Stash
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Optimisation challenge: Dynamic lists with Stash
Support Request
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JUK
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| Posted: 29 September 2014 08:20 AM |
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I like to ask for help to optimise the code below and also solve one problem.
The task is to go through a list of musicians and store them so that we can create an index page with a heading for each letter of the alphabet for which entries exist.
This is the code that populates the lists (working):
{exp:stash:set_list name="list_artists" parse_tags="yes" parse_conditionals="yes" parse_depth="2"}
{exp:channel:entries
channel="music-artist"
orderby="title"
sort="asc"
limit="20"
dynamic="no"
disable="categories|category_fields|member_data|pagination"}
{exp:stash:append_list name="artists_{exp:trunchtml chars='1'}{title}{/exp:trunchtml}" match="#^[{exp:trunchtml chars='1'}{title}{/exp:trunchtml}]#" against="{title}" parse="inward"}
{stash:artist_name}{title}{/stash:artist_name}
{/exp:stash:append_list}
{/exp:channel:entries}
{/exp:stash:set_list}
1. Instead of calling the “trunchtml” extension twice, can’t I store the result in a Stash variable and call that instead?
But how? I couldn’t find a case where Stash variable is reused in the same loop.
2. I also tried to remove the outer Stash tag as I don’t see its need, but then I get no values. Why do I need it?
The above results can be easily output with eg.
<h4>Artists starting with "A":</h4>
{exp:stash:get_list name="artists_A"}
<p>{count}: {artist_name}</p>
{/exp:stash:get_list}
But here’s the problem I could not solve: How can I use just one loop to output all defined lists?
Thank you for your help!
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Mark Croxton
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| Posted: 29 September 2014 08:45 AM |
# 1
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Developer
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I tend to use Loopee for things like that:
{!-- Capture artists --}
{exp:stash:set_list name="list_artists" parse="yes"}
{exp:channel:entries
channel="music-artist"
orderby="title"
sort="asc"
dynamic="no"
disable="categories|category_fields|member_data|pagination"}
{stash:artist_name}{title}{/stash:artist_name}
{/exp:channel:entries}
{/exp:stash:set_list}
{!-- Output artists in A-Z order --}
{exp:loopee foreach="A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z" parse="inward"}
{exp:stash:get_list name="list_artists" match="#^{loopee_value}#" against="artist_name" orderby="artist_name" sort="asc"}
<h1>{loopee_value}</h1>
<p>{artist_name}</p>
{/exp:stash:get_list}
{/exp:loopee}
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JUK
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| Posted: 29 September 2014 08:50 AM |
# 2
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Hi Mark,
thanks for the pointer to Loopee. I’ll have a look.
I would be interested if it is possible to re-use a Stash variable in the same loop?
I found another way to retrieve the lists without Loopee:
{exp:stash:set_list name="alphabet"}
{stash:letter}A{/stash:letter}
{stash:letter}B{/stash:letter}
...
{stash:letter}Z{/stash:letter}
{/exp:stash:set_list}
{exp:stash:get_list name="alphabet"}
<h4>Artists starting with "{letter}":</h4>
{exp:stash:get_list:nested name="artists_{letter}" parse="inward"}
<p>{artist_name}</p>
{/exp:stash:get_list:nested}
{/exp:stash:get_list}
(This still needs some logic in case a list is empty.)
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Mark Croxton
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| Posted: 29 September 2014 08:57 AM |
# 3
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Developer
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Yes it is. You could also do this:
{exp:stash:set_list name="list_artists" parse="yes" parse_depth="2"}
{exp:channel:entries
channel="music-artist"
orderby="title"
sort="asc"
dynamic="no"
disable="categories|category_fields|member_data|pagination"}
{stash:letter}{exp:trunchtml chars='1'}{title}{/exp:trunchtml}{/stash:letter}
{stash:artist_name}{title}{/stash:artist_name}
{/exp:channel:entries}
{/exp:stash:set_list}
{exp:stash:get_list name="list_artists" unique="letter" orderby="letter" sort="asc"}
<h4>Artists starting with "{letter}":</h4>
{exp:stash:get_list:nested name="list_artists" match="#^{letter}#" against="artist_name" orderby="artist_name" sort="asc" prefix="nested"}
<p>{nested:artist_name}</p>
{/exp:stash:get_list:nested}
{/exp:stash:get_list}
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JUK
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| Posted: 29 September 2014 09:02 AM |
# 4
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Great, thank you for that.
My thinking mistake was that I thought I could re-use a Stash variable inside the same loop. Looks like that is not possible, that’s why you did it in two.
Thanks!
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