Highlighting and snippets...

[St4rDust]

HI,

I'm a noob to BL, whenever I try to turn on HIghling in BL on the field I want highlighted the field is returned empty:

 config.add_index_field 'content', :label => 'content', :highlight => 'true'


this is the "Search requesthandler"

<requestHandler name="search" class="solr.SearchHandler" default="true">
    <!-- default values for query parameters can be specified, these
         will be overridden by parameters in the request
      -->
     <lst name="defaults">
       <str name="defType">dismax</str>
       <str name="echoParams">explicit</str>
    <str name="tie">0.01</str>
       <int name="rows">10</int>

    <str name="qf">
        content^0.5 anchor^1.0 title^1.2</str>
   
    <str name="pf">   

    content^0.5 anchor^1.5 title^1.2 site^1.5 </str>

      
       <str name="mm">2&lt;-1 5&lt;-2 6&lt;90%</str>
   
    <str name="ps">100</str>  
       <str name="hl">true</str>
       <str name="hl.fl">content</str>
       <str name="hl.encoder">html</str>
       <str name="hl.simple.pre">&lt;b&gt;</str>
       <str name="hl.simple.post">&lt;/b&gt;</str>
       <str name="f.title.hl.fragsize">2</str>
       <str name="f.title.hl.alternateField">title</str>
       <str name="f.name.hl.fragsize">0</str>
       <str name="f.name.hl.alternateField">name</str>
       <str name="f.content.hl.snippets">3</str>
       <str name="f.content.hl.fragsize">200</str>
       <str name="f.content.hl.alternateField">content</str>
       <str name="f.content.hl.maxAlternateFieldLength">750</str>

   
    </lst>
   </requestHandler>

thnx for any help you can give me

[Adam Wead]

It looks like you need pass the field names to the highlight parameter in solr. You can do this via the CatalogController. Take a look at how I did mine:

https://github.com/awead/catalog/blob/r13/app/controllers/catalog_controller.rb#L10

Basically, you need to tell solr each field you want to highlight, which is the hl.fl parameter. The other two are the tags to wrap the content in.

For example, if I have a solr field called “heading_ssm”, then I pass that field in the hl.fl parameter, then set :highlight => true in the index or show config. NB: there are two solr config sections in the CatalogController, one for the search query which is used for index views, and the second for the document query which is used for show views. I’ve kept my hl.fl values the same for both, but you don’t have to in case you wanted to highlight some fields in the search results but not in the individual results, or vice versa.

hope that helps,

…adam

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[St4rDust]

Do you mean like this in here?

configure_blacklight do |config|
    ## Default parameters to send to solr for all search-like requests. See also SolrHelper#solr_search_params
    config.default_solr_params = { 
      :qt => 'search',
	:qf => 'id content url title anchor author',
      :rows => 10 
 ("hl.fl").to_sym => "content",
      ("hl.simple.pre").to_sym => '<span class="label label-info">',
      ("hl.simple.post").to_sym => "</span>",
      :hl => true
    }

    config.default_document_solr_params = {
      ("hl.fl").to_sym => "content",
      ("hl.simple.pre").to_sym => '<span class="label label-info">',
      ("hl.simple.post").to_sym => "</span>",
      :hl => true
    }

this make BL puke

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[Adam Wead]

First thought is, for you have fields like "content url title anchor author” defined in your solr schema.xml file? Can you gist the error messages you are seeing?

…adam

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[St4rDust]

the fileds are in the schema.xml, and display... the "content" field contains whatever the website had and is rather long, it is returned with the search results and I can see it, but when I add : :highlight => 'true' in catalog controller it doesn't render the field anymore, just blank. When I add what you sayd I get:

SyntaxError in SearchHistoryController#index

/home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:13: syntax error, unexpected (, expecting '}' ("hl.fl").to_sym => "content", ^ /home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:13: syntax error, unexpected =>, expecting keyword_end ("hl.fl").to_sym => "content", ^ /home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:13: syntax error, unexpected ',', expecting keyword_end /home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:14: syntax error, unexpected =>, expecting keyword_end ("hl.simple.pre").to_sym => '<span class="label label-info">', ^ /home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:14: syntax error, unexpected ',', expecting keyword_end /home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:15: syntax error, unexpected =>, expecting keyword_end ("hl.simple.post").to_sym => "</span>", ^ /home/rrk/enlle/my_app/app/controllers/catalog_controller.rb:15: syntax error, unexpected ',', expecting keyword_end

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[Jessie Keck]

This is a general ruby syntax error (probably caused my the missing comma after rows).  Also, it may be syntactically OK, but things like ("hl.fl").to_sym => "content" can be written simply as :"hl.fl" => "content"

Try something like https://gist.github.com/jkeck/9334756

Also, I'm not exactly sure but I don't think the highlighting will work the way you think it will on the single document view, given the parameters you're trying to pass in as default_document_solr_params.  

- Jessie

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[St4rDust]

I tried your code, it seems to be working, it looks rather weird, but I guess thats the solrconfig side, i'll mess around with it tomorrow, thnx!

[St4rDust]

HI,

I got the highlighting to work, but no matter how I change the options in solarconfig.xml, the snippet stays the same size, whihc is aprox. 1 sentence which is a bit short...

[Erik Hatcher]

What is Solr logging as the request from Blacklight?   What does your solrconfig request handler definition look like now?   Probably just a http://wiki.apache.org/solr/HighlightingParameters#hl.fragsize setting not right or being overridden unintentionally or something?

Erik

On Mar 5, 2014, at 12:20 PM, St4rDust <black...@gmail.com> wrote:

HI,

I got the highlighting to work, but no matter how I change the options in solarconfig.xml, the snippet stays the same size, whihc is aprox. 1 sentence which is a bit short...

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[St4rDust]

Solr request Handler:

<requestHandler name="search" class="solr.SearchHandler" default="true">
    <!-- default values for query parameters can be specified, these
         will be overridden by parameters in the request
      -->
     <lst name="defaults">
       <str name="defType">dismax</str>
       <str name="echoParams">explicit</str>
    <str name="tie">0.01</str>
       <int name="rows">10</int>

    <str name="qf">
        content^0.5 anchor^1.0 title^1.2</str>
   
    <str name="pf">   

    content^0.5 anchor^1.5 title^1.2 site^1.5 </str>

      
       <str name="mm">2&lt;-1 5&lt;-2 6&lt;90%</str>
   
    <str name="ps">100</str>  
       <str name="hl">true</str>
       <str name="hl.fl">content</str>
       <str name="hl.encoder">html</str>
       <str name="hl.simple.pre">&lt;b&gt;</str>
       <str name="hl.simple.post">&lt;/b&gt;</str>
      

       <str name="f.content.hl.snippets">190</str>
       <str name="f.content.hl.fragsize">9000</str>
       <str name="f.content.hl.alternateField">title</str>
       <str name="f.content.hl.maxAlternateFieldLength">1750</str>

   
    </lst>
   </requestHandler>

Am Mittwoch, 5. März 2014 19:03:20 UTC+1 schrieb Ethan Hatcher:

What is Solr logging as the request from Blacklight?   What does your solrconfig request handler definition look like now?   Probably just a http://wiki.apache.org/solr/HighlightingParameters#hl.fragsize setting not right or being overridden unintentionally or something?

Erik

On Mar 5, 2014, at 12:20 PM, St4rDust <black...@gmail.com> wrote:

HI,

I got the highlighting to work, but no matter how I change the options in solarconfig.xml, the snippet stays the same size, whihc is aprox. 1 sentence which is a bit short...

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