Solr - Get a string field without case sensitive

Question

Im using the solr engine to an e-commerce website I have store the search tags as a sting in a single field as below, I need to get convert that field to case insensitive.I tried to apply the lowercase filter factory and it goes not work for the field

<field name="tags" type="string" multiValued="true" indexed="true" stored="true"/>

<fieldType name="string" class="solr.StrField" sortMissingLast="true" docValues="true"/>
  <analyzer>
      <tokenizer class="solr.StandardTokenizerFactory"/>
      <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>

Sample of the field

"tags":["Property",
          "House",
          "Land",
          "Home",
          "House For Sale",
          "Property For Sale",
          "Land For Sale",
          "Prime property for sale",
          "Prime property for sale in Colombo 03"],

Answer 1

You have defined your field as StrField. String fields can't have analysis chains attached. You have to change it to a TextField:

<fieldType name="string" class="solr.TextField" sortMissingLast="true" docValues="true"/>
  <analyzer>
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
</fieldType>

However, I'd recommend using a different name than string for the field, since the string field type is expected to work in a particular way (such as when used for id fields, etc.). Instead, use something describing what it does, such as string_caseinsensitive.