回形针宝石渲染头像上传到不同的视图

Question

Hi I'm using the paperclip gem and currently a user of my website can upload his/her avatar in the edit profile page under my registrations ( devise ) the code for uploading goes like this:

  <div class="field">
    <%= f.label :avatar %><br />
    <%= f.file_field :avatar %>
  </div>

Is there a way that I can render this avatar upload in a different view? How do I go about it? I want to place it not in my devise view but my view for the user's profile.

Answer 1

On your users profile page, you can place a form with update action for your current user. It could look something like so:

users/registrations/show.html.erb

<% if current_user == @user %>
  <%= form_for current_user, url: { :action => :update } do |f| %>
    <!-- ... -->
    <div class="field">
      <%= f.label :avatar %><br />
      <%= f.file_field :avatar %>
    </div>
    <!-- ... -->
    <div class="actions">
      <%= f.submit %>
    </div>        
  <% end %>
<% end %>

Answer 2

If you want to upload the avatar in a different view, you can certainly do it.

If you want to do it in your devise view, you'll have to edit your database, model and controller.

---

You can set a "profile" action no problem, we do it here (it's only a test app, you could register for free and try it yourself...):

You must remember that the User model is not tied to Devise - you can do anything you want with it, regardless of whether it's used for authentication or not.

You can do the following:

#config/routes.rb
resources :profile, controller: :users, only: [:index, :update]

#app/controllers/users_controller.rb
class UsersController < ApplicationController
   def update
      current_user.update avatar_params
   end

   private

   def avatar_params
      params.require(:user).permit(:avatar)
   end
end

#app/views/users/index.html.erb
<%= form_for current_user, multipart: true do |f| %>
    <%= f.label :avatar %><br />
    <%= f.file_field :avatar %>
    <%= f.submit %>
<% end %>

This will have to be matched with the appropriate model code etc, but should work to allow you to upload the appropriate avatar.

You can also make the avatar appear in other parts of the app, like this:

This can be done using the standard Paperclip image file path helpers :

<%= image_tag @user.avatar.url %>

---

If you wanted to tie the avatar to the registration process, you'll have to edit the devise controller to allow the parameters :

#app/controllers/application_controller.rb
class ApplicationController < ActionController::Base
  before_filter :configure_permitted_parameters, if: :devise_controller?

  protected

  def configure_permitted_parameters
    devise_parameter_sanitizer.for(:user) << :avatar
  end
end

If you have the correct setup in your model, this should allow you to include the avatar upload facility in your Devise registrations view.

Answer 3

In you view you can show it like this

<%= image_tag(@user.image.url %>

or if you have different sizes, then you may render like this

<%= image_tag(@user.image.url(:original) %> # :original is image defined in model.