这似乎是一个常见的问题，我尝试了几个解决方案并且遇到了意想不到的问题。目标是创建一个管理员可以编辑权限和删除用户帐户的页面。路线：
devise_for :users, controllers: { registrations: 'users/registrations'}
get '/login', to: 'sessions#new'
match '/users', to: 'users#index', via: 'get'
match '/users/makeAdmin', to: 'users#makeAdmin', via: 'get', :as => :users_makeAdmin
match '/users/revokeAdmin', to: 'users#revokeAdmin', via: 'get'
match 'users/:id' => 'users#destroy', :via => :delete, :as => :admin_destroy_user
match 'users/:id' => 'users#show', via: 'get', as: :user
resources :users
users_controller.rb
class UsersController < ApplicationController
def index
end
def makeAdmin
@user = User.find(params[:id])
@user.update(admin: true)
redirect_to users_index_path
end
def revokeAdmin
@user = User.find(params[:id])
@user.update(admin: false)
redirect_to users_index_path
end
def show
@user = User.find(params[:id])
end
def destroy
@user = User.find(params[:id])
@user.destroy
if @user.destroy
redirect_to users_index_path, notice: "User deleted."
end
end
end
用户/ index.html.erb
<style>
.button_to {
display: inline;
}
.evenrow {
background-color: #eee;
}
</style>
<script type="text/javascript">
function alert() {
alert("The paragraph was clicked.");
}
</script>
<h1>All Users</h1>
<ul class="list-group" style="padding: 0em 10% 0em 10%;">
<li class="list-group-item" style="background-color: #428bca; border-color: #357ebd;; color: #fff;">
<div class="row">
<div class="col-md-3">
<b>User Email</b>
</div>
<div class="col-md-3">
<b>User Name</b>
</div>
<div class="col-md-1">
<b>Admin</b>
</div>
<div class="col-md-5">
<b>Controls</b>
</div>
</div>
</li>
<%@users = User.all%>
<% @users.each do |user| %>
<li class="list-group-item">
<div class="row">
<div class="col-md-3">
<%= user.email %>
</div>
<div class="col-md-3">
<%= user.name %>
</div>
<div class="col-md-1">
<%= user.admin %>
</div>
<div class="col-md-5">
<% if user.admin %><%= link_to 'Revoke Admin', users_revokeAdmin_path(id: user.id), class: "btn btn-primary btn-md" %><% else %><%= link_to 'Make Admin', users_makeAdmin_path(id: user.id), class: "btn btn-primary btn-md" %><% end %>
| <%= link_to "Destroy", admin_destroy_user_path(user), method: :delete, data: { confirm: "You sure?" }, class: "btn btn-primary btn-md" %>
</div>
</div>
</li>
<% end %>
</ul>
当我点击用户的销毁按钮时，我收到错误消息
Template is missing
Missing template users/show, application/show with {:locale=>[:en], :formats=>[:html], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :jbuilder]}. Searched in: * "/home/student/SLP/rca/app/views" * "/home/student/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/devise-4.2.0/app/views"
我还没有在任何其他问题中提到这一点，任何帮助都表示赞赏。 编辑：这是自有人询问后的堆栈。
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actionview (4.2.6) lib/action_view/rendering.rb:83:in `render_to_body'
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actionpack (4.2.6) lib/action_controller/metal/renderers.rb:37:in `render_to_body'
actionpack (4.2.6) lib/abstract_controller/rendering.rb:25:in `render'
actionpack (4.2.6) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (4.2.6) lib/action_controller/metal/instrumentation.rb:44:in `block (2 levels) in render'
activesupport (4.2.6) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
/home/student/.rbenv/versions/2.3.1/lib/ruby/2.3.0/benchmark.rb:308:in `realtime'
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actionpack (4.2.6) lib/action_controller/metal/instrumentation.rb:43:in `render'
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actionpack (4.2.6) lib/action_controller/metal/implicit_render.rb:5:in `send_action'
actionpack (4.2.6) lib/abstract_controller/base.rb:198:in `process_action'
actionpack (4.2.6) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.2.6) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
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actionpack (4.2.6) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (4.2.6) lib/active_support/notifications.rb:164:in `block in instrument'
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actionpack (4.2.6) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.2.6) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.2.6) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.2.6) lib/abstract_controller/base.rb:137:in `process'
actionview (4.2.6) lib/action_view/rendering.rb:30:in `process'
actionpack (4.2.6) lib/action_controller/metal.rb:196:in `dispatch'
actionpack (4.2.6) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.2.6) lib/action_controller/metal.rb:237:in `block in action'
actionpack (4.2.6) lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
actionpack (4.2.6) lib/action_dispatch/routing/route_set.rb:43:in `serve'
actionpack (4.2.6) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.6) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.6) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.6) lib/action_dispatch/routing/route_set.rb:817:in `call'
warden (1.2.6) lib/warden/manager.rb:35:in `block in call'
warden (1.2.6) lib/warden/manager.rb:34:in `catch'
warden (1.2.6) lib/warden/manager.rb:34:in `call'
rack (1.6.4) lib/rack/etag.rb:24:in `call'
rack (1.6.4) lib/rack/conditionalget.rb:25:in `call'
rack (1.6.4) lib/rack/head.rb:13:in `call'
actionpack (4.2.6) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.6) lib/action_dispatch/middleware/flash.rb:260:in `call'
rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.6) lib/action_dispatch/middleware/cookies.rb:560:in `call'
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rack (1.6.4) lib/rack/methodoverride.rb:22:in `call'
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rack (1.6.4) lib/rack/lock.rb:17:in `call'
actionpack (4.2.6) lib/action_dispatch/middleware/static.rb:120:in `call'
rack (1.6.4) lib/rack/sendfile.rb:113:in `call'
railties (4.2.6) lib/rails/engine.rb:518:in `call'
railties (4.2.6) lib/rails/application.rb:165:in `call'
rack (1.6.4) lib/rack/lock.rb:17:in `call'
rack (1.6.4) lib/rack/content_length.rb:15:in `call'
rack (1.6.4) lib/rack/handler/webrick.rb:88:in `service'
/home/student/.rbenv/versions/2.3.1/lib/ruby/2.3.0/webrick/httpserver.rb:140:in `service'
/home/student/.rbenv/versions/2.3.1/lib/ruby/2.3.0/webrick/httpserver.rb:96:in `run'
/home/student/.rbenv/versions/2.3.1/lib/ruby/2.3.0/webrick/server.rb:296:in `block in start_thread'
答案 0 :(得分：0)
您遇到无模板错误的原因是因为您已经在上面的行中销毁了用户，因此if @user.destroy为false。因此，redirect_to users_index_path永远不会发生，它正在寻找破坏模板。
将您的代码更改为：
def destroy
@user = User.find(params[:id])
if @user.destroy
redirect_to users_index_path, notice: "User deleted."
else
redirect_to users_index_path, flash: { error: "User could not be deleted." }
end
end