Question

我有一个.html.erb文件，它应该在某个参数为“true”时打印一条消息，而在另一个参数为“false”时打印一条消息。这是文件的代码：

<%= if params[:result] == "true" %>
    <h1>Success</h1>
    <p>The words <%=params[:first] %> and <%= params[:second] %> are anagrams! <br>
<%= else %>
    <h1>Oh no!</h1>
    <p>The words <%=params[:first] %> and <%= params[:second] %> are not anagrams. <br>
<br>
<%= link_to 'Try another pair', welcome_index_path%>

但是我收到了这个错误：

/home/mariana/Documents/RD-anagram/anagram/app/views/solver/result.html.erb:3: syntax error, unexpected ')', expecting keyword_then or ';' or '\n' if @result == "true" );@output_buffer.safe_append=' 

/home/mariana/Documents/RD-anagram/anagram/app/views/solver/result.html.erb:6: syntax error, unexpected keyword_else '.freeze;@output_buffer.append=( else );@output_buffer.safe_append=' 

/home/mariana/Documents/RD-anagram/anagram/app/views/solver/result.html.erb:11: syntax error, unexpected keyword_ensure, expecting ')' 

/home/mariana/Documents/RD-anagram/anagram/app/views/solver/result.html.erb:13: syntax error, unexpected keyword_end, expecting ')'

Answer 1

if语句应该是这样的。正在删除＆lt;％= if％＆gt;到＆lt;％if％＆gt;应该工作。

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:WpfCustomControlLibrary1">

    <DataTemplate x:Key="ItemTemplate_List">
        <TextBlock Text="{Binding Text}" HorizontalAlignment="Left"/>
    </DataTemplate>

    <DataTemplate x:Key="ItemTemplate_ListCheck">
        <Grid>
            <CheckBox IsChecked="{Binding IsChecked}"/>
            <TextBlock Text="{Binding Text}" Margin="20,0,0,0" HorizontalAlignment="Left"/>
        </Grid>
    </DataTemplate>

    <Style TargetType="{x:Type local:MyListView}">
        <Style.Triggers>

            <Trigger Property="Mode" Value="List">
                <Setter Property="ItemTemplate" Value="{StaticResource ItemTemplate_List}"/>
            </Trigger>

            <Trigger Property="Mode" Value="ListCheck">
                <Setter Property="ItemTemplate" Value="{StaticResource ItemTemplate_ListCheck}"/>
            </Trigger>

        </Style.Triggers>
    </Style>

</ResourceDictionary>

Answer 2

复制以下代码

<% if params[:result] %>
<h1>Success</h1>
<p>The words <%=params[:first] %> and <%= params[:second] %> are  anagrams! <br>
<%else %>
<h1>Oh no!</h1>
<p>The words <%=params[:first] %> and <%= params[:second] %> are not anagrams. <br>
<%end%>

“语法错误，意外'）'”在.html.erb文件中，在if语句之后

2 个答案: