Question

我正在尝试实现一种过滤功能，该功能将按类型显示商家。这是“搜索表单”，用户可以在其中选择要显示的业务类型

@(businessList: List[Business], formSearch: Form[Business])

@import helper._

@main("All businesses"){

@form(action=routes.Application.displayAllBusinesses("")){
     @select(formSearch("type"),options(Seq("Dining","Accomodation","Manufacturing","Retail", "Services")),'_label ->"Business Type",'_default->"--Select a business type--")

    <input type="submit" class="btn btn-success" value="Search by type">
    <a class="btn"  href="@routes.Application.displayAllBusinesses()">Show all businesses</a>
    <a class="btn" href="/registerBusiness">Register a business</a>
}

然后我有一个for循环来显示所有业务：

<ul>
    @for(business <- businessList) {
        <li>
            <p>Business Name: @business.getName()</p>
            <p>Business Type: @business.getType()</p>
            <p>Business Email: @business.getEmail()</p>
            <p>Business Location: @business.getLocation()</p>
            <p>Business Description: @business.getDescription()</p>
            <p>Id is: @business.id </p>

           <a class="btn" href="@routes.Application.displayUpdateBusiness(business.id)">Update</a>
            @form(routes.Application.deleteBusiness(business.id)) {
                <input class="btn" type="submit" value="Delete"> 
            }
        </li>
    }
</ul>

当用户提交表单时，displayAllbusinesses路由看起来像（这是出现错误的地方）：

GET      /listBusinesses            controllers.Application.displayAllBusinesses(type: String ?= "all")

app / Application.java中的displayAllbusinesses方法是：

public static Result displayAllBusinesses(String type){
    List<Business> businesses;
    if(type=="all"){
        businesses = allBusinesses;
    } else {
        businesses = Business.find.where().like("type", type).findList();
        //TRACE
        System.out.println(businesses);
   }
   return ok(listBusinesses.render(businesses, businessForm));
}

当我运行此代码时，我得到/ listBusinesses路由的“非法启动简单表达式”。这是什么意思？

Answer 1

type是Scala中的保留关键字。路由编译器没有正确地转发它，我认为这是一个已知的错误。

Answer 2

答案：我在路线中大写了类型

controllers.Application.displayAllBusinesses(Type: String ?= "all")

并将搜索表单更改为大写类型

@form(action=routes.Application.displayAllBusinesses("")){
 @select(formSearch("Type"),options(Seq("Dining","Accomodation","Manufacturing","Retail", "Services")),'_label ->"Business Type",'_default->"--Select a business type--")

现在有效。去图

播放框架 - 非法启动简单表达

2 个答案: