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ruby-on-rails - 未定义的方法 `group_by_day' - rails 3.2

转载 作者:数据小太阳 更新时间:2023-10-29 07:46:29 33 4
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我想使用 chartkick 制作用户注册数量(每天)的折线图,这是一个简单的一行代码,但它给出了一个错误

`undefined method `group_by_day' for #<Class:0x00000004b4fbf0>`

在我看来我有

<%= line_chart User.group_by_day(:created_at).count %>

错误日志:

Rendered admin/dashboards/index.html.erb within layouts/application (145.2ms)
Completed 500 Internal Server Error in 1018ms

NoMethodError - undefined method `group_by_day' for #<Class:0x00000004b4fbf0>:
activerecord (3.2.14) lib/active_record/dynamic_matchers.rb:55:in `method_missing'
app/views/admin/dashboards/index.html.erb:38:in `_app_views_admin_dashboards_index_html_erb___3330517857505238097_39214860'
actionpack (3.2.14) lib/action_view/template.rb:145:in `block in render'
activesupport (3.2.14) lib/active_support/notifications.rb:125:in `instrument'
actionpack (3.2.14) lib/action_view/template.rb:143:in `render'
actionpack (3.2.14) lib/action_view/renderer/template_renderer.rb:48:in `block (2 levels) in render_template'
actionpack (3.2.14) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
activesupport (3.2.14) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.14) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.14) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.14) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'

最佳答案

要支持 group_by_day,您需要捆绑另一个 gem:groupdate来自 Chartkick 的同一作者。

关于ruby-on-rails - 未定义的方法 `group_by_day' - rails 3.2,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19763144/

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