使用轨道上的回形针 gem ruby​​ 在视图中从不同视图访问图像 [英] Access image from different view in a view with paperclip gem ruby on rails

问题描述

我是 Ruby on Rails 的新手，正在学习它.我想在另一个视图中访问带有由 paperclip gem 存储的图像的表，例如在我的应用程序中，我有原因控制器，我可以通过以下代码访问存储在表中的视图原因中的图像:

I'm new in Ruby on Rails and learning it. I want to access a table with images stored by paperclip gem in another view, for example in my application, I have the causes controller, I can access the image in the view causes stored in the table by this code:

 =image_tag @cause.images.first.image.url(:thumb), 

但我也可以访问，从配置文件控制器存储在表中的图像.那么，我如何访问视图原因中的视图配置文件的对象?我在原因控制器中尝试:

But i have access too, the images stored in the table from a profile controller. So, how do i access the object of view Profiles in the view Causes? I try in the causes controller:

-> @profile = Profile.all -> =image_tag @profile.images.first.image.url(:thumb), 

但不起作用，所以朋友们，我该如何解决这个问题?谢谢.

but not work, so friends, how do i resolve this problem? Thanks.

推荐答案

首先，在原因控制器中，将 @profile 复数，因为 Profile.all 将返回一个数组所有配置文件.即改变 @profile = Profile.all 到 @profiles = Profile.all

Firstly, in the causes controller, pluralize @profile because Profile.all will return an array of all profiles. i.e. change @profile = Profile.all to @profiles = Profile.all

因为@profiles是一个数组，需要遍历视图中的每个数组项 原因:

Because @profiles is an array, you need to iterate through each array item in the view Causes:

<% @profiles.each do |profile| %>
  <%= image_tag profile.images.first.image.url(:thumb) %>
<% end %>

如果您只想返回单个配置文件图像，则需要在控制器中指定哪个配置文件.即

If you only intend on returning a single profile image then you will need to specify which profile in the controller. i.e.

@profile = Profile.first

或者如果原因模型属于配置文件模型:

or if the cause model belongs to the profile model:

@profile = Profile.find(params[:profile_id])

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