"/books/" + book_id + "/edit" "/books/#{book_id}/edit"( string interpolation 插入插值 ) 在实践中,我们发现上面这两种形式,都是外行的风格(比如,之前做java/javascript 的同学,来写ruby , 就是这个风格) 下面是 Rails风格(把可读性发挥到极致)的写法: edit_book_url({:id=>book_id}) 这个写法...
"/books/" + book_id + "/edit" "/books/#{book_id}/edit" ( string interpolation 插入插值 )在实践中,我们发现上面这两种形式,都是外行的风格(比如,之前做java/javascript 的同学,来写ruby , 就是这个风格)下面是 Rails风格(把可读性发挥到极致)的写法:...
If a translation expects an interpolation variable, but this has not been passed to #translate, an I18n::MissingInterpolationArgument exception is raised. 4.3 Pluralization In English there are only one singular and one plural form for a given string, e.g. "1 message" and "2 messages". ...
One of the oldest helpers in Rails is also the most underrated. `dom_id` shines for building apps with Hotwire, allowing you to easily target parts of the page without a bunch of nasty string interpolation. Self-destructing StimulusJS controllers ...
以下ような基本的なログ書き方は、比較的動作が重いStringオブジェクトのインスタンス化と、実行に時間のかかる変数の式展開 (interpolation) が行われるため、大量に呼び出された場合にはパフォーマンスに影響が出る。そして、これはログの出力レベルがdebugを含んでいなかった場合でも評価されてし...
string string interpolation strip_attribtutes style stylesheets sub-resource subclasses subdirectories subdomain subfolder submit submit_tag submit_to_remote subversion sugar sum sweeper sweepers sybase rails3 active-record symbol synchronization syntax syntaxsugar table table-inheritance table_alias table_name...
When building paths, instead of using String interpolation Rails.root.join("app/models/#{path}") you should still use join to do the concatenation: Rails.root.join("app/models", path). Although beware that in your example you are joining a path that starts with /. This is actually dismi...
Another important thing some novice developers tend to forget about is the fact that you can pass variables to your translations in Rails. Suppose, for example, you wish to display how many new messages has the user received. Of course, you may simply employ string interpolation like this: ...
(Listing 3.32 uses an instance variable, seen briefly in Section 2.2.2 and covered further in Section 4.4.5, combined with string interpolation, which is covered further in Section 4.2.1.) Listing 3.32: The Static Pages controller test with a base title. green test/controllers/static_pages_...
To turn off string interpolation,use a single-quoted string instead of a double-quoted one: irb(main):028:0> "Hello, #{name.upcase}" => "Hello, READER" irb(main):029:0> 'Hello, #{name.upcase}' => "Hello, \#{name.upcase}" ...