我是Rails的新手，我正在尝试使用AJAX更新我的应用中的“里程碑”项目。里程碑属于项目。我已经能够成功实现创建和删除的AJAX请求，但我遇到了更新问题。
当我提交表单时，它说它由MilestonesController＃update作为JS处理，状态为Completed 200 OK，并且create.js.erb运行，但里程碑实际上并没有更新。
以下是相关文件，请告知我是否可以提供任何其他背景信息，并提前感谢您提供的任何帮助！
从终端，选中复选框以更新已完成为真：
Started PATCH "/projects/clustertruck-branding-design-and-development/milestones/24" for 127.0.0.1 at 2015-12-31 16:12:04 -0500
Processing by MilestonesController#update as JS
Parameters: {"utf8"=>"✓", "milestone"=>{"project_id"=>"7", "completed"=>"true", "completed_date"=>"2015-12-31"}, "commit"=>"✓", "project_id"=>"clustertruck-branding-design-and-development", "id"=>"24"}
User Load (0.1ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1 [["id", 1]]
Project Load (0.1ms) SELECT "projects".* FROM "projects" WHERE "projects"."slug" = 'clustertruck-branding-design-and-development' ORDER BY "projects"."id" ASC LIMIT 1
Milestone Load (0.1ms) SELECT "milestones".* FROM "milestones" WHERE "milestones"."project_id" = ? AND "milestones"."id" = ? LIMIT 1 [["project_id", 7], ["id", 24]]
ActsAsTaggableOn::Tag Load (0.1ms) SELECT "tags".* FROM "tags" INNER JOIN "taggings" ON "tags"."id" = "taggings"."tag_id" WHERE "taggings"."taggable_id" = ? AND "taggings"."taggable_type" = ? AND (taggings.context = 'tags' AND taggings.tagger_id IS NULL) [["taggable_id", 24], ["taggable_type", "Milestone"]]
Rendered milestones/_milestone.html.erb (7.2ms)
Rendered milestones/update.js.erb (11.3ms)
Completed 200 OK in 18ms (Views: 14.7ms | ActiveRecord: 0.3ms)
的routes.rb
get 'tags/:tag', to: 'milestones#index', as: :tag
root :to => "projects#index"
resources :memberships
resources :projects do
resources :milestones
end
update.js.erb
<% if @milestone.valid? %>
$('li#milestone-<%= @milestone.id %>').first().after("<%= j render @milestone %>");
$('li#milestone-<%= @milestone.id %>').first().remove();
$('li#month-marker-<%= @milestone.id %>').hide();
$('li#month-marker-<%= @milestone.id %>').first().show();
$(".modal").modal("hide");
$("body").removeClass("modal-open");
$(".modal-backdrop").remove();
<% else %>
alert("<%= @milestone.errors.full_messages.join(', ').html_safe %>");
<% end %>
milestones_controller.rb class MilestonesController＆lt; ApplicationController中
before_action :require_user, only: [:index, :show]
before_action :require_editor, only: [:new, :create, :edit, :update, :destroy]
before_filter :load_project
before_filter :load_milestone, only: [:show, :edit, :update, :destroy]
def index
@milestones = Milestone.all
end
def show
end
def edit
end
def update
end
def new
@milestone = Milestone.new
end
def create
@milestone = Milestone.new(milestone_params)
@milestone.save
end
def destroy
@milestone.destroy
end
private
def milestone_params
params.require(:milestone).permit(:name, :description, :completed, :date, :completed, :completed_date, :project_id, :tag_list)
end
def load_project
@project = Project.friendly.find(params[:project_id])
end
def load_milestone
@milestone = @project.milestones.find(params[:id])
end
end
_milestone.html.erb
<% if @monthmarker != milestone.date.strftime("%B") %>
<% @monthmarker = milestone.date.strftime("%B") %>
<li class="month-marker" id="month-marker-<%= milestone.id %>"><%= @monthmarker %></li>
<% end %>
<% completion_classes = ""
completion_classes << " complete" if milestone.milestone_complete?
completion_classes << " incomplete" if milestone.milestone_incomplete?
completion_classes << " overdue" if milestone.milestone_overdue?
%>
<li id="milestone-<%= milestone.id %>" class="card timeline-card<%= completion_classes %>">
<div class="assignment-bubble">
<% if milestone %>
<% else %>
<% end %>
</div>
<div class="card-header">
<% if current_user && current_user.editor? %>
<a href="#" class="card-header-edit-link" data-toggle="modal" data-target="#edit-milestone-modal-<%= milestone.id %>">Edit</a>
<% end %>
<% if milestone.date.present? && !milestone.completed %>
Due: <%= milestone.date.strftime("%A, %B %d, %Y") %>
<% end %>
<% if milestone.completed && milestone.completed_date.present? %>
Completed: <%= milestone.completed_date.strftime("%A, %B %d, %Y") %>
<% end %>
</div>
<div class="card-body">
<% if current_user && current_user.editor? %>
<% if milestone.completed %>
<%= form_for [milestone.project,milestone], :remote => true do |f| %>
<%= f.hidden_field(:project_id) %>
<%= f.hidden_field(:completed, value: false) %>
<%= f.submit "✓", :class => "status-checkbox #{completion_classes} mark-complete" %>
<% end %>
<% else %>
<%= form_for [milestone.project,milestone], :remote => true do |f| %>
<%= f.hidden_field(:project_id) %>
<%= f.hidden_field(:completed, value: true) %>
<%= f.hidden_field(:completed_date, value: Date.current) %>
<%= f.submit "✓", :class => "status-checkbox #{completion_classes} mark-complete" %>
<% end %>
<% end %>
<% else %>
<div class="status-checkbox view-only-status<%= completion_classes %>">✓</div>
<% end %>
<h3 class="name"><%= milestone.name %></h3>
<p class="description"><%= milestone.description %></p>
<% if milestone.tag_list.present? %>
<ul class="tags">
<li class="tag"><%= raw milestone.tag_list.map { |t| link_to t, tag_path(t) }.join('</li><li class="tag">') %></li>
</ul>
<% end %>
</div>
<div class="modal fade" id="edit-milestone-modal-<%= milestone.id %>" tabindex="-1" role="dialog" aria-labelledby="milestoneModalLabel">
<%= form_for [milestone.project,milestone], :remote => true do |f| %>
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="modal-close-btn" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="milestoneModalLabel">Edit Milestone</h4>
</div>
<div class="modal-body">
<% flash.each do |key, value| %>
<div class="alert alert-<%= key %>"><%= value %></div>
<% end %>
<div class="field">
<%= f.label :milestone %>
<%= f.text_field :name, :required => true %>
</div>
<div class="field">
<%= f.label :description %>
<%= f.text_area :description, :required => true %>
</div>
<div class="field">
<%= f.label :date %>
<%= f.date_field :date, "data-format" => "MM/dd/yyyy", :required => true %>
</div>
<div class="field">
<%= f.label :completed %>
<%= f.select :completed, options_for_select([['Incomplete' ,''], ['Complete', true]], milestone.completed), :required => true %>
</div>
<div class="field">
<%= f.label :completed_date %>
<%= f.date_field :completed_date, "data-format" => "MM/dd/yyyy" %>
</div>
<div class="field">
<%= f.label :tag_list, "Tags (separated by commas)" %>
<%= f.text_field :tag_list %>
</div>
</div>
<div class="modal-footer">
<% if current_user && current_user.editor? %>
<%= link_to [milestone.project,milestone], method: :delete, data: { confirm: 'Are you sure you want to delete this milestone?' }, :class => "btn btn-delete", :remote => true do %>Delete Milestone<% end %>
<% end %>
<%= f.submit "Save Milestone", :class => "btn btn-primary" %>
</div>
</div>
</div>
<% end %>
</div>
</li>
答案 0 :(得分：1)
将更新方法更改为以下内容：
def update
@milestone.update_attributes(milestone_params)
end
现在你的更新方法没有逻辑，所以它显示正常并加载你的里程碑/编辑器，但实际上什么都没有。
您还应该考虑将来扩展它：
respond_to do |format|
if @milestone.update_attributes(milestone_params)
format.js {} #this simply display your javascript
else
# Insert some kind of logic here where it displays errors
end
end