rails where
Try to convert to Rails/Ruby syntax like this: myarray_with_percetage_signs = ["name1","name2"].map |val| "%#val}%" } Product.where("name ILIKE ANY ... ,Module ActiveRecord::QueryMethods. activerecord/lib/active_record/relation/query_methods.rb ... CLASS ActiveRecord::QueryMethods::WhereChain. Methods. ,如果你习惯直接使用SQL 来查找数据库记录，那么你通常会发现Rails 为执行相同操作提供了更好的方式。在大多数情况下，Active Record 使你无需使用SQL。 ,But if you're not necessarily looking for a performant solution (i.e. you just want an ActiveRecord::Relation) then you can use the resulting array to do this. ,You need to join the accounts table and merge appropriate Account scope: User.joins(:account).merge(Account.where(:active => true)). ,Use a range object. .where(age: 5..50). Or you could write .where('age BETWEEN 5 AND 20'). ,If you're used to using raw SQL to find database records, then you will generally find that there are better ways to carry out the same operations in Rails. Active ... ,如果習慣寫純SQL 來查詢資料庫，則會發現在Rails 裡有更好的方式可以執行同樣的操作。Active Record 適用於大多數場景，需要寫SQL 的場景會變得非常少。 ,ActiveRecord 使用了Arel 技術來實作查詢功能，你可以自由組合where、limit、select、order 等條件。 Arel 是relational algebra” library。但根據2.0 實作者tenderlove ... ,Rails Guides. There is an excellent guide on the use of this method located here: http://guides.rubyonrails.org/active_record_querying.html#conditions.
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 rails where 相關參考資料
Rails where LIKE and array - Stack Overflow
Try to convert to Rails/Ruby syntax like this: myarray_with_percetage_signs = ["name1","name2"].map |val| "%#val}%" } Product.where("name ILIKE ANY ... https://stackoverflow.com ActiveRecord::QueryMethods - Ruby on Rails API
Module ActiveRecord::QueryMethods. activerecord/lib/active_record/relation/query_methods.rb ... CLASS ActiveRecord::QueryMethods::WhereChain. Methods. https://api.rubyonrails.org Active Record 查询接口— Ruby on Rails Guides
如果你习惯直接使用SQL 来查找数据库记录，那么你通常会发现Rails 为执行相同操作提供了更好的方式。在大多数情况下，Active Record 使你无需使用SQL。 https://ruby-china.github.io Rails where clause with a logic - Stack Overflow
But if you're not necessarily looking for a performant solution (i.e. you just want an ActiveRecord::Relation) then you can use the resulting array to do this. https://stackoverflow.com Rails where() clause on model association? - Stack Overflow
You need to join the accounts table and merge appropriate Account scope: User.joins(:account).merge(Account.where(:active => true)). https://stackoverflow.com Ruby on Rails Where clause less than greater than - Stack Overflow
Use a range object. .where(age: 5..50). Or you could write .where('age BETWEEN 5 AND 20'). https://stackoverflow.com Active Record Query Interface — Ruby on Rails Guides
If you're used to using raw SQL to find database records, then you will generally find that there are better ways to carry out the same operations in Rails. Active ... https://guides.rubyonrails.org Active Record 查詢— Ruby on Rails 指南
如果習慣寫純SQL 來查詢資料庫，則會發現在Rails 裡有更好的方式可以執行同樣的操作。Active Record 適用於大多數場景，需要寫SQL 的場景會變得非常少。 https://rails.ruby.tw Ruby on Rails 實戰聖經| ActiveRecord Query Interface - 資料表操作
ActiveRecord 使用了Arel 技術來實作查詢功能，你可以自由組合where、limit、select、order 等條件。 Arel 是relational algebra” library。但根據2.0 實作者tenderlove ... https://ihower.tw where (ActiveRecord::QueryMethods) - APIdock
Rails Guides. There is an excellent guide on the use of this method located here: http://guides.rubyonrails.org/active_record_querying.html#conditions. https://apidock.com |