How to integrate Rails views with angularjs ng-view?

问题

I have created rails view (ERB). However, I want to integrate it into angularjs $routeProvider, but I don't know what url should I fill into templateUrl to give me the appropriate rails view. For example, I tried:

$routeProvider.when('/pages/foo', {
templateUrl: "/pages/foo",                  
controller: "PageFoo"
                })

But the result appears as a blank page. Are the two features even integrateable? Or do I have to create new .html files, instead of using preexisting .html.erb

回答1:

Angular js provides its own routes. rails routes will always be used when you want to connect your views with database(CRUD). that is data binding with angular.js now i will show you how to use it with rails...

I want to add new user using angular js views and list all users. i will use rails as backend to store users in database so i will create user_controller

First Create resource of user. we will not create any views so be carefull for that
```
rails g resource user name:string
```
Then go to route.rb and check there is a route created, and create Home controller with index action that we will use as our single page application where our output will be yield.
```
rails g controller home index
root to: "home#index"
```
type this command on terminal where you will see our 7 routes. we never use new and edit method, because new and edit don't respond to json.
```
rake routes
```
Now we want all user with a unique name so go to create_user migration and uncomment this line and then we will migrate the database.
```
add_index :users, :name, unique: true
rake db:migrate
```
Now modify our controller so that all data fetching and insertion will be done with json format. so put this code inside users_controller.rb, if you are using rails 4 then follow this otherwise not. attributes will be adjustable in model.
```
class UsersController < ApplicationController
  respond_to :json

  def index
    respond_with User.all
  end

  def create
    respond_with User.create(user_params)
  end

  private
    def user_params
      params.require(:user).permit(:name)
    end
end
```
Its time to use angulajs in our rails application
Go to application.html.erb replace tag line with this
```
 <html ng-app="userApp">
```
Now add angular.js file in asses/javascripts, download it from http://angularjs.org/
Now we will create a controller to handle our angular application routes to know then that this controller wants something from me. so type this on terminal
```
mkdir -p app/assets/javascripts/angular/controllers
```
Now let's create the controller file itself. I'm calling this controller the "userCtrl", Thus our filename will be app/assets/javascripts/angular/controllers/userCtrl.js.coffee

In controller userCtrl

app = angular.module("userApp", ["ngResource"])

@userCtrl = ($scope, $resource) ->
  User = $resource("/users", {id: "@id"}, {update: {method: "PUT"}})
  $scope.users = User.query()

  $scope.createUser = ->
    user = User.save($scope.newUser)
    $scope.users.push(user)

(This will insert new user record into database, by creating createUser method)

Create a view for taking input from user write this code in home/index.html.erb.

<div ng-controller="userCtrl">
  <form ng-submit="createUser()">
    <label>Enter Name</label>
    <input type="text" placeholder="Enter user name" ng-model="newUser.name" />
    <button ng-click="createUser()" class="button tiny">Submit</button>
  </form>


  <!-- List all usres -->
  <h4 ng-show="users.$resolved && users.length > 1">All users</h4>
    <span ng-repeat="c in users">
      {{c.name}}<br>
    </span>
</div>

Run application and watch output.

回答2:

In this page, it gives a 'Hello World' example of scaffolding Angularjs + Rails. (Please ignore the extra parts for additional functions.) When you type any name,then get a Hello message displayed for him, you've got a functional Angularjs + rails app.

A couple of points to share:

A simple way to include angular.js file:
1. Put gem 'angularjs-rails' in your Gemfile;
2. Then put //= require angular in your app/assets/javascripts/application.js file.
3. Very likely you will need //= require angular-resource so that you can use ngResource services to access the RESTful API provided by rails applicaiton from server end. See this page for examples.

Include Rails-controller-specific javascript codes in layout this way:

Add the following codes to app/views/layouts/applications.html.erb file after the line <%= yield %>:

<%= page_specific_js = "#{params[:controller]}_#{params[:action]}" %>
<%= javascript_include_tag page_specific_js if Rails.application.assets.find_asset page_specific_js %>
<%= stylesheet_link_tag  page_specific_js if Rails.application.assets.find_asset page_specific_js %>

Remove //= require_tree . from application.js.

Include the following codes in config/initializers/assets.rb for precompiling js and css files:

Rails.application.config.assets.precompile << Proc.new do |path|
  if path =~ /\.(css|js)\z/
    full_path = Rails.application.assets.resolve(path).to_path
    app_assets_path = Rails.root.join('app', 'assets').to_path
    if full_path.starts_with? app_assets_path
      puts "including asset: " + full_path
      true
    else
      puts "excluding asset: " + full_path
      false
    end
  else
    false
  end
end

来源：https://stackoverflow.com/questions/19514669/how-to-integrate-rails-views-with-angularjs-ng-view

标签

ruby-on-rails

angularjs