如何为RSPEC创建用于Activestorage变体的固定装置？

发布于 2025-01-27 23:21:37 字数 2463 浏览 4 评论 0原文

关于个人项目的摘要

，我有一种根据视口大小来引用Activestorage Resource的变体的观点。我正在尝试确保视图也使用规格中的正确变体，但是正在遇到nomethoderror问题。

分解

例如，

<div>
  <%= image_tag @post.image.variant(:web).processed.url %>
</div>

为以下视图部分：和此规格：

feature 'Posts', type: :feature do
  fixtures :posts, :users

  scenario 'Accessing a public post via ID' do
    visit post_path(posts(:one).id)
    expect(page).to have_css("#post-#{posts(:one).id}")
  end
end

以及这些固定装置（定义为官方指南）：

posts.yml：

one:
  user: rafael
  filter: gotham
  private: false
  caption: This is a beautiful fixture

active_storage/actionments.yml：

one:
  name: image
  record: rafael (User)
  blob: one_blob

active_storage/blobs.ymls.yml：

one_blob:
  <%= ActiveStorage::FixtureSet.blob filename: 'storage/brighton-pier.jpg', service_name: 'test' %>

视图无法呈现：

NoMethodError:
  undefined method `processed' for nil:NilClass

这是有道理的，因为固定装置没有定义的变体。

编辑＃1

POST模型具有一组预定义的变体：

class Post < ApplicationRecord
  belongs_to :user
  has_many :comments, dependent: :destroy
  has_one_attached :image, dependent: :destroy do |attachable|
    attachable.variant :web, resize_to_fill: [1200, 1200, { crop: :attention }]
    attachable.variant :opengraph, resize_to_fill: [200, 630, { crop: :attention }]
    attachable.variant :twitter, resize_to_fill: [1024, 512, { crop: :attention }]
    attachable.variant :mobile, resize_to_fill: [600, 600, { crop: :attention }]
    attachable.variant :thumb, resize_to_fill: [100, 100, { crop: :attention }]
  end

  ...
end

问题

如何在Activestorage固定装置中添加变体？

原文

Summary

On a personal project, I have a view that references an ActiveStorage resource's variant, based on viewport size. I'm trying to ensure that the views use the correct variants in the specs as well, but am running into NoMethodError problems.

Breakdown

For example, with the following view partial:

<div>
  <%= image_tag @post.image.variant(:web).processed.url %>
</div>

And this spec:

feature 'Posts', type: :feature do
  fixtures :posts, :users

  scenario 'Accessing a public post via ID' do
    visit post_path(posts(:one).id)
    expect(page).to have_css("#post-#{posts(:one).id}")
  end
end

And these fixtures (defined as per the official guide):

posts.yml:

one:
  user: rafael
  filter: gotham
  private: false
  caption: This is a beautiful fixture

active_storage/attachments.yml:

one:
  name: image
  record: rafael (User)
  blob: one_blob

active_storage/blobs.yml:

one_blob:
  <%= ActiveStorage::FixtureSet.blob filename: 'storage/brighton-pier.jpg', service_name: 'test' %>

The views fail to render with:

NoMethodError:
  undefined method `processed' for nil:NilClass

This makes sense, because the fixtures do not have variants defined.

Edit #1

The Post model has a set of predefined variants:

class Post < ApplicationRecord
  belongs_to :user
  has_many :comments, dependent: :destroy
  has_one_attached :image, dependent: :destroy do |attachable|
    attachable.variant :web, resize_to_fill: [1200, 1200, { crop: :attention }]
    attachable.variant :opengraph, resize_to_fill: [200, 630, { crop: :attention }]
    attachable.variant :twitter, resize_to_fill: [1024, 512, { crop: :attention }]
    attachable.variant :mobile, resize_to_fill: [600, 600, { crop: :attention }]
    attachable.variant :thumb, resize_to_fill: [100, 100, { crop: :attention }]
  end

  ...
end