Question

我的lib目录中有一个名为query.rb的脚本。我想要它，所以我可以从Rails控制台运行它。我想知道这是否可行。该脚本在应用程序中运行良好，因此我知道它的结构良好且功能齐全。

Answer 1

对于Rails 3+，请使用load "#{Rails.root}/lib/your_lib_file.rb" 加载工作类似于require，但允许您在编辑文件时重新加载文件（与require不同，您无法再次运行）。见https://stackoverflow.com/a/6361502/513739

Answer 2

require "#{RAILS_ROOT}/lib/query"

Answer 3

>> $:.unshift 'lib'
>> require 'query'

Answer 4

对于Rails 4 +：

    DROP FUNCTION IF EXISTS leaflet_upsert_usercomments(int[], text[]);

    -- Returns a set of op,cartodb_id values where op means:
    --  deleted: -1
    --  updated: 0
    --  inserted: 1

    CREATE OR REPLACE FUNCTION leaflet_upsert_usercomments(
    cartodb_ids integer[],
    geojsons text[])
    RETURNS TABLE(op int, cartodb_id int)

    LANGUAGE plpgsql SECURITY DEFINER
    RETURNS NULL ON NULL INPUT
    AS $$
    DECLARE
    sql text;
    BEGIN

    sql := 'WITH n(cartodb_id,the_geom) AS (VALUES ';

    -- Iterate over the values
    FOR i in 1 .. array_upper(geojsons, 1)
    LOOP
    IF i > 1 THEN sql := sql || ','; END IF;
    sql :=sql || '('||cartodb_ids[i]||','
            || 'ST_SetSRID(ST_GeomFromGeoJSON(NULLIF('''|| geojsons[i] ||''','''')),4326))';
    END LOOP;

    sql := sql || '), do_update AS ('
      || 'UPDATE leaflet_data p '
      || 'SET the_geom=n.the_geom FROM n WHERE p.cartodb_id = n.cartodb_id '
      || 'AND n.the_geom IS NOT NULL '
      || 'RETURNING p.cartodb_id ), do_delete AS ('
      || 'DELETE FROM leaflet_data p WHERE p.cartodb_id IN ('
      || 'SELECT n.cartodb_id FROM n WHERE cartodb_id >= 0 AND '
      || ' n.the_geom IS NULL ) RETURNING p.cartodb_id ), do_insert AS ('
      || 'INSERT INTO leaflet_data (the_geom)'
      || 'SELECT n.the_geom FROM n WHERE n.cartodb_id < 0 AND '
      || ' n.the_geom IS NOT NULL RETURNING cartodb_id ) '
      || 'SELECT 0,cartodb_id FROM do_update UNION ALL '
      || 'SELECT 1,cartodb_id FROM do_insert UNION ALL '
      || 'SELECT -1,cartodb_id FROM do_delete';

    RAISE DEBUG '%', sql;

    RETURN QUERY EXECUTE sql;

    END;
    $$;

    -- Grant access to the public user
    GRANT EXECUTE ON FUNCTION leaflet_upsert_usercomments(integer[],text[]) TO publicuser;

如何从控制台中获取Rails目录中的库？

4 个答案: