Question

我目前遇到了将一个模型连接到另一个模型的问题。基本上我希望用户（用户模型）能够通过表单选择特定学校（学校模型），并且用户将在该特定学校之下，直到他们更改它。我无法弄清楚如何做到这一点，任何帮助将不胜感激！谢谢！

用户模型

class User < ActiveRecord::Base
  attr_accessible :name, :email, :password, :password_confirmation, :biography, :avatar
  has_secure_password
  belongs_to :school, foreign_key: "school_id"
end

我没有为用户模型中的任何学校定义任何内容因为我不确定要放什么。

学校模式

class School < ActiveRecord::Base
  attr_accessible :name, :school_id

  has_many :users

  validates :school_id, presence: true

end

用户控制器

def create
  @user = User.new(params[:user])
  if @user.save
    redirect_to @user
  else
    redirect_to current_school
  end
end

def update
 @user = current_user
 if @user.update_attributes(params[:user])
  flash[:notice] = "Successfully updated profile."
  redirect_to home_path
 else
  redirect_to current_school
 end
end

学校管理员

def create
  school = School.find(params[:name])
   if school
   session[:school_id] = school.id
   redirect_to school_path(school)
  end
end

def show
  @school = School.find(params[:id])
  @user = User.new
end

有学校内用户的表格

<%= simple_form_for @user do |f| %>
<%= f.label :Name %></br>
<%= f.text_field :name, :class => 'modal_settingfield' %>
</br></br>
<%= f.label :Email %></br>
<%= f.text_field :email, :class => 'modal_settingfield' %>
</br></br>
<%= f.label :Password %> <span class='faded'>(Leave blank to not change)</span>
<%= f.password_field :password, :class => 'modal_settingfield'%>
</br></br>
<%= f.label :Password_Confirmation %> <span class='faded'>(Leave blank to not change)</span>
<%= f.password_field :password_confirmation, :class => 'modal_settingfield'%>
</br></br>
<%= f.label :School_id %> <span class='faded'>(Leave blank to not change)</span>
<%= f.association :school, collection: @schools, label_method: :name, value_method: :id, prompt: "Select a school", :label => false, :required => false %>
<%= f.label :Biography %> <span class='faded'>(Please limit Biography to <span class='TextCounter'></span>letters)</span></br>
<%= f.text_area :biography, :class => 'modal_settingfield'%>
</br></br>
<%= f.label :Photo %> <span class='faded'>(Add a Profile Picture)</span></br>
<%= f.file_field :avatar %>
<%= f.submit 'Update', :class => 'update_button' %>
<% end %>

当前学校

def current_school
  @current_school ||= School.find(session[:school_id]) if session[:school_id]
end
helper_method :current_school

会话控制器（这是登录代码）

def create
  user = User.find_by_email(params[:email])
  if user && user.authenticate(params[:password])
    if params[:remember_me]
      cookies.permanent[:auth_token] = user.auth_token
    else
      cookies[:auth_token] = user.auth_token
    end
    redirect_to home_path
  else
    flash.now.alert = "Invalid email or password"
    redirect_to current_school
  end
end

def destroy
  cookies.delete(:auth_token)
  redirect_to current_school
end

Answer 1

我建议simple_form gem这类事情，一般来说是更容易，更清晰，更简洁的形式。请参阅收集部分。

您的代码如下：

<%= simple_form_for @user do |f| %>
  <%= f.input :name %>
  <%= f.input :school_id, collection: @schools, label_method: :name, value_method: :id, prompt: "Select a school" %>
  <%= f.button :submit %>
<% end %>

这假设@schools变量由呈现此表单的控制器操作设置。我假设这些对象是School个对象，具有:name和:id方法。

此外，您的School模型可能不应该school_id作为attr_accessible，我认为您希望在User模型上使用此模型以及验证规则。如果您遵循常规命名，也不需要明确设置外键，即：

class User < ActiveRecord::Base
  attr_accessible :school_id, :name, :email, :password, :password_confirmation, :biography, :avatar
  has_secure_password
  belongs_to :school

  validates :school, presence: true
end

Rails：通过表单将一个模型连接到另一个模型

1 个答案: