I get this error when installing the generator component
Import Error: about.json does not exist, or is invalid
2 Likes
Let me revert. Thanks for testing.
UPDATE: Apologies! Thatās fixed and tested in Production, please update it and refresh your browser.
Moral of the story: donāt release things late in evening when tired! (I had somehow forgotten to push the very file that was critical for it to work!). The readme wasnāt going to get anyone anywhere fast!
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OK Iād better summarise the current status as things are getting confusing:
There are now two distinct setups:
- Existing, standard, Plugin based one. Iām thinking of replacing it with 2 though (I will give notice).
-
Plugin
https://github.com/paviliondev/discourse-topic-previews*this link has been incorrect in the OP for some time, please make sure you are using the paviliondev repo.
- Theme Component for Generating Thumbnails No longer required as Discourse has kindly just added a plugin facility. Iāve released an update to the plugin to accommodate.https://github.com/paviliondev/tlp-thumbnail-generator-component (this is a new requirement because of the way Discourse now supports Thumbnailing).
OR:
- TC based, experimental, expect minor issues but added bonuses of Featured Images on mobile and responsiveness to sidebars ā¦ optional plugin sidecar that adds features
-
Theme Component
https://github.com/merefield/discourse-topic-list-previews-theme -
Add the sidecar plugin if you want more features:
- git clone https://github.com/merefield/discourse-topic-previews.git -b "theme_sidecar". At this point this is functionally very very similar to plugin.
Sorry for any confusion on different setups
9 Likes
The component is live now and it works really well, thanks again!
The only challenge we have now is that "topic list thumbnail resolution levelā affects the featured images as well. So we have either featured images that are a bit too small or thumbnails in the topic list that are too large. Would it be possible to have a ātopic list featured images resolution levelā?
Edit: And another thing: Apparently, the Topic list preview plugin sorted the featured images by tagging date which makes a lot sense imho. The theme component sorts by last post date which makes the featured images change quite rapidly. Would it be possible to sort by tagging date? Thanks so much!
3 Likes
Good suggestion, thatās implemented: FEATURE: offer independent Featured Images resolution level Ā· merefield/discourse-topic-list-previews-theme@0b90138 Ā· GitHub
Please update and let me know how you get on.
5 Likes
Works like a charm, thanks so much! 
Would it be also possible to sort the featured images by tagging date (see above)?
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The plugin has itās own API changes, unfortunately the TC does not, so not unless I can pull that from a simple existing HTTP request in one go.
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Would the publication date work? Since we do a magazine with discourse and your TC, it would be odd, if a user could change the headlines by writing a comment. 
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Or can you get that feed ā/tag/{tag}.json?ascending=false&order=createdā?
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And the plan is to continue moving forward primarily with the TC, correct?
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Yep that could work. And perhaps a setting for latest versus created
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Yes correct. For all the reasons outlined earlier.
I donāt envisage needing to drop support for the plugin imminently but the TC will have the focus for new features.
The recent changes in Discourse are slightly unprecedented so hopefully we can look forward to a bit more stability in the coming months.
2 Likes
hi,
2. TC based, experimental, expect minor issues but added bonuses of Featured Images on mobile and responsiveness to sidebars ā¦ optional plugin sidecar that adds features
-
Theme Component
https://github.com/merefield/discourse-topic-list-previews-theme - Add the sidecar plugin if you want more features:
- git clone https://github.com/merefield/discourse-topic-previews.git -b "theme_sidecar". At this point this is functionally very very similar to plugin.
I followed these steps.
the like button does not appear. How can I show the like button ?
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Iāve yet to implement that in this configuration. Itās coming
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I have updated to latest version of the plugin (4.3.1) and discourse (2.5.0.beta4) and noticed that almost all of my topic list previews are gone 
I am able to regenerate the preview image on a per-topic basis, however this is a) time-consuming, and b) nudges the topics to the top after I update them.
Is there a way to automatically regenerate the topic thumbnails?
I really love this plugin - itās done wonders for our forum and makes it look great. I also tried the [edit - it was a from a different author so not relevant to this discussion] TC but found it looks quite different and has less options - so this plugin still seems superior to me unless someone can correct me?
1 Like
Yep, a post rebake from the console will do it: Rebake all posts?
But before you do that make sure this is big:
Otherwise those posts wonāt have their remote images brought into the forum and the thumbnails wonāt then be created.
The Theme Component is work in progress and you need the āplugin sidecarā installed for the complete feature set. Actions is not yet supported but will be soon when I get a moment.
Oh, how so? There is a slight approximation made on tile size, but apart from missing actions it should be identical (aside from the tiles ships with slight drop shadows on the TC which I prefer personally).
2 Likes
This worked perfectly, my thumbnails are rebuilt ā thanks so much for the pointer!
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Hey, similar issue as Ian C ; since the upgrade to Discourse 2.5.0.beta4, with Topic List Previews 4.4.0, most of the thumbnails disappeared (on a side-node, why not all?)
Iāve tried to rebake all posts. It did not help.
Any solution, please?
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Max days old is way too low. As I pointed out it should be a high number. 30 means anything older than a month will not be thumbnailed.
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The option is not enabled. It should not be affected, right?