Short-form versus long-form usage
There are often many ways to write markup as a mix of Textpattern and HTML tags to achieve the same functional or presentational objectives. Add in the possibility of plugin tags too, and markup can get lengthy and complex.
When first learning Textpattern, it’s often easier to use a long-form notation; especially if familiar with HTML but moreso if not. In fact, this is how people often construct their markup without giving it much thought. Long-form notation allows seeing standard HTML tags and attributes distinctly from those of Textpattern (and potential plugins). The result is often longer blocks of markup, but it can be easier to understand when learning Textpattern tags.
As one becomes more knowledgable of the tags, and the scope of their functional and presentational attributes, it’s possible to write smaller lengths of markup to achieve the same objectives.
(Note: Advanced functionality can — and often does — involve use of plugin tags too, which tends to increase markup volume, not reduce it, because it extends functionality beyond scope of Textpattern’s core abilities.)
There is no right or wrong way, only the way that makes it easier for you to understand. But the natural tendency for people is to start with long-form notation, then tighten up the their markup over time with a lean toward Textpattern tags. The result, as a side benefit, is often less markup overall (which helps offset the additional markup from plugin tags, when such functionality is used).
We should only need one small example to demonstrate the concept and difference between and long- and short-form construction of markup. Your hands-on with learning Textpattern tags will lead you to discover more.
Consider the following block of standard HTML markup, which defines displaying an image as a figure and caption; a commonly desired way to display images these days:
<figure> <img src="/path/9.jpg"> <figcaption>content</figcaption> </figure>
That’s straightforward and understandable. The 3 essential HTML elements are there, the image path is defined (the name is the image’s ID value in this case), and the caption is readable. But it’s all static. You have to manually write in the image path and caption content. We have not effectively separated content from structure (or presentation if we consider CSS). It’s arguable if an
alt="" attribute is needed alongside a caption in this case (and it might be needed in certain situations), but that would be another manual entry too.
Regardless, you want the power of server-side functionality, which is why you’ve opted to try Textpattern. And, in that respect, you should want to separate content from its markup as much as possible. So let’s look at the two possible ways of writing markup in Textpattern.
HTML and Textpattern tags (long-form)
Textpattern helps you construct dynamic publishing architectures by using Textpattern tags interchangably with HTML, which is easier to grasp than having to know PHP scripting.
Here’s the same markup above but with two different Textpattern tags worked in, and with attributes and attribute values adjusted accordingly. This markup is structured in what can be called long-form notation:
<figure> <txp:images id="9"> <img src="/path/<txp:image_info type="id" /><txp:image_info type="ext" />" /> <figcaption><txp:image_info type="caption" /></figcaption> </txp:images> </figure>
We call this long-form notation because it’s explicit use of static HTML tags for structure and layout, and because we’re not doubling up (or more) on values in Textpattern tag attributes, when possible. If that leaves you scratching your head, it’s exactly why we’re describing the difference now.
Let’s walk through the markup for clarity.
Immediately within the HTML
figure tags are containing Textpattern
… <txp:images id="9"> … </txp:images> …
We need to add this extra tag container, in this case, to make use of the corresponding
image_info tag functionality. That’s the only reason. (A lot of Textpattern tags work in relation to one another like that; a containing parent tag that allows other child tags to do their thing.)
We first see the
image_info tag used in this line multiple times:
… … <img src="/path/<txp:image_info type="id" /><txp:image_info type="ext" />" /> … … …
And again in the line after:
… … … <figcaption><txp:image_info type="caption" /></figcaption> … …
In each line, the
image_info tag is explicitly calling a data value for the image in context, in this case the image having ID number 9. It’s all done dynamically now. No manual entry of static content in the templates themselves.
In the first line, the
image_info tag is used twice to pull out the image’s ID number and file extension. Note there’s no “.” added between the ID and extension values, which is because the
ext value for the
type="" attribute already includes the required period.
In the second line, the
image_info tag pulls the image’s caption value that you should always include in the Image details area for the image.
As a frame of reference, the entire block of this long-form markup is 184 characters long, not including line-breaks and indentations.
But character length alone is not the most important consideration. We’ll come back to this point.
Textpattern tags and HTML (short-form)
Now let’s consider the same block of markup in short-form notation. There is no functional difference; it does exactly the same thing as the long-form version of markup above. It’s just written more tightly on the side of Textpattern tags:
<figure> <txp:images> <img src="/images/<txp:image_info type="id, ext" />" /> <txp:image_info type="caption" wraptag="figcaption" /> </txp:images> </figure>
We’ll just highlight the key differences.
First, we’ve removed the image ID attribute from the
… <txp:images> … … … …
This is not a reflection of short-form notation so much as it’s taking advantage of what we call “article context”. In this case, we can assume the markup block is used in context of an article, and the image ID number has been added to the Article image field for the article in which it’s applied. By doing that much, we eliminate having to declare the ID value as an attribute in the
Next, which is an example of short-form notation, we’ve reduced the image file path to a single instance of
image_info by declaring the image ID and file extension attribute values to the sole instance of the tag. You can’t do this arbitrarily with all tag attribute parameters, but in this case it is possible, and the shortening result is obvious:
… … <img src="/images/<txp:image_info type="id, ext" />" /> … … …
Finally, we eliminate the explicite use of the HTML
figcaption tags by using the presentational
wraptag attribute in
image_info. The attribute happens to be one of several common presentational attributes of many Textpattern tags. It allows you to declare any HTML element you want, Textpattern style:
… … … <txp:image_info type="caption" wraptag="figcaption" /> … …
The resulting character count of this block of markup, which is functionally identical to the long-form version previously, is 151 characters, and that’s even with the additional use of the wrapping
images tag. All-in-all shorter than the long-form notation, but not by a lot. (It’s definitely longer than the static HTML version, but that’s the price for having dynamic functionality.)
But character count is not the most important consideration with respect to whether one uses short-form or long-form notation. Indeed, as the markup in the long-form block above shows, some short-form constructions of tag architecture are not much shorter than long-form equivalents, we had to include the
images container tag in order to use the
image_info tag too.
And the character count can change considerably from one block of markup to another depending on what you’re aiming to do. We’ve only demonstrated one simple example. There are many possible situations where your markup blocks in templates or forms could be longer and more complex, and even include tags for plugins you may have installed.
More important than character count is your understanding of the resulting markup — or that of your client’s, if you’re building a website and handing it over to a different administrator — regardless of how markup is written. As long as the markup separates content from static constructs and you (or the client) understands it, you’re doing well.
In summary, long-form notation is generally easier for new Textpattern users to get up to speed with, until they’ve become more familiar with the scope of Textpattern tag functionality. Advanced users of Textpattern generally prefer the short-form notation because it saves character space. But it doesn’t matter either way, as long as the markup is constructed correctly in relation to how Textpattern functions.