通过带有设计错误的CRUD界面管理用户

Question

我已经建立了一个Crud接口与我的代码下面的设计，我遇到的问题是，当我试图创建一个用户得到以下错误。我也不会编辑。请帮助。

"2个错误禁止此用户被保存:电子邮件不能是空白的密码不能为空。"当然，我一直在输入所有的信息，包括电子邮件和密码。我遵循来自设计的文档，并阅读了这个网站的一些设计主题，没有报告这样的问题。控制器:类UsersController

  # respond_to do |format|
  #   format.html index.html.erb
  #   format.json { render :json => @users }
  end

# GET /users/1
# GET /users/1.json
def show
  @user = User.find(params[:id])
  # respond_to do |format|
  #   format.html show.html.erb
  #   format.json { render :json => @user }
  end
# GET /users/new
# GET /users/new.json
def new
  @user = User.new
  # respond_to do |format|
  #   format.html new.html.erb
  #   format.json { render :json => @user }
  end
# GET /users/1/edit
def edit
  @user = User.find(params[:id])
end
# POST /users
# POST /users.json
def create
  @user = User.new(params[:user_params])
  respond_to do |format|
    if @user.save
      format.html { redirect_to @user, :notice => 'User was successfully created.' }
      format.json { render :json => @user, :status => :created, :location => @user }
    else
      format.html { render :action => "new" }
      format.json { render :json => @user.errors, :status => :unprocessable_entity }
    end
  end
end
# PUT /users/1
# PUT /users/1.json
def update
  if params[:user][:password].blank?
    params[:user].delete(:password)
    params[:user].delete(:password_confirmation)
  end
  @user = User.find(params[:id])
  respond_to do |format|
    if @user.update_attributes(params[:user_params])
      format.html { redirect_to @user, :notice => 'User was successfully updated.' }
      format.json { head :ok }
    else
      format.html { render :action => "edit" }
      format.json { render :json => @user.errors, :status => :unprocessable_entity }
    end
  end
end
# DELETE /users/1
# DELETE /users/1.json
def destroy
  @user = User.find(params[:id])
  @user.destroy
  respond_to do |format|
    format.html { redirect_to users_url }
    format.json { head :ok }
  end
end

private

def user_params
  params.require(:user).permit(:username, :name, :lastname, :email, :password, :password_confirmation, :role_id)
end
def authorized_user
  if current_user.role.name == "admin"
  else
  redirect_to :root, notice: "Not authorized" if @current_user.role.name == 'user' or nil?
  end
end

结束

下面是我的表单:

<%= form_for(@user) do |f| %>
<% if @user.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@user.errors.count, "error") %> prohibited this user           from being saved:</h2>
      <ul>
        <% @user.errors.full_messages.each do |msg| %>
            <li><%= msg %></li>
        <% end %>
      </ul>
    </div>
<% end %>
<div class="field">
  <%= f.label :username %><br />
  <%= f.text_field :username, autofocus: true %>
</div>
<div class="field">
  <%= f.label :name %><br />
  <%= f.text_field :name, autofocus: true %>
</div>
<div class="field">
  <%= f.label :lastname %><br />
  <%= f.text_field :lastname, autofocus: true %>
</div>
<div class="field">
  <%= f.label :email %><br />
  <%= f.email_field :email, autofocus: true %>
</div>
<div class="field">
  <%= f.label :password %>
  <% if @minimum_password_length %>
      <em>(<%= @minimum_password_length %> characters minimum)</em>
  <% end %><br />
  <%= f.password_field :password, autocomplete: "off" %>
</div>
<div class="field">
  <%= f.label :password_confirmation %><br />
  <%= f.password_field :password_confirmation, autocomplete: "off" %>
</div>
<div class="field">
  <%= f.label :role_id %><br />
  <%= f.collection_select :role_id, Role.all, :id, :name_role_select  %>
</div>
<div class="actions">
  <%= f.submit "Sign up", class: 'button' %>
</div>

Answer 1

您没有正确使用您的user_params。

而不是在你的创建操作:

User.new(params[:user_params])

你需要这个，它调用你在控制器中定义的user_params方法:

User.new(user_params)

你原来的方法是寻找从你的请求传入的参数名为'user_params'(不存在)。

同样，对于您的update操作，您需要:

if @user.update_attributes(user_params)
  #etc...