如何通过带有验证的文本字段创建模型？
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我遵循了到目前为止的教程“通过文本字段创建模型”（Railscast＃57）。但是，我注意到新对象的选择字段和输入字段均未得到验证。
我在受影响的模型上使用
accepts_nested_attributes_for
validates
class Internship < ActiveRecord::Base
belongs_to :study
belongs_to :company
attr_accessor :new_company_name, :new_company_website
before_save :create_company_from_data
accepts_nested_attributes_for :company, :study
validates :from, :presence => true
validates :till, :presence => true
validates_associated :company, :study
def create_company_from_data
create_company(:name => new_company_name, :website => new_company_website, :kind => false) unless new_company_name.blank?
end
end
没有找到相关结果
已邀请:
1 个回复
泉秘胁
class Internship < ActiveRecord::Base attr_accessor :new_company_name, :new_company_website belongs_to :user belongs_to :study belongs_to :company, :class_name => \"Facility\", :foreign_key => \'facility_id\' has_one :student, :through => :study accepts_nested_attributes_for :company, :study validates :from, :presence => true validates :till, :presence => true validates_presence_of :study validates_presence_of :company, :unless => :new_company_given? validates_presence_of :new_company_name, :new_company_website, :unless => :company_given? before_save :create_company_from_data, :if => :new_company_given? private # Returns a boolean value indicating whether a company is available. # @return [Boolean] True if a company is available; otherwise false. def company_given? return self.facility_id.present? end # Returns a boolean value indicating whether a new_company is available. # @return [Boolean] True if a new_company is available; otherwise false. def new_company_given? return (self.new_company_name.present? or self.new_company_website.present?) end # Creates a new company object taking into account the given parameters. def create_company_from_data create_company(:name => new_company_name, :website => new_company_website, :kind => false) end end<%= error_messages_for @internship %> <div class=\"formbox\"> <div class=\"formseparator\">When?</div> <%= render :partial => \"shared/internship_form_fields\", :locals => { :internship_fields => internship_fields } %> <div class=\"formseparator\">Where?</div> <p> <span class=\"formlabel\"><%= internship_fields.label :facility_id, \"Company\" %></span> <span class=\"formvalue\"><%= internship_fields.select :facility_id, Facility.companies.sorted.collect { |c| [c.name, c.id] }, { :include_blank => \"Please select a company.\" }, { :class => \"single\" } %></span> </p> <p> <span class=\"formlabel\"><%= internship_fields.label :new_company_name, \"or create a new\", :class => \"optional\" %></span> <span class=\"formvalue\"><%= internship_fields.text_field :new_company_name, :class => \"input\" %></span> </p> <p> <span class=\"formlabel\"><%= internship_fields.label :new_company_website, \"with a website\", :class => \"optional\" %></span> <span class=\"formvalue\"><%= internship_fields.url_field :new_company_website, :class => \"input\" %></span> </p> <!-- End of company_fields --> <div class=\"formseparator\">Your study?</div> <p> <span class=\"formlabel\"><%= internship_fields.label :study_id, \"Study\" %></span> <% mystudies = Array.new %> <% studies = Study.sorted.collect %> <% studies.each do |study| %> <% if (study.student == current_user) %> <% mystudies.push(study) %> <% end %> <% end %> <span class=\"formvalue\"> <%= internship_fields.select :study_id, mystudies.collect { |s| [s.study_text, s.id] }, { :include_blank => \"Please select one of your studies.\" }, { :class => \"single\" } %></span> </p> <!-- End of study_fields --> </div> <div class=\"form-buttons\"><%= internship_fields.submit \"Submit\" %></div>