[英]Rails - Routing Error - Calling a model from another model
问题:我的目标是在用户页面下列出项目,并在此用户页面上列出的每个项目下显示注释框。 但是当我尝试呈现注释框表单时,出现了路由错误。 我知道这是因为它无法提取项目的ID。 我的猜测与控制器有关,但尚未弄清楚。 有人知道我该怎么解决吗?
Routing Error
No route matches {:controller=>"comments", :format=>nil, :project_id=>#<Project id: nil...>}
对于我的应用程序,我为用户,项目和注释创建了模型和控制器。 注释属于项目,项目属于用户
user.rb
has_many :projects
project.rb
has_many :comments
belongs_to :user
comment.rb
belongs_to :project
routes.rb
resources :users do
resources :projects do
resources :comments
end
end
resources :projects do
resources :comments
end
resources: comments
view / users / projects.html.erb
<%= render @projects %>
view / projects / _project.html.erb
<%= project.content %>
<%= render 'comments/form' %>
view / comments / _form.html.erb
<%= form_for([@project, @project.comments.build]) do |f| %>
<div class="field">
<%= f.text_area :content, :class => "span12", :rows => "3" %>
</div>
<%= f.hidden_field :user_id, :value => current_user.id %>
<div class="actions">
<%= f.submit "Add Comment", :class => "btn btn-header" %>
</div>
<% end %>
comments_controller.rb
def create
@project = Project.find(params[:project_id])
@comment = @project.comments.create!(params[:comment])
if @comment.save
redirect_to projects_user_path(@project.user)
end
end
上面的重定向错误
NoMethodError in CommentsController#create
undefined method `user'
尝试这个:
view / projects / _project.html.erb
<%= project.content %>
<%= render 'comments/form', project: project %>
view / comments / _form.html.erb
<%= form_for([project, project.comments.build]) do |f| %>
...
您必须通过项目才能形成局部项目。
希望这可以帮助!
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