John Schinnerer a écrit :

Hello,

--- J Cameron Cooper <jccooper@jcameroncooper.com> wrote:

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First, and I think you know this, recall that you're not including the Image object, but rather an HTML 'img' tag that will display the image.

Yes - in a ZPT referencing the image object automagically generates that tag. I was hoping I could get the same result in a python script without any 'gotchas'. Apparently not...

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There could be any number of problems, but make sure that what you think has an Image object in context actually does. Are you sure that you're not being given a BLOB or a name?

The objects I'm iterating over are instances of an ObjectManager-based class in a product I am building. Each instance contains one Image object, and that is what I am referencing. So afaik I am referencing an image object, yes.

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To get the tag rendered from an Image, you can call the image. So put a pair of parentheses on the end of the name. This should be the

exact

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same effect as the 'tag' method. (I do this by memory, so don't take it as gospel.)

Thanks, I hadn't thought of that - tried it, but still get the error. It is reported as a TALES attribute error but I think that is just what bubbles up from whatever error is generated in the python script when it tries to do:

print(item.art_image())

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Finally, you should re-think doing HTML in a script. That's really what templates are for. You can use scripts for creating the list of items or doing complex transformations, but actually creating the HTML is not usually recommended.

Yes, I know - unless as some say the TAL gets 'too' complicated or convoluted, in which case one 'should' move that logic to a python script - though perhaps not HTML generation. Anyhow...here is my situation:

The number of items returned by a query will vary. So I need to generate a table with a fixed number of columns and a variable number of rows (last row not necessarily full). That is, a 2-D output, not just a 1-D list like in all the TAL 'repeat' examples I've ever seen or done so far. It was something I could figure out how to code in python. It was instant headache to try to code it in TAL.

I am doing it with an explicit control variable in python - to know when to end one row and start another - and I don't know how that's possible in TAL. Is it?

If someone can give an example in TAL of iterating over a variable number of items and generating a 2-D table with a fixed number of columns that would indeed be a more appropriate solution.

I gave you an exemple of nested repeats in a previous post. Now the only thing you need is to add a level of indirection between the result of the query and the TAL code. This is where you handle problems like number of cells per row. Instead of +-------+ +---------+ +-----+ | query | ---> | results | ---> | ZPT | +-------+ +---------+ +-----+ You want +-------+ +---------+ +--------+ +-----+ | query | ---> | results | ---> | script | ---> | ZPT | +-------+ +---------+ +--------+ +-----+ -- bruno bruno@modulix.org --