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I would like to have a maximum number of items, say 10, per filter in layered navigation with a More... link that would then load all of the items for that filter. This would be really useful for the brands filter as there are a lot of them.

Any info/tutorials would be greatly appreciated!

  • I can suggest you this extension you can get everything you need for Layered navigation. – dh47 Jan 14 '15 at 7:26
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The layered nav options are displayed using the template app/design/frontend/{package}/{theme}/template/catalog/layer/filter.phtml.
If you want you can add your logic in there.
But I don't recommend this approach. Doing it like this 10 of your brands (or other filter) will always get more visibility than the rest of them. I'm no SEO specialist but I think that having hidden links will affect your page rank (Can someone confirm or bust this?).

I suggest having a max-height on each filter type with an overflow scroll.

  • From a performance perspective I highly recommend using the more approach. Layered navigation should not be crawled to begin with: infinite combinations resulting in a heavy penalty for consuming a lot of the crawlers time and the results are subsets of content displayed elsewhere. – Melvyn Jan 14 '15 at 8:50
  • @Melvyn. Thanks for clearing the SEO thing. But I still think the 'more' approach is less user friendly. But this is just my opinion. – Marius Jan 14 '15 at 8:53
  • Depends how well you implement it. For logged in customers you can opt to allow them to configure a set of defaults. You can show the most popular brands first, or brands you want to promote. You can also do a delayed fetch using Ajax, to cut down on the initial load time and fetch the rest through one request. More is less applies to showing everything as well: too many choices can be cluttering. – Melvyn Jan 14 '15 at 9:15
  • @Melvyn My SEO is setup with rel="canonical" for category pages. Hopefully this stops crawlers crawling the filters. I have seen lots of ajax layered navigation extensions, maybe one of them has this functionality already. The popular brands first is a good idea. Looks like I should look up some ajax magento tutorials too. – user2527377 Jan 15 '15 at 4:39
  • It does eventually. But since the bot has to first request the filtered page to parse it's canonical it will take a while. But don't take my word for it, check your webserver logs and see what pages are requested by crawlers. – Melvyn Jan 15 '15 at 8:18

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