也许我已经盯着代码太久了，需要一双新的眼睛，但这让我很难过。我有一个失败的测试告诉我：
undefined local variable or method `object'
1) User pages edit with invalid information
Failure/Error: visit edit_user_path(user)
ActionView::Template::Error:
undefined local variable or method `object' for #<#<Class:0x007fdfb561ae80>:0x007fdfb58ab500>
# ./app/views/shared/_error_messages.html.erb:1:in `_app_views_shared__error_messages_html_erb__4119139248776046323_70299400131820'
# ./app/views/users/edit.html.erb:7:in `block in _app_views_users_edit_html_erb___2909598206032311320_70299400097640'
# ./app/views/users/edit.html.erb:6:in `_app_views_users_edit_html_erb___2909598206032311320_70299400097640'
# ./spec/requests/user_pages_spec.rb:116:in `block (3 levels) in <top (required)>'
** 更新：我解决了这个问题并发布了我的字段，以便有相同问题的人可以观察到解决方法。盯着某件事看太久可以说很多话。如果您感到沮丧，散步或其他什么，您可能会注意到错误很明显，只需在休息后重新审视一下就可以解决，就像我的情况一样。检查重复并调用对象：@user 为您的字段部分，同时为您的渲染调用 f:f。这将清除它:)
用户控制器：
class UsersController < ApplicationController
before_action :signed_in_user, only: [:index, :edit, :update, :destroy]
before_action :correct_user, only: [:edit, :update]
before_action :admin_user, only: :destroy
def new
@user = User.new
end
def create
@user = User.new(user_params)
if @user.save
sign_in @user
flash[:success] = "Welcome to the Tweeter App!"
redirect_to @user
else
render 'new'
end
end
def index
@users = User.paginate(page: params[:page])
end
def show
@user = User.find(params[:id])
@microposts = @user.microposts.paginate(page: params[:page])
end
def edit
end
def update
if @user.update_attributes(user_params)
flash[:success] = "Profile updated"
redirect_to @user
else
render 'edit'
end
end
def destroy
User.find(params[:id]).destroy
flash[:success] = "User deleted."
redirect_to users_url
end
private
def user_params
params.require(:user).permit(:name, :email, :password,
:password_confirmation)
end
# Before filters
def correct_user
@user = User.find(params[:id])
redirect_to(root_url) unless current_user?(@user)
end
def admin_user
redirect_to(root_url) unless current_user.admin?
end
end
用户页面规范：
require 'spec_helper'
describe "User pages" do
subject { page }
describe "index" do
before do
sign_in FactoryGirl.create(:user)
FactoryGirl.create(:user, name: "Bob", email: "bob@example.com")
FactoryGirl.create(:user, name: "Ben", email: "ben@example.com")
visit users_path
end
it { should have_title('All users') }
it { should have_content('All users') }
it "should list each user" do
User.all.each do |user|
expect(page).to have_selector('li', text: user.name)
end
end
describe "pagination" do
before(:all) { 30.times { FactoryGirl.create(:user) } }
after(:all) { User.delete_all }
it { should have_selector('div.pagination') }
it "should list each user" do
User.paginate(page: 1).each do |user|
expect(page).to have_selector('li', text: user.name)
end
end
end
describe "delete links" do
it { should_not have_link('delete') }
describe "as an admin user" do
let(:admin) { FactoryGirl.create(:admin) }
before do
sign_in admin
visit users_path
end
it { should have_link('delete', href: user_path(User.first)) }
it "should be able to delete another user" do
expect do
click_link('delete', match: :first)
end.to change(User, :count).by(-1)
end
it { should_not have_link('delete', href: user_path(admin)) }
end
end
end
describe "profile page" do
let(:user) { FactoryGirl.create(:user) }
let!(:m1) { FactoryGirl.create(:micropost, user: user, content: "Foo") }
let!(:m2) { FactoryGirl.create(:micropost, user: user, content: "Bar") }
before { visit user_path(user) }
it { should have_content(user.name) }
it { should have_title(user.name) }
describe "microposts" do
it { should have_content(m1.content) }
it { should have_content(m2.content) }
it { should have_content(user.microposts.count) }
end
end
describe "signup" do
before { visit signup_path }
let(:submit) { "Create my account" }
describe "with invalid information" do
it "should not create a user" do
expect { click_button submit }.not_to change(User, :count)
end
end
describe "with valid information" do
before do
fill_in "Name", with: "Example User"
fill_in "Email", with: "user@example.com"
fill_in "Password", with: "foobar"
fill_in "Confirm Password", with: "foobar"
end
it "should create a user" do
expect { click_button submit }.to change(User, :count).by(1)
end
describe "after saving the user" do
before { click_button submit }
let(:user) { User.find_by(email: 'user@example.com') }
it { should have_link('Sign out') }
it { should have_title(user.name) }
it { should have_selector('div.alert.alert-success', text: 'Welcome') }
end
end
end
describe "edit" do
let(:user) { FactoryGirl.create(:user) }
before do
sign_in user
visit edit_user_path(user)
end
describe "page" do
it { should have_content("Update your profile") }
it { should have_title("Edit user") }
it { should have_link('change', href: 'http://gravatar.com/emails') }
end
describe "with invalid information" do
before { click_button "Save changes" }
it { should have_content('error') }
end
describe "with valid information" do
let(:new_name) { "New Name" }
let(:new_email) { "new@example.com" }
before do
fill_in "Name", with: new_name
fill_in "Email", with: new_email
fill_in "Password", with: user.password
fill_in "Confirm Password", with: user.password
click_button "Save changes"
end
it { should have_title(new_name) }
it { should have_selector('div.alert.alert-success') }
it { should have_link('Sign out', href: signout_path) }
specify { expect(user.reload.name).to eq new_name }
specify { expect(user.reload.email).to eq new_email }
end
end
end
这是我的索引视图：
<% provide(:title, 'All users') %>
<h1>All users</h1>
<%= will_paginate %>
<ul class="users">
<%= render @users %>
</ul>
<%= will_paginate %>
这是我的编辑视图：
<% provide(:title, "Edit user") %>
<h1>Update your profile</h1>
<div class="row">
<div class="span6 offset3">
<%= form_for(@user) do |f| %>
<%= render 'users/fields', f: f %>
<%= f.submit "Save changes", class: "btn btn-large btn-primary" %>
<% end %>
<%= gravatar_for @user %>
<a href="http://gravatar.com/emails">change</a>
</div>
</div>
这是我的新观点：
<% provide(:title, 'Sign up') %>
<h1>Sign up</h1>
<div class="row">
<div class="span6 offset3">
<%= form_for(@user) do |f| %>
<%= render 'users/fields', f: f %>
<%= f.submit "Create my account", class: "btn btn-large btn-primary" %>
<% end %>
</div>
</div>
这是我的部分字段：
<%= render 'shared/error_messages', object: @user %>
<%= f.label :name %>
<%= f.text_field :name %>
<%= f.label :email %>
<%= f.text_field :email %>
<%= f.label :password %>
<%= f.password_field :password %>
<%= f.label :password_confirmation, "Confirm Password" %>
<%= f.password_field :password_confirmation %>
这是我的错误消息部分：
<% if object.errors.any? %>
<div id="error_explanation">
<div class="alert alert-error">
The form contains <%= pluralize(object.errors.count, "error") %>.
</div>
<ul>
<% object.errors.full_messages.each do |msg| %>
<li>* <%= msg %></li>
<% end %>
</ul>
</div>
<% end %>