Haystack Django Elasticsearch spelling - django

Question

I have two problems setting up haystack/django/elasticsearch
I never get results from index fields, e.g. indexes.CharField(model_attr='title') doesn't get me results. Only if I put {{ object.title }} in my txt template I get results for matching titles
If my title is 'foo' I never get results for 'fo', while I do have the INCLUDE_SPELLING setting set to True in my backend setting.
The documentation doesn't state anything special about these cases, my setup is per the haystack documentation, what am I missing?
My index:
class FooIndex(indexes.SearchIndex, indexes.Indexable):
text = indexes.CharField(document=True, use_template=True)
title = indexes.CharField(model_attr='title') # never gets me results unless I add it to the template
def get_model(self):
return Foo
My settings:
HAYSTACK_CONNECTIONS = {
'default': {
'ENGINE': 'haystack.backends.elasticsearch_backend.ElasticsearchSearchEngine',
'URL': 'http://127.0.0.1:9200/',
'INDEX_NAME': 'haystack',
'INCLUDE_SPELLING': True,
},
}

Answer 1

1) If you have use_template=True only index what you put in the template file so put all the fields you want indexed in there.
2) Did you refresh the index after adding INCLUDE_SPELLING ?

Answer 2

Make sure you enabled spellcheck component.
The first thing to do is create a special field on your SearchIndex class that mirrors the text field, but uses FacetCharField. This disables the post-processing that Solr does, which can mess up your suggestions. Something like the following is suggested:
class MySearchIndex(indexes.SearchIndex, indexes.Indexable):
text = indexes.CharField(document=True, use_template=True)
# ... normal fields then...
suggestions = indexes.FacetCharField()
def prepare(self, obj):
prepared_data = super(MySearchIndex, self).prepare(obj)
prepared_data['suggestions'] = prepared_data['text']
return prepared_data
Once this is done, spelling_suggestions method should return the appropriate values.