Rails多个复选框--check_box_tag 一、简单粗暴的解决方法 view <% @roles.each do |role| %> <%= check_box_tag'roles[]', role.id%> <%= label_tag role.name %> <% end %> 生成HTML页面效果 SuperadminTeacherStudent controller获得信息 "roles"=>["2","3"] #params[:roles] 二、规范方法...
答案: 在Rails中,check_box_tag是一个用于创建复选框的辅助方法。要使用默认值选中复选框,您可以将checked选项设置为true。以下是一个示例: 代码语言:ruby 复制 check_box_tag "name", "value", true 在这个例子中,name是复选框的名称,value是复选框的值,true表示复选框将被默认选中。 如果您想要根据某个...
即按值传递； 3.按值传递意味着当一个参数传递给一个函数的时候，函数接收
PROBLEM TO BE SOLVED: To provide a housing box which prevents reception of wrong electric waves and allows a reading system to read an IC tag without opening the housing box even in a housing box made of an electric wave impermeable material, and to provide the reading system of the ...
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Rails check_box_tag - Ruby check_box_tag是Rails中的一个helper方法,用于创建一个HTML的checkbox标签。它可以用于提交表单数据或做一些交互。 语法 check_box_tag(name, value = "1", checked = false, options = {}) 参数说明: name (必需):创建的checkbox对象的名称 value (可选):checkbox的值。默认...
<%= check_box_tag'Complete', task.complete, task.complete, :data => {:remote =>true, :url => url_for( :action =>'complete', :id => task.id, :complete => task.complete ), :method => :put}, :class=> 'input-large' %> <%end%> Run Code...
I'm very new in jsf, so please help me my question. Java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean.
<% @cursos.each do |c| %> <%= check_box_tag "vaga[curso_ids][]", c.id...
BOX INSPECTION DEVICE CAPABLE OF SHORTENING A WORK TIME AND IMPROVING WORK EFFICIENCY THROUGH A TAG CHECKPURPOSE: A box inspection device is provided to shorten a work time and improve work efficiency by easily checking a tag which is attached to the outside of a box.;CONSTITUTION: A box ...