Javascript Rails国家/地区\u选择ReactJs中的Gem

今天早上我尽量不做傻事，但我发现自己喜欢使用HTML5

data-*

属性。我已经安装了rails gem，它在

html.erb

中运行良好，格式如下：

<%= f.country_select :location, { priority_countries: ["GB", "US"], selected: "GB" } %>

我愚蠢的把这件事扯进Reactjs的方式是：

html.erb:

<div id="foo" data-countries="<%= f.country_select :location, { priority_countries: ["GB", "US"], selected: "GB" } %>"></div>

getInitialState: function() {
  return {
    location: this.props.data.location
  }
},

geo: function(event) {
  this.setState({location: event.target.value});
},

render: function(){
  var bar = document.getElementById('foo');  

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           <option value="{bar.dataset.countries}">{bar.dataset.countries}</option>
         </select>
      </div>
    )
 }

def country
  country = ISO3166::Country
  c = country.all
  c.map do |a| a.name end
end

def method_name
 c = User.new
 # Calling the method from user.rb
 @country = c.country
end

render: function(){
  var country = (c) => (<option key={c} value={c}>{c}</option>) 

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           {this.props.country.map(country)}
         </select>
      </div>
    )

对于以上内容，我通常对方法执行此操作

js.jsx:

<div id="foo" data-countries="<%= f.country_select :location, { priority_countries: ["GB", "US"], selected: "GB" } %>"></div>

getInitialState: function() {
  return {
    location: this.props.data.location
  }
},

geo: function(event) {
  this.setState({location: event.target.value});
},

render: function(){
  var bar = document.getElementById('foo');  

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           <option value="{bar.dataset.countries}">{bar.dataset.countries}</option>
         </select>
      </div>
    )
 }

def country
  country = ISO3166::Country
  c = country.all
  c.map do |a| a.name end
end

def method_name
 c = User.new
 # Calling the method from user.rb
 @country = c.country
end

render: function(){
  var country = (c) => (<option key={c} value={c}>{c}</option>) 

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           {this.props.country.map(country)}
         </select>
      </div>
    )

getInitialState:function（）{
返回{
位置：this.props.data.location
}
},
地理位置：功能（活动）{
this.setState（{location:event.target.value}）；
},
render:function（）{
var bar=document.getElementById（'foo'）；
返回(
请选择
{bar.dataset.countries}
)
}

---

在我看来，所有国家都是由

html.erb

中的

数据国家

造成的。同样在渲染下拉菜单中，我看到“请选择”和

我找到了它！基本上，您需要：

在您的用户模型中：

<div id="foo" data-countries="<%= f.country_select :location, { priority_countries: ["GB", "US"], selected: "GB" } %>"></div>

getInitialState: function() {
  return {
    location: this.props.data.location
  }
},

geo: function(event) {
  this.setState({location: event.target.value});
},

render: function(){
  var bar = document.getElementById('foo');  

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           <option value="{bar.dataset.countries}">{bar.dataset.countries}</option>
         </select>
      </div>
    )
 }

def country
  country = ISO3166::Country
  c = country.all
  c.map do |a| a.name end
end

def method_name
 c = User.new
 # Calling the method from user.rb
 @country = c.country
end

render: function(){
  var country = (c) => (<option key={c} value={c}>{c}</option>) 

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           {this.props.country.map(country)}
         </select>
      </div>
    )

现在在适当的控制器中的某个位置：

<div id="foo" data-countries="<%= f.country_select :location, { priority_countries: ["GB", "US"], selected: "GB" } %>"></div>

getInitialState: function() {
  return {
    location: this.props.data.location
  }
},

geo: function(event) {
  this.setState({location: event.target.value});
},

render: function(){
  var bar = document.getElementById('foo');  

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           <option value="{bar.dataset.countries}">{bar.dataset.countries}</option>
         </select>
      </div>
    )
 }

def country
  country = ISO3166::Country
  c = country.all
  c.map do |a| a.name end
end

def method_name
 c = User.new
 # Calling the method from user.rb
 @country = c.country
end

render: function(){
  var country = (c) => (<option key={c} value={c}>{c}</option>) 

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           {this.props.country.map(country)}
         </select>
      </div>
    )

因为我在使用，在我看来：

<%= react_component('NewProject', { country: @country }) %>



js.jsx:

<div id="foo" data-countries="<%= f.country_select :location, { priority_countries: ["GB", "US"], selected: "GB" } %>"></div>

getInitialState: function() {
  return {
    location: this.props.data.location
  }
},

geo: function(event) {
  this.setState({location: event.target.value});
},

render: function(){
  var bar = document.getElementById('foo');  

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           <option value="{bar.dataset.countries}">{bar.dataset.countries}</option>
         </select>
      </div>
    )
 }

def country
  country = ISO3166::Country
  c = country.all
  c.map do |a| a.name end
end

def method_name
 c = User.new
 # Calling the method from user.rb
 @country = c.country
end

render: function(){
  var country = (c) => (<option key={c} value={c}>{c}</option>) 

  return (
      <div>
        <select
           value={this.state.location}
           onChange={this.geo}
         >
           <option value="" selected disabled>Please select</option>
           {this.props.country.map(country)}
         </select>
      </div>
    )

render:function（）{
变量国家=（c）=>（{c}）
返回(
请选择
{this.props.country.map（国家）}
)

现在我得到了我的下拉列表。希望这对其他人有用