将值从表单传递给控制器​​变量

Question

我正在使用Tumblr API来布局博客的所有帖子。这是我在控制器中的索引方法：

def index
    # Keys given from Tumblr API
    @key = '[my key]'
    @secret = '[my secret]'
    @oauth_token = '[my oauth token]'
    @oauth_token_secret = '[my oauth token secret]'

    # Sets the client that allows interfacing with Tumblr
    @client = Tumblr::Client.new(
      :consumer_key => @key,
      :consumer_secret => @secret,
      :oauth_token => @oauth_token,
      :oauth_token_secret => @oauth_token_secret
    )

    # Make the request
    @blog = "[blogname].tumblr.com"
    @posts = @client.posts(@blog, :type => "photo")["posts"] #gets a posts array
    # @posts = Kaminari.paginate_array(@posts["posts"]).page(params[:page]).per(10)

    # # Photography posts only (other types follow the same pattern)
    # @photoPosts = @myClient.posts("YOURTUMBLR.tumblr.com", 
    #                               :limit => 5, 
    #                               :type => "photo")
    # @photoPosts = @photoPosts["posts"]

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @posts }
    end
  end

这一切都很完美。但是，我希望“@blog”是动态的。因此，在视图中我需要一个用户可以输入tumblr博客的表单。我只是不知道如何连接这两个。有人有个主意吗？

谢谢！

---

修改 控制器：

class BlogController < ApplicationController
  def index
    @blog = "#{params[:blogname]}.tumblr.com"
  end

  def show
    # Keys given from Tumblr API
    @key = '[my key]'
    @secret = '[my secret]'
    @oauth_token = '[my oauth token]'
    @oauth_token_secret = '[my oauth token secret]'

    # Sets the client that allows interfacing with Tumblr
    @client = Tumblr::Client.new(
      :consumer_key => @key,
      :consumer_secret => @secret,
      :oauth_token => @oauth_token,
      :oauth_token_secret => @oauth_token_secret
    )

    # Make the request
    @posts = @client.posts(@blog, :type => "photo")["posts"]

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @posts }
    end
  end
end

index.html.erb：

<%= form_tag( method: "get", url: "blog" ) do %>
  <%= text_field_tag(:blogname) %>
  <%= submit_tag %>
<% end %>

show.html.erb：

<section class="section section_grid has_no-pad">
  <h1 class="is_white is_bold is_uppercase"><%= p @posts.first["blog_name"] %></h1>

  <ul class="s-grid-2 has_isotope">
    <% @posts.each do |post| %>

      <% @type = post["type"] # the type of post %>
      <% @url = post["post_url"] # the url for the post %>

      <% if @type == "photo" %>

        <% @pictures = post["photos"] %>

        <% @pictures.each do |pic| %>
          <% @pic_url = pic["original_size"]["url"] %>

          <li>
            <%= image_tag(@pic_url) %>
          </li>
        <% end %>

      <% end %>
    <% end %>
  </ul>
</section>

路线：

Prefix     Verb URI Pattern           Controller#Action
blog_index GET  /blog/index(.:format) blog#index
      root GET  /                     blog#index

Answer 1

阅读the guide and it's chapter about forms可能会有好处。

在您的控制器中，您将从params哈希中获取提交的值：

# controller
@blog = "#{params[:blogname]}.tumblr.com"

在模板中，您将实现一个表单以将值提交给rails app：

# index.html.erb
<%= form_tag method: :get do %>
  <%= input_tag :blogname %>
  <%= submit_tag %>
<% end %>

上面的代码来自我的头脑，完全未经测试。