小编mgh*_*mgh的帖子

我想创建一个新文件夹app/assets,在这个文件夹中我有一些文件,每个文件都有css文件夹和javascript文件夹,如下面给出的地址:

app/assets/plugins/bootstrap/css/bootstrap.min.css app/assets/plugins/bootstrap/js/bootstrap.min.js

我使用下面的代码来定义css文件,但不是true,rails无法找到并加载bootstrap.min.css:

<%= stylesheet_link_tag "bootstrap.min", media: "all", "data-turbolinks-track" => true %>

<%= stylesheet_link_tag "../plugins/bootstrap/css/bootstrap.min", media: "all", "data-turbolinks-track" => true %>

我怎样才能申报css,并javascript从plugin文件夹？

注意:当我想css通过此地址在浏览器中查看文件时:

http://localhost:3000/assets/plugins/bootstrap/css/bootstrap.min.css

我得到以下错误: No route matches [GET] "/assets/plugins/bootstrap/css/bootstrap.min.css"

但是对于存在的css文件assets/stylesheets/我可以在浏览器中通过输入地址看顶部的css文件.为什么不同的beetwin stylesheets和plugins目录？

我写这个javascript代码:

context.shadowOffsetX = 5;
context.shadowOffsetY = 5;
context.shadowBlur = 4;
context.shadowColor = 'rgba(255, 0, 0, 0.5)';
context.fillStyle = '#f00';
context.fillRect(x, y, w, h);

我在照片上添加了这个脚本,我希望看到图像的颜色,但无法为此脚本添加透明度.

在 Rails 项目中，我有 3 个控制器和模型，用户、职责和配置文件。我有以下代码：

user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_one :responsibility
  has_one :profile

  before_create :build_responsibility
  before_create :build_profile

end

responsibility.rb

class Responsibility < ActiveRecord::Base

  belongs_to :user

end

profile.rb

class Profile < ActiveRecord::Base

  belongs_to :user

  validates :user_id, uniqueness: true

  validates_numericality_of :nic_code, :allow_blank => true
  validates_numericality_of :phone_number

  validates_length_of :phone_number, :minimum => 11, :maximum => 11
  validates_length_of :nic_code, :minimum => 10, :maximum …

我写这个HTML代码:

<div id="container">
        <canvas id="imageView" width="1181" height="1181">
            <p>Unfortunately, your browser is currently unsupported by our web 
                application.</p>
        </canvas>
        <script type="text/javascript">
            window.onload = function() {
                var c = document.getElementById('imageView');
                var cxt = c.getContext('2d');
                var img = new Image();
                img.src = "map.jpg";
                cxt.drawImage(img, 0, 0);
            };
        </script>
</div>

并写这个javascript:

this.mousemove = function(ev) {
                        if (!tool.started) {
                            return;
                        }

                        var x = Math.min(ev._x, tool.x0),
                                y = Math.min(ev._y, tool.y0),
                                w = Math.abs(ev._x - tool.x0),
                                h = Math.abs(ev._y - tool.y0);
                        context.clearRect(0, 0, canvas.width, canvas.height);
                        if …

我使用"paperclip","〜> 4.1"(在Windows 8上)将图片保存到我的产品中.我有下面的代码:

products_controller:

class ProductsController < ApplicationController
  before_action :set_product, only: [:show, :edit, :update, :destroy]
  def index
    @products = Product.all
  end

  def show
  end

  def new
    @product = Product.new
  end
  def edit
    @product = Product.all
  end
  def create
    @product = Product.new(product_params)  
    respond_to do |format|
      if @product.save
        format.html { redirect_to @product, notice: 'Product was successfully created.' }
        format.json { render action: 'show', status: :created, location: @product }
      else
        format.html {
          render action: 'new'
        }
        format.json { render json: @product.errors, status: :unprocessable_entity …

我发送一个http请求并获得一个json响应,如下所示:

{"total":"1200.0","used":"35.0","available":1165.0}

现在我想反序列化这个json并在下面的表中向用户显示:

total : 1200

used : 35

availabele : 1165

我用JSON.parse(response),但我得到以下错误:

no implicit conversion of Net::HTTPOK into String

我怎样才能做到这一点？