在Ruby on Rails应用程序中向下拉选择器添加巨大的列表

Question

我正在建立一个应用程序，用户可以选择它的行业类型，因为他们注册的应用程序。

在我的user.rb模型中，我有这样的代码

INDUSTRY_TYPES = [['Heavy'], ['Medium'], ['Light'], ['Dirty']]

(这四种行业类型仅用于测试目的)。

它在sign up视图中显示如下：

  <div class="field">
   <%= f.label :industry_type %>
   <%= f.select(:industry_type, options_for_select(User::INDUSTRY_TYPES)) %>
 </div>

现在，我想使用基本上所有可用行业的完整列表，而不是我一直使用的四个行业。

我在github https://gist.github.com/mbejda/19012b99a12e9d014389#file-industries-csv上找到了这个列表，我想用它来代替我一直使用的四种类型。

所以我的问题是，基本上有没有可能在不手动键入行业类型的情况下将它们添加到数组中？

Answer 1

只需将以下行复制并粘贴到您的User模型中：

INDUSTRY_TYPES = ['Industry','Accounting','Airlines/Aviation','Alternative Dispute Resolution','Alternative Medicine','Animation','Apparel/Fashion','Architecture/Planning','Arts/Crafts','Automotive','Aviation/Aerospace','Banking/Mortgage','Biotechnology/Greentech','Broadcast Media','Building Materials','Business Supplies/Equipment','Capital Markets/Hedge Fund/Private Equity','Chemicals','Civic/Social Organization','Civil Engineering','Commercial Real Estate','Computer Games','Computer Hardware','Computer Networking','Computer Software/Engineering','Computer/Network Security','Construction','Consumer Electronics','Consumer Goods','Consumer Services','Cosmetics','Dairy','Defense/Space','Design','E-Learning','Education Management','Electrical/Electronic Manufacturing','Entertainment/Movie Production','Environmental Services','Events Services','Executive Office','Facilities Services','Farming','Financial Services','Fine Art','Fishery','Food Production','Food/Beverages','Fundraising','Furniture','Gambling/Casinos','Glass/Ceramics/Concrete','Government Administration','Government Relations','Graphic Design/Web Design','Health/Fitness','Higher Education/Acadamia','Hospital/Health Care','Hospitality','Human Resources/HR','Import/Export','Individual/Family Services','Industrial Automation','Information Services','Information Technology/IT','Insurance','International Affairs','International Trade/Development','Internet','Investment Banking/Venture','Investment Management/Hedge Fund/Private Equity','Judiciary','Law Enforcement','Law Practice/Law Firms','Legal Services','Legislative Office','Leisure/Travel','Library','Logistics/Procurement','Luxury Goods/Jewelry','Machinery','Management Consulting','Maritime','Market Research','Marketing/Advertising/Sales','Mechanical or Industrial Engineering','Media Production','Medical Equipment','Medical Practice','Mental Health Care','Military Industry','Mining/Metals','Motion Pictures/Film','Museums/Institutions','Music','Nanotechnology','Newspapers/Journalism','Non-Profit/Volunteering','Oil/Energy/Solar/Greentech','Online Publishing','Other Industry','Outsourcing/Offshoring','Package/Freight Delivery','Packaging/Containers','Paper/Forest Products','Performing Arts','Pharmaceuticals','Philanthropy','Photography','Plastics','Political Organization','Primary/Secondary Education','Printing','Professional Training','Program Development','Public Relations/PR','Public Safety','Publishing Industry','Railroad Manufacture','Ranching','Real Estate/Mortgage','Recreational Facilities/Services','Religious Institutions','Renewables/Environment','Research Industry','Restaurants','Retail Industry','Security/Investigations','Semiconductors','Shipbuilding','Sporting Goods','Sports','Staffing/Recruiting','Supermarkets','Telecommunications','Textiles','Think Tanks','Tobacco','Translation/Localization','Transportation','Utilities','Venture Capital/VC','Veterinary','Warehousing','Wholesale','Wine/Spirits','Wireless','Writing/Editing']

另一种选择是将该列表复制到外部文件(CSV或YAML)中，并将其加载到INDUSTRY_TYPES常量中。

只需将以下代码保存到config/industry_types.yml即可

---
- Industry
- Accounting
- Airlines/Aviation
- Alternative Dispute Resolution
- Alternative Medicine
- Animation
- Apparel/Fashion
- Architecture/Planning
- Arts/Crafts
- Automotive
- Aviation/Aerospace
- Banking/Mortgage
- Biotechnology/Greentech
- Broadcast Media
- Building Materials
- Business Supplies/Equipment
- Capital Markets/Hedge Fund/Private Equity
- Chemicals
- Civic/Social Organization
- Civil Engineering
- Commercial Real Estate
- Computer Games
- Computer Hardware
- Computer Networking
- Computer Software/Engineering
- Computer/Network Security
- Construction
- Consumer Electronics
- Consumer Goods
- Consumer Services
- Cosmetics
- Dairy
- Defense/Space
- Design
- E-Learning
- Education Management
- Electrical/Electronic Manufacturing
- Entertainment/Movie Production
- Environmental Services
- Events Services
- Executive Office
- Facilities Services
- Farming
- Financial Services
- Fine Art
- Fishery
- Food Production
- Food/Beverages
- Fundraising
- Furniture
- Gambling/Casinos
- Glass/Ceramics/Concrete
- Government Administration
- Government Relations
- Graphic Design/Web Design
- Health/Fitness
- Higher Education/Acadamia
- Hospital/Health Care
- Hospitality
- Human Resources/HR
- Import/Export
- Individual/Family Services
- Industrial Automation
- Information Services
- Information Technology/IT
- Insurance
- International Affairs
- International Trade/Development
- Internet
- Investment Banking/Venture
- Investment Management/Hedge Fund/Private Equity
- Judiciary
- Law Enforcement
- Law Practice/Law Firms
- Legal Services
- Legislative Office
- Leisure/Travel
- Library
- Logistics/Procurement
- Luxury Goods/Jewelry
- Machinery
- Management Consulting
- Maritime
- Market Research
- Marketing/Advertising/Sales
- Mechanical or Industrial Engineering
- Media Production
- Medical Equipment
- Medical Practice
- Mental Health Care
- Military Industry
- Mining/Metals
- Motion Pictures/Film
- Museums/Institutions
- Music
- Nanotechnology
- Newspapers/Journalism
- Non-Profit/Volunteering
- Oil/Energy/Solar/Greentech
- Online Publishing
- Other Industry
- Outsourcing/Offshoring
- Package/Freight Delivery
- Packaging/Containers
- Paper/Forest Products
- Performing Arts
- Pharmaceuticals
- Philanthropy
- Photography
- Plastics
- Political Organization
- Primary/Secondary Education
- Printing
- Professional Training
- Program Development
- Public Relations/PR
- Public Safety
- Publishing Industry
- Railroad Manufacture
- Ranching
- Real Estate/Mortgage
- Recreational Facilities/Services
- Religious Institutions
- Renewables/Environment
- Research Industry
- Restaurants
- Retail Industry
- Security/Investigations
- Semiconductors
- Shipbuilding
- Sporting Goods
- Sports
- Staffing/Recruiting
- Supermarkets
- Telecommunications
- Textiles
- Think Tanks
- Tobacco
- Translation/Localization
- Transportation
- Utilities
- Venture Capital/VC
- Veterinary
- Warehousing
- Wholesale
- Wine/Spirits
- Wireless
- Writing/Editing

并将该文件加载到模型中，如下所示：

INDUSTRY_TYPES = YAML.load_file(Rails.root.join('config', 'industry_types.yml')).freeze