我正在使用ransack gem
在rails应用程序中进行搜索。我需要在User
表中搜索email_ids
的数组。如何通过ransack gem搜索数组?
参考在洗劫this问题,我遵循的步骤,并已将此添加到初始化文件夹ransack.rb
Ransack.configure do |config|
{
contained_within_array: :contained_within,
contained_within_or_equals_array: :contained_within_or_equals,
contains_array: :contains,
contains_or_equals_array: :contains_or_equals,
overlap_array: :overlap
}.each do |rp, ap|
config.add_predicate rp, arel_predicate: ap, wants_array: true
end
end
在轨控制台,如果我这样做:
a = User.search(email_contains_array: ['[email protected]'])
它产生sql像这样:
"SELECT \"users\".* FROM \"users\" WHERE \"users\".\"deleted_at\" IS NULL AND (\"users\".\"email\" >> '---\n- [email protected]\n')"
并给出e RROR这样的:
User Load (1.8ms) SELECT "users".* FROM "users" WHERE "users"."deleted_at" IS NULL AND ("users"."email" >> '---
- [email protected]
')
ActiveRecord::StatementInvalid: PG::UndefinedFunction: ERROR: operator does not exist: character varying >> unknown
LINE 1: ...RE "users"."deleted_at" IS NULL AND ("users"."email" >> '---
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
: SELECT "users".* FROM "users" WHERE "users"."deleted_at" IS NULL AND ("users"."email" >> '---
- [email protected]
')
预期的那样,这个查询:
SELECT "users".* FROM "users" WHERE ("users"."roles" @> '{"3","4"}')
什么是错的我在干嘛?