Rails collection_select 如何正确引用hash？

Question

正如您在下面看到的，我创建了一个散列，但我不知道要在我的 collection_select 标记中引用该散列。所以我已经成功地做到了这一点，但是我的散列是配置文件对象的集合，当我尝试使用键值对的集合来完成它时，它似乎不起作用，我将首先向您展示正确工作的代码，然后我将向您展示不起作用的代码。

这给了我零错误：

  <% listoflos = [] %>
  <% @profiles.each do |profile|  %>
    <% listoflos.push(profile) if profile.title == "loan officer" %>
  <% end %>
  <%= f.collection_select :loanofficer_id, listoflos, :user_id, :firstname, {prompt: true} %>

这给了我错误：

  <%= f.label "Progress" %>&nbsp
  <% listofprogress = [["1 Not contacted", "1"],["2 Interested", "2"],["3 App Taken", "3"],["4 Priced", "4"],["5 Disclosure Signed", "5"],["6 No Appraisal Needed", "6"],["7 Appraisal Ordered", "7"],["8 Appraisal Recieved", "8"],["9 In Underwriting", "9"],["10 Closing Scheduled", "10"],["11 Closed", "11"],["12 Dead", "12"],["Unknown", "unknown"]] %>

    <%= f.collection_select :progress, listofprogress, :id, :value, {prompt: true} %>

我收到一个错误：

NoMethodError in Records#edit Showing c:/Sites/TeamCRM/app/views/records/_eform.html.erb where line #52 raised:

undefined method `value' for ["1 Not contacted", "1"]:Array

你知道我做错了什么吗？

Answer 1

来自 Rails 文档

collection_select(object, method, collection, value_method, text_method, options = {}, html_options = {})

The :value_method and :text_method parameters are methods to be called on each member of collection.

您的代码试图在数组上调用 value，但该数组没有响应该方法。

尝试使用 options_for_select

<%= f.label "Progress" %>
<% listofprogress = [["1 Not contacted", "1"],["2 Interested", "2"],["3 App Taken", "3"],["4 Priced", "4"],["5 Disclosure Signed", "5"],["6 No Appraisal Needed", "6"],["7 Appraisal Ordered", "7"],["8 Appraisal Recieved", "8"],["9 In Underwriting", "9"],["10 Closing Scheduled", "10"],["11 Closed", "11"],["12 Dead", "12"],["Unknown", "unknown"]] %>

<%= f.select :progress, options_for_select(listofprogress, @record.progress_id.to_s), {prompt: true} %>

Rails collection_select 如何正确引用hash？

Rails collection_select how to reference hash correctly?

forms

arrays

hash

ruby-on-rails

collection-select