Django Haystack + ElasticSearch分析器

Question

所以基本上我想在Haystack的Elasticsearch后端中添加一个分析器，到目前为止我还没有运气。

我试图查询类似3/09.0TBOBR.C1 ，但出现很多错误。 有人告诉我分析器是解决我问题的方法，所以我尝试使用keyword分析器

我试过这样的：

class ConfigurableElasticBackend(ElasticsearchSearchBackend):

    DEFAULT_ANALYZER = "keyword"

我也在设置文件中尝试过这样的操作：

ELASTICSEARCH_DEFAULT_ANALYZER = "keyword"

更改后我做了REBUILD INDEX

我的错误消息是：

Failed to query Elasticsearch using '(3/09.0TBOBR.C1)':
Non-OK response returned (400):
    u'SearchPhaseExecutionException[Failed to execute phase [query], all shards failed;
shardFailures {[oh93DYn1QTyVWmAnDMyKdQ][haystack][4]:
    SearchParseException[[haystack][4]: from[-1],size[-1]:
    Parse Failure [Failed to parse source [{
        "sort": [{
            "score": {"order": "asc", "ignore_unmapped": true, "missing": "_last"}
        }],
        "query": {"filtered": {"filter": {"fquery": {"query": {"query_string": {"query": "django_ct:(caselaw.process)"}}, "_cache": true}}, "query": {"query_string": {"query": "(3/09.0TBOBR.C1)", "default_operator": "AND", "default_field": "text", "auto_generate_phrase_queries": true, "analyze_wildcard": true}}}
        }, "from": 0, "size": 20}]]];

nested:
QueryParsingException[[haystack]
    Failed to parse query [(3/09.0TBOBR.C1)]];
    nested:
    ParseException[Cannot parse \'(3/09.0TBOBR.C1)\':
        Lexical error at line 1, column 17.
        Encountered: <EOF> after : "/09.0TBOBR.C1)"];
    nested:
    TokenMgrError[Lexical error at line 1, column 17.
        Encountered: <EOF> after : "/09.0TBOBR.C1)"]; }{[oh93DYn1QTyVWmAnDMyKdQ][haystack][0]:
        SearchParseException[[haystack][0]: from[-1],size[-1]:
        Parse Failure [Failed to parse source [{"sort": [{"score": {"order": "asc", "ignore_unmapped": true, "missing": "_last"}}], "query": {"filtered": {"filter": {"fquery": {"query": {"query_string": {"query": "django_ct:(caselaw.process)"}}, "_cache": true}}, "query": {"query_string": {"query": "(3/09.0TBOBR.C1)", "default_operator": "AND", "default_field": "text", "auto_generate_phrase_queries": true, "analyze_wildcard": true}}}}, "from": 0, "size": 20}]]];
    nested:
    QueryParsingException[[haystack] Failed to parse query [(3/09.0TBOBR.C1)]];
    nested:
    ParseException[Cannot parse \'(3/09.0TBOBR.C1)\':
        Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"];
    nested:
    TokenMgrError[Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; }{[oh93DYn1QTyVWmAnDMyKdQ][haystack][1]: SearchParseException[[haystack][1]: from[-1],size[-1]: Parse Failure [Failed to parse source [{"sort": [{"score": {"order": "asc", "ignore_unmapped": true, "missing": "_last"}}], "query": {"filtered": {"filter": {"fquery": {"query": {"query_string": {"query": "django_ct:(caselaw.process)"}}, "_cache": true}}, "query": {"query_string": {"query": "(3/09.0TBOBR.C1)", "default_operator": "AND", "default_field": "text", "auto_generate_phrase_queries": true, "analyze_wildcard": true}}}}, "from": 0, "size": 20}]]]; nested: QueryParsingException[[haystack] Failed to parse query [(3/09.0TBOBR.C1)]]; nested: ParseException[Cannot parse \'(3/09.0TBOBR.C1)\': Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; nested: TokenMgrError[Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; }{[oh93DYn1QTyVWmAnDMyKdQ][haystack][2]: SearchParseException[[haystack][2]: from[-1],size[-1]: Parse Failure [Failed to parse source [{"sort": [{"score": {"order": "asc", "ignore_unmapped": true, "missing": "_last"}}], "query": {"filtered": {"filter": {"fquery": {"query": {"query_string": {"query": "django_ct:(caselaw.process)"}}, "_cache": true}}, "query": {"query_string": {"query": "(3/09.0TBOBR.C1)", "default_operator": "AND", "default_field": "text", "auto_generate_phrase_queries": true, "analyze_wildcard": true}}}}, "from": 0, "size": 20}]]]; nested: QueryParsingException[[haystack] Failed to parse query [(3/09.0TBOBR.C1)]]; nested: ParseException[Cannot parse \'(3/09.0TBOBR.C1)\': Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; nested: TokenMgrError[Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; }{[oh93DYn1QTyVWmAnDMyKdQ][haystack][3]: SearchParseException[[haystack][3]: from[-1],size[-1]: Parse Failure [Failed to parse source [{"sort": [{"score": {"order": "asc", "ignore_unmapped": true, "missing": "_last"}}], "query": {"filtered": {"filter": {"fquery": {"query": {"query_string": {"query": "django_ct:(caselaw.process)"}}, "_cache": true}}, "query": {"query_string": {"query": "(3/09.0TBOBR.C1)", "default_operator": "AND", "default_field": "text", "auto_generate_phrase_queries": true, "analyze_wildcard": true}}}}, "from": 0, "size": 20}]]]; nested: QueryParsingException[[haystack] Failed to parse query [(3/09.0TBOBR.C1)]]; nested: ParseException[Cannot parse \'(3/09.0TBOBR.C1)\': Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; nested: TokenMgrError[Lexical error at line 1, column 17.  Encountered: <EOF> after : "/09.0TBOBR.C1)"]; }]'

我究竟做错了什么？ 谢谢

Answer 1

干草堆在查询方面的问题是，它在搜索索引配置中使用document=True标记的全部捕获字段。 关键字分析器很可能不会分析此字段。 但是，最好通过查看elasticsearch的输出（列出分析器）来进行检查：

http://localhost:9200/<index-name>/?pretty=true

在堆栈跟踪中，您可以看到：

“ default_field”：“文字”

如果您仍然想支持带有“正常”输入的自由文本用户搜索，则可以考虑使用两种不同的搜索视图。 对于3/09.0TBOBR.C1类的输入的特殊搜索，您可能想要使用Haystack的SearchQuerySet的.filter()或.narrow()方法，您可以在其中指定要搜索的字段（这就是您使用keyword分析器）。 对于常规文本字段，您可能不想使用关键字（==否）分析。