enum PgORM::FullTextSearch::RankFunction

Overview

Ranking function type for relevance scoring.

PostgreSQL provides two ranking functions:

Cover density ranking often produces better results for phrase searches and when term proximity matters.

Example

# Standard ranking
Article.search_ranked("crystal", :content, rank_function: RankFunction::Rank)

# Cover density ranking (better for phrases)
Article.search_ranked("crystal programming", :content, rank_function: RankFunction::RankCD)

Defined in:

pg-orm/full_text_search.cr

Enum Members

Rank = 0
RankCD = 1

Instance Method Summary

Instance Method Detail

def rank? #

Returns true if this enum value equals Rank


[View source]
def rank_cd? #

Returns true if this enum value equals RankCD


[View source]
def to_s : String #
Description copied from struct Enum

Returns a String representation of this enum member. In the case of regular enums, this is just the name of the member. In the case of flag enums, it's the names joined by vertical bars, or "None", if the value is zero.

If an enum's value doesn't match a member's value, the raw value is returned as a string.

Color::Red.to_s                     # => "Red"
IOMode::None.to_s                   # => "None"
(IOMode::Read | IOMode::Write).to_s # => "Read | Write"

Color.new(10).to_s # => "10"

[View source]