A true tale from the trenches:
So I�m trying to learn tapestry. I look at my application,
I see something I call a Track, something that�s like a lead,
a follow-up, a continuing series of activities. I think: maybe i could
focus all Track related stuff in a Track page and use a
Block component for each view, track list, track detail, etc.
So I look to the Inspector for some examples and guidelines. I see this:
<span jwcid="specificationBlock">
<span jwcid="showSpecification"/>
</span>
<span jwcid="templateBlock">
<span jwcid="showTemplate"/>
</span>
<span jwcid="propertiesBlock">
<span jwcid="showProperties"/>
</span>
<span jwcid="engineBlock">
<span jwcid="showEngine"/>
</span>
Good! I copy the concept and do this:
<span jwcid="renderBlockForView"/>
<span jwcid="trackListBlock"/>
<span jwcid="showTrackList"/>
<span jwcid="trackDetailBlock"/>
<span jwcid="showTrackDetail"/>
You probably do see it immediately. I didn't. I spent a first ten
confusing minutes wondering why the hell the detail
view rendered, although I obvioulsy told it not to. Then I spent
another hour to re-design my showTrackDetail class to accommodate for
null pointers and such. Still didn't work. Then another hour studying
Tapestry source in order to understand the call sequence. Then I saw it!
<span jwcid="renderBlockForView"/>
<span jwcid="trackListBlock">
<span jwcid="showTrackList"/>
</span>
<span jwcid="trackDetailBlock">
<span jwcid="showTrackDetail"/>
</span>
Anyways, during the journey I probably learned more Tapestry stuff
than I deserve. Was it on purpose?
/Per Norrman
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