WebWork Frame Select tag

<ww:select/> Generates a list of select options. The Quot;listkey property is the property used by each element in the list to generate <option> label value. The "ListValue" property fills the option's text label (display name). One major feature is that the appropriate options are automatically selected based on the "value" attribute. If value is equal to the current Listkey, the option is set to selected (if the type matches; see below). <ww:select label= "' Users '" Name= "' UserId '" listkey= "id" Listvalue= "Name" List= "App.users" Value= "App.user.id" Onchange= "' Chooseuser (This) '" /> The following results are generated (assuming Getapp (). GetUser (). GetId () = 2): <tr> <td>Users</td> <td> <select name= "UserId" onchange= "Chooseuser (This)" > <option value= "1" > User Number One </option> <option value= "2" selected= "selected" > User Number Two </option> </select> <td> </tr> Of course, the <td> format depends on the template you use. usage Examples <ww:select label= "' Pets '"         name= "' Petids '          list= "Petdao.pets"         listkey= "id"         listvalue= "name"         Multiple= "true"         size= "3"          required= "true" /> <ww:select label= "' Months '          name= "' months '" "         list=" #{': ' Before--"," ': ' Feb ', [...]} "         value= "Selectedmonth"          required= "true" /> //The Month ID (.) returned by the Getselectedmonth () call //again St The stack would be auto-selected Note: For any label that uses the list data (select may be the most common), it uses the OGNL list notation (see the example above "months"), and note that the key values (in the months example, ' 01 ', ' 02 ', and so on) are manually entered. ' 1 ' is a character, ' 01 ' is a string, ' 1 ' is a string. If the values returned by the Value property are not the same as the key value types in the list, they cannot be matched even if the string values are the same. If it does not match, the list will not have an automatically selected option. Property name Required Description Id Whether ID attribute of HTML Name is The Name property of the HTML Value Whether Field value List Whether The iteration data source used by the list, if the strong table is a map (key, value), the key will be the value of option, value as its content (body) Listkey Whether The key Value property of a list object ListValue Whether Content Properties for list objects Headerkey Whether The first option's build value Headervalue Whether The value of the first option Emptyoption Whether Do you want to add a blank (--) option after the option header (header option) Multiple Whether Do you want to allow multiple selections? Size Whether Size property of HTML Disabled Whether Disabled properties of HTML TabIndex Whether TabIndex Properties of HTML OnChange Whether onchange Properties of HTML OnClick Whether The OnClick property of HTML Label Whether For label text in a template LabelPosition Whether Label Alignment (Left,right,center) Required Whether is a required field when the form is submitted CssClass Whether The class attribute of HTML CSSStyle Whether The Style property of HTML Theme Whether Topics to use Template Whether Template name to use