instance method `column_alias_for`

Ruby on Rails 6.0.6

Since v3.0.20 Last seen in v6.1.7.10 Private

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10

Compare with:

column_alias_for(field)

Converts the given field to the value that the database adapter returns as a usable column name:

column_alias_for("users.id")                 # => "users_id"
column_alias_for("sum(id)")                  # => "sum_id"
column_alias_for("count(distinct users.id)") # => "count_distinct_users_id"
column_alias_for("count(*)")                 # => "count_all"

Parameters

field req

Source

# File activerecord/lib/active_record/relation/calculations.rb, line 376
      def column_alias_for(field)
        column_alias = +field
        column_alias.gsub!(/\*/, "all")
        column_alias.gsub!(/\W+/, " ")
        column_alias.strip!
        column_alias.gsub!(/ +/, "_")

        connection.table_alias_for(column_alias)
      end

Defined in activerecord/lib/active_record/relation/calculations.rb line 376 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Calculations

Signature

Parameters