fields.py

class Field(PointIndex):

    fields = {
        'title': {
            'type': 'text',
            'term_vector': 'with_positions_offsets',
        },
        'description': {
            'type': 'text',
            'term_vector': 'with_positions_offsets',
        },
        'description_short': {
            'type': 'text',
            'index': False,
        },
        'color': {
            'type': 'float',
            'index': False,
        },
    }

    def search_query(self, qs):
        return {
            'bool': {
                'should': [
                    # Word-level matches, cross-field.
                    {'multi_match': {
                        'query': qs,
                        'fields': ['title', 'description'],
                        'type': 'cross_fields',
                        'operator': 'and',
                    }},
                    # Phrase prefix matches.
                    {'multi_match': {
                        'query': qs,
                        'fields': ['title', 'description'],
                        'type': 'phrase_prefix',
                    }},
                ]
            }
        }

    highlight = {
        'type': 'fvh',
        'fields': {
            'title': {
                # Always take full title, effectively.
                'fragment_size': 1000,
                'number_of_fragments': 1,
            },
            'description': {
                'fragment_size': 200,
                'number_of_fragments': 2,
            },
        }
    }