扶手：的form_for和单选按钮

如果用户的multiple_classes属性在数据库中选择一个真正的我已经在我的form_for扶手：的form_for和单选按钮

<div class="multiple_students"> 
     <%= f.label :multiple_classes, "Do you teach multiple classes?" %> 
     <%= f.radio_button :multiple_classes, 1, checked: @user.multiple_classes?, class: 'multiple_classes', data: { question: 'What is your average class size?' } %> <%= f.label :multiple_classes, "Yes", class: 'multiple_classes' %> 
     <%= f.radio_button :multiple_classes, 0, checked: @user.multiple_classes?, class: 'multiple_classes', data: { question: 'How many kids do you teach?' } %> <%= f.label :multiple_classes, "No", class: 'multiple_classes' %> 
    </div> 
    <div class="number_of_students hide"> 
     <%= f.label :students %> 
     <%= f.text_field :students, :class=>"student_count required digits" %> 
    </div>

以下出于某种原因，“否”为必检，甚至（multiple_classes是数据库中的布尔类型）

来源

2013-03-26 dennismonsewicz

你为什么要创建两个单选按钮？你可以做到这一点不是吗？ – Vinay 2013-03-26 15:09:41

@Vinay - 你能给我一个如何做的例子吗？ – dennismonsewicz 2013-03-26 15:11:44

你需要两个单选按钮吗？ – Vinay 2013-03-26 15:12:35

好吧，如果你只想使用radio_buttons，请检查以下内容并告诉我这是否可行。

<%= f.radio_button :multiple_classes, "1", checked: @user.multiple_classes?, class: 'multiple_classes', data: { question: 'What is your average class size?' } %> <%= f.label :multiple_classes, "Yes", class: 'multiple_classes' %> 
<%= f.radio_button :multiple_classes, "0", checked: @user.multiple_classes?, class: 'multiple_classes', data: { question: 'How many kids do you teach?' } %> <%= f.label :multiple_classes, "No", class: 'multiple_classes' %>

把用引号1和0和尝试....

它不是一个答案......它只是一个想法...

来源

2013-03-26 15:21:45 Vinay

的问题始终检查“否”是一个错字。

如果恢复@user.multiple_classes?为"No"，复选框将被选中，如果@user.multiple_classes?是true，所以接下来的代码块应该很好地工作：

<%= f.radio_button :multiple_classes, 1, checked: @user.multiple_classes?, class: 'multiple_classes', data: { question: 'What is your average class size?' } %> <%= f.label :multiple_classes, "Yes", class: 'multiple_classes' %> 
<%= f.radio_button :multiple_classes, 0, checked: [email protected]_classes?, class: 'multiple_classes', data: { question: 'How many kids do you teach?' } %> <%= f.label :multiple_classes, "No", class: 'multiple_classes' %>

来源

2016-06-03 14:44:48 rakvium

扶手：的form_for和单选按钮

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