Ajax”;链接_;当点击非常快时发送多个请求控制器请求(Rails4)
Ajax "link_to" sending multiple requests controller requests when clicked really fast(Rails 4)
在解释我的问题之前,我将提供上下文的相关代码。我有一个团队模型,它与记分牌模型相关联。手头的问题与团队有关。
团队视图索引
<div class="team-list">
<%= render @scoreboard.teams.reject(&:new_record?) %>
</div>
@记分牌的部分。团队
<div class="row team-div" id="team_<%=team.id%>">
<div class="col-xs-3 team-div-1"> <%= team.name %> </div>
<%= link_to (edit_scoreboard_team_path(@scoreboard, team)), remote: true do %>
<div class="col-xs-6 team-data">
<div class="row">
<div class="col-xs-4 team-div-2"><%= team.win %> </div>
<div class="col-xs-4 team-div-2"><%= team.loss %> </div>
<div class="col-xs-4 team-div-2"><%= team.tie %></div>
</div>
</div>
<% end %>
<div class="col-xs-1 team-div-2">
<%= team.win + team.loss + team.tie %>
</div>
<div class="col-xs-1 team-div-2">
<% total_games = team.win.to_i + team.loss.to_i + team.tie.to_i %>
<% if total_games == 0 %>
<%= "N/A" %>
<% else %>
<%= (team.win.to_i/(total_games).to_f*100).round(2) %><%="%"%>
<% end %>
</div>
<div class="col-xs-1 team-setting">
<i class="fa fa-trash-o fa-lg" aria-hidden="true"></i>
</div>
</div>
我遇到问题的链接是用于编辑方法的。
团队#编辑控制器方法
def edit
@scoreboard = Scoreboard.find(params[:scoreboard_id])
@team = @scoreboard.teams.find(params[:id])
respond_to do |format|
format.html {redirect_to scoreboard_url(@team.scoreboard_id)}
format.js
end
end
edit.js.erb文件
$("#team_<%=@team.id%>").hide();
$("#team_<%=@team.id%>").before("<%= j render 'teamedit'%>");
现在,来解释一下问题。我正处于发展环境中。在一个完美的世界里,我想点击link_to进行编辑,让特定的团队div立即消失(只是这样我就不能再点击它了),并为该团队呈现编辑表单。然而,在缓慢加载过程中(经常发生),我可以点击链接两到三次,它会调用多个控制器请求来编辑方法。这样做的问题是,Jquery的执行次数与我单击的次数一样多,最终我会为同一个元素生成2或3个表单。
例如,当我快速点击Id为50:的团队的link_to时,这些是日志文件
Started GET "/scoreboards/1/teams/50/edit" for 99.239.140.167 at 2016-04-30 08:07:52 +0000
Processing by TeamsController#edit as JS
Parameters: {"scoreboard_id"=>"1", "id"=>"50"}
User Load (0.6ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]]
Scoreboard Load (0.3ms) SELECT "scoreboards".* FROM "scoreboards" WHERE "scoreboards"."id" = $1 ORDER BY "score oards"."created_at" DESC LIMIT 1 [["id", 1]]
Team Load (0.3ms) SELECT "teams".* FROM "teams" WHERE "teams"."scoreboard_id" = $1 AND "teams"."id" = $2 LIMIT 1 [["scoreboard_id", 1], ["id", 50]]
Rendered teams/_teamedit.html.erb (3.1ms)
Rendered teams/edit.js.erb (7.1ms)
Completed 200 OK in 35ms (Views: 27.6ms | ActiveRecord: 1.2ms)
Started GET "/scoreboards/1/teams/50/edit" for 99.239.140.167 at 2016-04-30 08:07:52 +0000
Processing by TeamsController#edit as JS
Parameters: {"scoreboard_id"=>"1", "id"=>"50"}
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]]
Scoreboard Load (0.4ms) SELECT "scoreboards".* FROM "scoreboards" WHERE "scoreboards"."id" = $1 ORDER BY "scoreboards"."created_at" DESC LIMIT 1 [["id", 1]]
Team Load (0.3ms) SELECT "teams".* FROM "teams" WHERE "teams"."scoreboard_id" = $1 AND "teams"."id" = $2 LIMIT 1 [["scoreboard_id", 1], ["id", 50]]
Rendered teams/_teamedit.html.erb (2.1ms)
Rendered teams/edit.js.erb (5.6ms)
Completed 200 OK in 30ms (Views: 24.2ms | ActiveRecord: 1.0ms)
每个请求都呈现edit.js.erb,所以我最终得到了两个表单我如何才能使无论在"link_to"消失之前点击多少次,都只生成该资源的一个编辑表单
您可以通过使用jQuery
在第一次单击时禁用链接来解决此问题。
将类添加到链接
<%= link_to (edit_scoreboard_team_path(@scoreboard, team)), remote: true, class: "team-edit-link" do %>
...
<% end %>
点击时禁用链接
$('.team-edit-link').click(function(e) {
if($(this).hasClass('disabled')){
e.preventDefault();
}
else{
$(this).addClass('disabled');
}
});
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