. Uh oh. If nobody has the idea at the same time, then it might be a bad one?
Then from the React community came Flux and Redux and Relay and Mobx. I let go of Obviel and started to use React. There is a little irony there: my move client-side frameworks had started with templates, but React actually let go of them.
The Server in Modern Client-side times
In early 2013 I read an interesting blog post which prompted me to write Modern Client-Side Times, in which I considered the changed role of the server web framework if it was to be the servant to JavaScript instead of its master.
I wrote a list of what tasks remain for the server framework:
What remains is still significant, however:
- serving up JSON on URLs with hyperlinks to other URLs
- processing POSTs of JSON content (this may include parts of form validation)
- traversal or routing to content
- integrating with a database (SQLAlchemy in this case)
- authentication - who are you?
- authorization - who can access this URL?
- serve up an initial web page pulling in a whole bunch of static resources (JS, CSS)
I also wrote:
Much of what was useful to a server side web framework is still useful. The main thing that changes is that what goes over the wire from server to client isn't rendered HTML anymore. This is a major change that affects everything, but much does stay the same nonetheless.
I didn't know at the time of writing that I would be working on just such a server web framework very soon.
On the Morepath
In 2013 I put some smaller pieces I had been playing with for a while together and created Morepath, a server Python web framework. I gave an over-long keynote at PyCON DE that year to describe the creative processes that had gone behind it. I gave a more focused talk at EuroPython 2014 that I think works better as an introduction.
I announced Morepath on my blog:
For a while now I've been working on Morepath. I thought I'd say a bit about it here.
Morepath is a Python web micro-framework with super powers. It looks much like your average Python micro-framework, but it packs some seriously power beneath the hood.
One of the surprises of Morepath was the discovery that a web framework that tries to be good at being a REST web server actually works very well as a server web framework as well. That does make sense in retrospect: Morepath is good at letting you build REST services, therefore it needs to be good at HTTP, and any HTTP application benefits from that, no matter whether they render their UI on the client or the server. Still, it was only in early 2015 that Morepath gained official support for server templates.
2014 was full with Morepath development. I announced it at EuroPython. It slowed down a little in 2015, then picked up speed again in 2016.
I'm proud that Morepath is micro in implementation, small in its learning surface, but macro in power. The size of Morepath is another surprise: Morepath itself is currently a little over 2000 lines of Python code, but it does a lot, helped by the powerful Reg (<400 lines) and Dectate (<750 lines) libraries. Morepath offers composable, overridable, extensible applications, an extensible configuration system, an extensible view dispatch system, automated link generation, built-in powerful permission rule system, and lots more. Morepath is like Flask, but with a nuclear fusion generator inside. Seriously. Take a look.
The Future?
Over the last few years Morepath has become a true open source project; we have a small team of core contributors now. And in late 2016 Morepath started to gain a bit more attention in the wider world. I hope that continues. Users that turn into contributors are invaluable for an open source project.
There was a mention of Morepath in an Infoworld article, I was interviewed about it for Podcast__init__, and was also interviewed about it for an upcoming episode of Talk Python to Me.
Ironically I've been writing some Django code lately. I'm new to Django (sort of). I have been reintroduced to the paradigm I started to leave behind 7 years ago. With standard Django, the server rules and JavaScript is this adjunct that you use when you have to. The paradigm works, and for some projects it may be the best approach, but it's definitely not my preferred way to work anymore. But I get to help with architecture and teach a bit so I'll happily take the Django on board.
The Django management UI is cool. It makes me want to implement the equivalent for Morepath with PonyORM and React and Mobx. Or something. Want to help?
I've been itching to do something significant on the client-side again. It's been a little while since I got to do React. I enjoyed attending React Europe 2015 and React Europe 2016. I played with React Native for a bit last year. I want to work with that stuff again.
The space where client and server interacts is fertile with creative potential. That's what I've found with Obviel and React on the client, and with Morepath on the server side. While GraphQL replaces the REST paradigm that Morepath is based around (oops!), I'd enjoy working with it too.
Where might the web be going? I like to think that by being creative I sometimes get to briefly peek into its near future. I hope I can continue to be creative for the next 7 years, as I really enjoy it.
I'm a freelancer, so the clients I work for in part shape my creative future. Hint. Let me know if you have something interesting for me to work on.