Thanks much again, Matt, for your expertise!
On Thu, Dec 3, 2009 at 8:07 PM, Matt Jones <[email protected]> wrote:
>
> On Dec 3, 2009, at 6:08 PM, Dave Porter wrote:
>
> > Hi Owen, Sorry yes this was a bit vague !
> >
> > This is what is currently in the Cookbook index.dryml for the front
> > page
> > So the '<preview-with-more name="recent recipes"
> > with="&Recipe.recent"/
> >> '
> >
> > Is the code that is displaying the list of recipes on the front page.
> >
> > I need to understand how this works ?
> >
>
> To start with, you typically want to figure out the context the tag
> ends up running in. Here, the with= attribute is setting the context
> to Recipe.recent (a named scope on Recipe that sorts models in
> descending order by created_at - it's defined in automatic_scopes).
> The recent scope accepts the number of records to limit the source as
> a parameter, or defaults it to 6 (as in this case).
>
> For the rest, track down the source of preview-with-more; you'll find
> it in rapid_plus.dryml (in the hobo plugin). As an aside, a good text
> editor with "Search all files" pointed at the hobo source is pretty
> much a standard tool - heck, it used to *be* the documentation.
>
> Anyway, the source of preview-with-more:
>
> <!-- Captures the common pattern of a list of "the first few" cards,
> along with a link to the rest. -->
> <def tag="preview-with-more" attrs="name">
> <% name ||= collection_name.pluralize -%>
> <section class="#{name.gsub(' ', '-').dasherize} preview-with-more"
> param="default">
> <h3 param="heading"><%= name.titleize %></h3>
> <a param="more">More <type-name plural lowercase/>...</a>
> <collection param/>
> <a action="new" if="&can_create?(this.new)" param="new-link">New <
> %= this.member_class.view_hints.model_name %></a>
> </section>
> </def>
>
> Most of this should be pretty self-explanatory. The meat of the action
> here is in the collection tag. That's defined over in
> rapid_generics.dryml:
>
> <def tag="collection">
> <ul class="collection #{collection_name :dasherize => true}" merge-
> attrs unless="empty?">
> <li param="item" class="#{scope.even_odd} #{model_id_class}"
> repeat="&select_viewable">
> <do param="default"><card param/></do>
> </li>
> </ul>
> <empty-collection-message param="empty-message"/>
> </def>
>
> This creates the actual list of Recipe cards; note that the card tag
> is just a default here, as calling the collection tag like this:
>
> <collection>
> <some-tag />
> </collection>
>
> Will repeat some-tag instead of card.
>
> Next you look up where the card for Recipe is defined; in this case,
> it's in app/views/taglibs/application.dryml (in the hobocookbook
> source):
>
> <extend tag="card" for="Recipe">
> <old-card merge without-count>
> <before-heading:><gravatar:user size='50' param/></before-heading:>
> <creator-link: replace><div param="user">By: <a:user/></div></
> creator-link:>
> <append-body:>
> <div param="timestamp">
> <if test="&this.created_at == this.updated_at">
> <view:created-at.to-date/>
> </if>
> <else>
> Updated: <view:updated-at.to-date/>
> </else>
> </div>
> </append-body:>
> </old-card>
> </extend>
>
> Note that this is extending the base card (autogenerated in app/views/
> taglibs/auto/rapid/cards.dryml):
>
> <def tag="card" for="Recipe">
> <card class="recipe" param="default" merge>
> <header: param>
> <h4 param="heading"><a><name/></a></h4>
> </header:>
> <body: param>
> <a:user param="creator-link"/>
> <ht key="comments.collection.count" count="&this.comments.size">
> <count:comments param/>
> </ht>
> </body:>
> </card>
> </def>
>
> With the modifiers in the extended definition, the actual definition
> looks more like:
>
> <def tag="card" for="Recipe">
> <card class="recipe" param="default" merge>
> <gravatar:user size='50' param/>
> <header: param>
> <h4 param="heading"><a><name/></a></h4>
> </header:>
> <body: param>
> <div param="user">By: <a:user/></div>
> <ht key="comments.collection.count" count="&this.comments.size">
> <count:comments param/>
> </ht>
> <div param="timestamp">
> <if test="&this.created_at == this.updated_at">
> <view:created-at.to-date/>
> </if>
> <else>
> Updated: <view:updated-at.to-date/>
> </else>
> </div>
> </body:>
> </card>
> </def>
>
> One can follow this rabbit hole for quite a while longer, but I hope
> this helps!
>
> --Matt Jones
>
> --
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>
>
--
Thanks,
Owen
Owen Dall
Barquin International
410-991-0811
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