I’m not a fan of the structure the Adobe ColdFusion (ACF) team has moved to for documentation for the recent versions of their product.
A bit of background
With the recent (late May 2014) release of ACFv11, there are now three versions of ACF in which I have varying degrees of interest:
- v9: we are in the final stages of moving our last app from a shared v9 server to one of our dedicated v10 servers,
- v10: our entire dev environment is based on v10, and all of our apps with the noted exception above run on v10 in production, and
- v11: the recent release we’ve watched from a distance as we weigh whether to continue with ACF in the future or shift to Railo as our CFML engine.
My team has used ColdFusion since its Allaire v4 days, and have historically had multiple versions in play across our development and production environments, so the above situation covering three versions is very typical for us. In fact, having all of our dev and production environments based on a single version of ACF as we (almost) do now represents the first time in at least 10 years we’ve been able to achieve this. I don’t believe we are unique in this: any developer moving between versions of the product (or even considering such a migration) will be working with at least two versions of the language and/or the documentation before and during their migration effort.
In addition, I built and continue to maintain a CFML language mode for ActiveState’s Komodo IDE and Edit editors, providing syntax highlighting and tag/tag attribute completion. The tag/tag attribute completion is specific to each CFML version, allowing the user to designate which version of the language is to be used as the basis for which tags and which attributes are to be provided as options to the user. I rely heavily on version-specific documentation to build each of these version-specific implementations.
The problem with the current wiki approach
In recent versions of ACF up through v9, each version had comprehensive documentation sets available both online and as downloadable PDFs. Each of these documentation sets were separate and distinct, and the online versions made it very straightforward to shift between versions. With v10, there is a downloadable PDF version of the documents (thanks to Adam Cameron for pointing me toward those) but the only references to it are not particularly easy to find (search the wiki for “archive” — how obvious is that if you are looking for v10 documentation?). Googling for “adobe coldfusion 10 documentation” does not yield that set of documents in the first page of results. Further, there does not seem to be an online version of some portions of the v10 (such as the tag/function reference). The current online version of the documentation is maintained as part of a wiki that does not contain discrete sections for different versions of the product or language, and for the most part appears to be focused on v11.
The old version-specific implementation of the online docs has the tremendous benefit to the user of being crystal clear as to what capabilities are available in a given version of the language (e.g., which attributes are available for a given tag, what functions/function arguments are available). If I am working on an app currently running on version “x” of ACF, I typically want to see only the version “x” documentation for that tag.
The current wiki-based documentation set, however, does not have that clear distinction between versions of the product or language. This makes differentiating between versions for tags, attributes, supported attribute values, functions, etc., in terms of what is valid and supported between versions far more challenging and error-prone than in previous versions. If I care about the v10 implementation of the cfzip tag, for instance, I have to either use the off-line version of the docs or make sure I look at the “history” portion of the relevant tag page and then mentally remove the new attributes added for v11 (“password” and “encryptionalgorithm”, in this particular case) as I scan down through the attribute documentation — particularly given that there is nothing within the description of the individual attributes indicating their recent addition in v11 (and in the case of the “password” attribute, it seems to be missing altogether from the attribute list).
A better approach?
It seems to me that a better approach would be for separate, discrete version-specific sections within the wiki. The language reference — along with the supporting documents identifying additions, removals, and deprecations — is one example of where this would make the documentation much easier to use. The v10 portion of the reference would always be specific to v10 and would not (should not?) need to contain any v11 content. The v11 portion of the reference would presumably start as a clone of the v10 portion of the documentation, and could evolve along with the language as v11 was developed. As work on v12 is started, the v11 portion would be cloned as a draft and evolve independently from the sections covering previous versions.
The current wiki approach is likely to get more and more unwieldy as additional versions of the product and the language are covered within the current wiki structure. Take the page listing deprecations and removals as an example. Besides being in drastic need of updates as of this writing for completeness and currency with v11, this page — based on its current structure — will get more and more unwieldy as additional versions have to be covered: more rows to cover features being deprecated or removed, and more columns for subsequent versions? The current approach just does not seem to scale for pages such as this.
Note that I am not taking issue with the use of a CMS or wiki for the documentation itself as much as what I see as a poor decision of how to structure the documentation within the tool the ACF team selected.
Finding documentation for earlier, but still-supported, versions of a product should not be difficult but in this case it is getting harder. I’d like to believe the ACF documentation team will recognize this and restructure the documentation set before it collapses under its own weight and degenerates even further in terms of being usable and useful.
And the off-line docs?
The current wiki structure — which seems to be focused mostly on the current language version — also raises the question for me as to whether a similar set of downloadable v11 references will be made available now that the product is available or as the wiki gets refocused on v12 (presumably in the near future, immediately after all of the existing v9/10/11 bugs have been resolved). That’s a separate but important and relevant question. I hope they do continue making that format available, as those downloadable PDFs have repeatedly proven valuable for me and my team at various times.