失败/错误：click_button“添加电影”ActionController :: ParameterMissing：参数丢失或值为空：电影

我一直在寻找其他答案，我仍然得到这个错误与params失踪。我猜这是一个回形针问题，但通过搜索文档后，我找不到解决此问题的任何内容。失败/错误：click_button“添加电影”ActionController :: ParameterMissing：参数丢失或值为空：电影

我的特色规格

scenario "An Admin creates a new movie" do 
     visit "/" 
    click_link "Add New Movie"``` 

    fill_in "Title", with: "Creating first movie" 
    fill_in "Synopsis", with: "Lorem Ipsum" 
    fill_in "Year Released", with: "Date" 
    click_button "Add Movie" 

    expect(page).to have_content("Movie has been created") 
    expect(page.current_path).to eq(root_path) 
    expect(page).to have_content("Created by: #{@kyle.email}")``` 

end

我的电影模型

class Movie < ApplicationRecord 
    has_many :comments 
    belongs_to :admin 

    validates :title, presence: true 
    validates :synopsis, presence: true 
    validates :year_released, presence: true 

    has_attached_file :photo, styles: { medium: "300x200>", thumb: "100x100>" },   default_url: "/images/:style/missing.png"

validates_attachment_file_name：照片，匹配：[？/ PNG \ Z /，/ JPE克\ Z /]```

我的控制器

def update 
    if @movie.update(movie_params) 
    flash[:success] = "Movie has been updated" 
    redirect_to @movie 
    else 
    flash.now[:danger] = "Movie has not been updated" 
    render :edit 
    end 
end 

private 

def movie_params 
    params.require(:movie).permit(:title, :synopsis, :year_released, :photo) 
end

我_form.html.erb

<div class="form-group"> 
    <div class='control-label col-md-3'> 
    <%= f.label :photo %> 
    </div> 
    <div class='col-md-10'> 
    <%= f.file_field :photo, class: "btn btn-primary btn-sl pull-left" %> 
    </div> 

<div class='form-group'> 
<div class='col-md-offset-1 col-md-11'> 
    <%= f.submit "Add Movie", class: "btn btn-primary btn-lg pull-right" %> 
</div>

错误

Failure/Error: click_button "Add Movie" 
ActionController::ParameterMissing: 
param is missing or the value is empty: movie```

我Github如果neccessary。

来源

2016-04-28 kyle

如何是你的form_for像 – uzaif

'''<％=的form_for（@movie）％> <％= f.label：标题％> <％= f.text_field：标题，类：“形式控制'，占位符：'电影标题'，自动对焦：true％> <％= f.label：synopsis％> <％= f.text_area：synopsis，rows：10，class：'form-control'，占位符： '简介'％> <％= f.label：photo％> <％= f.file_field：photo，class：“btn btn-primary btn-sl pull-left”％>''' – kyle

更新时发生错误电影？ – uzaif

我认为这是因为您在strong_params中使用require。

我改变你的代码

def movie_params 
    params.fetch(:movie, {}).permit(:title, :synopsis, :year_released, :photo) 
end

，并通过测试。

[[email protected] ~/temp/moviesmoviesmovies]$ git:(development) rspec spec/features/creating_movies_spec.rb 
DEPRECATION WARNING: use_transactional_fixtures= is deprecated and will be removed from Rails 5.1 (use use_transactional_tests= instead). (called from <top (required)> at /Users/retgoat/temp/moviesmoviesmovies/spec/features/creating_movies_spec.rb:3) 
.. 

Finished in 0.73751 seconds (files took 1.91 seconds to load) 
2 examples, 0 failures

另外我在浏览器中试过所有按预期去 - 我看到验证错误。

文档是here

而且that职位是有益的。

来源

2016-04-28 02:28:25 retgoat

太棒了！非常感谢你！ retgoat – kyle

欢迎，@kyle :) – retgoat

失败/错误：click_button“添加电影”ActionController :: ParameterMissing：参数丢失或值为空：电影

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