未初始化的常量…错误

| 我收到以下错误：
uninitialized constant Profile::STRING_LEN_MAX_DB
。 这是我所拥有的： application_helper.rb 
def field ( form, field_name, len = TEXT_FIELD_LEN, max_len = STRING_LEN_MAX_DB )
    x = content_tag \"label\", \"#{field_name.humanize}:\", :for => field_name
    y = form.text_field field_name, :size => len, :maxlength => max_len { \"#{x}  #{y} <br />\"}
end
编辑视图 
<% form_for :profileinfo do |fe| %>
<fieldset>
<info><%= @titlu %></info>
<%= error_messages_for \'profileinfo\' %>
<div class=\"fields\">
    <%= field fe, \"first_name\" %>
    <%= field fe, \"last_name\" %>

    <label for=\"gender\">Sex:</label>
    <%= radio_button :profileinfo, :gender, \"Male\" %> Male
    <%= radio_button :profileinfo, :gender, \"Female\" %> Female
    <br />
    <label for=\"birth_date\">Date of birth:</label>
    <%= date_select :profileinfo, :birth_date, :start_year => Profile::YEAR_FT, :end_year => Time.now.year, :include_blank => true, :order => [:month, :day, :year] %>
    <br />

    <%= field fe, \"ocupation\" %>
    <%= field fe, \"city\" %>
    <%= field fe, \"country\" %>
    <%= field fe, \"postal_code\", Profile::PSTCOD_LEN %>
    <%= submit_tag \"Save\", :class => \"submit\" %>
</div>
</fieldset>
<% end %>
config \\ environments.rb 
# Load the rails application
require File.expand_path(\'../application\', __FILE__)

# Be sure to restart your server when you modify this file
# Initialize the rails application
IRC07::Application.initialize! do |config|
STRING_LEN_MAX_DB=255
TEXT_FIELD_LEN=15
end
在ѭ4中进行更改后，我已重新启动服务器，但仍然收到相同的错误。     
2020-02-24 3 条评论
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没有找到相关结果

    已邀请:

    良阑纠苫

            移动这些行： 
    STRING_LEN_MAX_DB=255
TEXT_FIELD_LEN=15
    退出配置循环。 因此，您的enviroment.rb看起来像： 
    # Load the rails application
require File.expand_path(\'../application\', __FILE__)

# Be sure to restart your server when you modify this file
# Initialize the rails application
IRC07::Application.initialize! do |config|
end
STRING_LEN_MAX_DB=255
TEXT_FIELD_LEN=15
    如果这样做不起作用，请尝试：     ＃加载rails应用程序     需要File.expand_path（\'../ application \'，FILE） 
    # Be sure to restart your server when you modify this file
# Initialize the rails application
IRC07::Application.initialize! do
  STRING_LEN_MAX_DB=255
  TEXT_FIELD_LEN=15
end
        
    2020-02-24 0 0
    分享

    寇剩

            我在以下位置更改了代码：app \\ views \\ editprofile \\ edit.html.erb 
    <%= form_for :profileinfo do |fe| %>
<fieldset>
<info><%= @titlu %></info>
<%= error_messages_for \'profileinfo\' %>
<div class=\"fields\">
<%= text_field_for fe, \"first_name\" %>
<%= text_field_for fe, \"last_name\" %>
<label for=\"gender\">Gender:</label>
<%= radio_button :profileinfo, :gender, \"Male\" %> Male
<%= radio_button :profileinfo, :gender, \"Female\" %> Female
<br />
<label for=\"birth_date\">Birthdate:</label>
<%= date_select :profileinfo, :birth_date, :start_year => Profile::YEAR_FT, :end_year => Time.now.year, :include_blank => true, :order => [:month, :day, :year] %>
<%= text_field_for fe, \"ocupation\" %>
<%= text_field_for fe, \"city\" %>
<%= text_field_for fe, \"country\" %>
<%= text_field_for fe, \"postal_code\", Profile::PSTCOD_LEN %>
<%= submit_tag \"Update\", :class => \"submit\" %>
</div>
</fieldset>
<% end %>
    也是application_helper中的函数text_field_for 
       def text_field_for(form, field, size=TEXT_FIELD_LEN, maxlength=STRING_LEN_MAX_DB)
    label = content_tag(\"label\", \"#{field.humanize}:\", :for => field)
    form_field = form.text_field field, :size => size, :maxlength => maxlength
    content_tag(\"div\", \"#{label} #{form_field}\", :class => \"fields\")
   end
    性别和生日都可以，但是对于文本字段，我没有任何文本字段，相反，我得到了带有所有参数的html标签...像这样： 
        <label for=\"first_name\">First name:</label> <input id=\"profileinfo_first_name\" maxlength=\"255\" name=\"profileinfo[first_name]\" size=\"15\" type=\"text\" value=\"\" />
    <label for=\"last_name\">Last name:</label> <input id=\"profileinfo_last_name\" maxlength=\"255\" name=\"profileinfo[last_name]\" size=\"15\" type=\"text\" value=\"\" />
        
    2020-02-24 0 0
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