No success with wildcard search

[Seb A.]

Hi !

I'm stuck on a simple case and I can't really know why it doesn't work as expected.

I'm using a 5.2 rails app with TS 4.3.2 and Sphinx 3.1.

For my blog, here : https://milesandlove.com/photos, I'm indexing about 6000 images with only one field which is basically a concatenate of some fields :

ThinkingSphinx::Index.define :image, :with => :real_time do

indexes searchable

has rank, :type => :integer, :as => :rank_sort

end.

Got a searchable method in my image.rb model as follow :

def searchable

[title, tag_list.map(&:downcase).join(" "), of, country, region, city].flatten.join(" ")

end

Thus , this searchable return this kind of content :

"Incroyables formations rocheuses paysages montagnes d'Allemagne Allemagne La Saxe Bastei" 

"Coucher de soleil, vallée de la mort manuelle deserts coucher de soleil du Chili Chili Nord du Chili Valle de la Luna" 

"Regard Granada Nicaragua manuelle du Nicaragua Nicaragua Granada et alentours Granada"

Now, my goal is to be able to search within this content with multiple words. 

If I try : "Seb Montagnes", it return results.

But if I try 'Seb Montagne", it return nothing, even with enable star set to true.

I can't understand how to make this work. Any idea? 

(as a note, sorry for the French words guys...)

[Walter Lee Davis]

I wonder if there’s some configuration needed to set the stemming language? That’s just a guess. 

Walter

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[Pat Allan]

Hi Seb,

No need to apologise for the French! :)

You’ll likely need either min_infix_len or min_prefix_len set in config/thinking_sphinx.yml to ensure parts of words are indexed alongside full words:

https://freelancing-gods.com/thinking-sphinx/v4/advanced_config.html#infix-and-prefix-indexing

Walter’s suggestion about stemming is a good one, but I think stemming - for any language - is going to focus on a standard dictionary, rather than proper names? I’m not sure though, perhaps it takes a more general approach.

https://freelancing-gods.com/thinking-sphinx/v4/advanced_config.html#word-stemming--morphology

After changing any of these settings, you’ll need to rebuild your index to have the changes applied to Sphinx.

Give that a shot - in particular, the infix/prefix setting - and let us know if the problem persists!

Cheers,

— 

Pat

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