javascript - ruby array to javascript - Rails

Question

I am trying to pass a ruby array to a js view (js.erb format) but it doesn't work at all.

var array = "<%= @publishers_list %>";

The variable array is just set as a string with all the array's values in it.

Is there a way to keep the array format ?

Edit

I just realized it was because of my array format.

[{:label => "name1", :value => value1}, {:label => "name2", :value => value2}]

I tried to pass a simple array like:

[1,2,3]

and it worked fine.

The question is now: how can I pass this kind of array ? I really need to keep these hashes in it because I want to put it as a source of a jQuery autocomplete.

Answer 1

var array = <%= escape_javascript @publisher_list.to_json %>

Answer 2

尝试这个：

var array = <%= j @publishers_list.to_json %>

j是简写escape_javascript（感谢评论者 lfx_cool）。

请参阅文档：http ://api.rubyonrails.org/classes/ERB/Util.html

要稍微清理一下你的视图代码，你也可以在你的控制器中@publishers_list变成。json这样，在您看来，您可以使用：

var array = <%= j @publishers_list %>

Answer 3

只需在 Controller 的特定操作中定义一个数组，例如：

def rails_action
  @publishers_list = []
  # write some code to insert value inside this array
  # like: 
  # @publishers.each do |publisher|
  # @publishers_list << publisher.name
  # end 
end

与此操作关联的 js 文件，例如：rails_action.js.erb

现在使用您的代码

var array = [];
array = "<%= @publishers_list %>";

谢谢。