Zope cannot find the tutorial examples. You should install the tutorial examples before continuing. Choose "Zope Tutorial" from the product add list in the Zope management screen to install the examples.
If you have already installed the tutorial, you can either follow along manually, or reinstall the tutorial examples. Note: make sure that you have cookies turned on in your browser.So we've seen that the
sightings.htmlpage is built from objects in the
sightingsFolderfolder. How does it work?
sightings.htmltemplate to edit it.
<html> <h1 tal:content="template/title">title</h1> <table border="1"> <tr tal:repeat="sighting container/sightingsFolder/objectValues"> <td tal:content="structure sighting"> Sighting goes here </td> </tr> </table> </html>
Notice how each sighting now has a box drawn around it.
What's going on? The tal:repeat statement iterates over a list of
sightings. The list is defined by the expression
container/sightingsFolder/objectValues. The expression calls the
objectValues method of the
sightingsFolder folder. It returns
all the objects contained by a folder.
sighting part of the repeat statement. It is a local
variable that takes the value of each object in the list in
turn. This variable is used by the the tal:content statement to
insert the contents of each file object inside the table.
You can programmatically build web pages with groups of objects by looping over them and inserting them.
In the next lesson you'll learn about how to manage and display pictures.