Question

我试图了解如何使用Heist，但我发现的任何一个例子似乎都没有用，我似乎无法找到其他人遇到同样问题的我上午。我在这里找到了一些示例代码：

https://www.schoolofhaskell.com/school/to-infinity-and-beyond/older-but-still-interesting/compiled-heist-insight-with-no-snap-in-sight

但是，当我尝试运行第一个示例时，出现以下错误：

Main.hs:20:15:
    ‘hcCompiledSplices’ is not a record selector
    In the expression:
    mempty
        {hcCompiledSplices = "foo" ## splice,
        hcTemplateLocations = [loadTemplates "."]}
    In an equation for ‘heistConfig’:
        heistConfig
        = mempty
            {hcCompiledSplices = "foo" ## splice,
            hcTemplateLocations = [loadTemplates "."]}
    In the expression:
    do { let heistConfig = ...;
        heistState <- either (error "oops") id
                        <$> (runEitherT $ initHeist heistConfig);
        builder <- maybe (error "oops") fst
                    $ renderTemplate heistState "simple";
        toByteStringIO B.putStr builder }

Main.hs:22:15:
    ‘hcTemplateLocations’ is not a record selector
    In the expression:
    mempty
        {hcCompiledSplices = "foo" ## splice,
        hcTemplateLocations = [loadTemplates "."]}
    In an equation for ‘heistConfig’:
        heistConfig
        = mempty
            {hcCompiledSplices = "foo" ## splice,
            hcTemplateLocations = [loadTemplates "."]}
    In the expression:
    do { let heistConfig = ...;
        heistState <- either (error "oops") id
                        <$> (runEitherT $ initHeist heistConfig);
        builder <- maybe (error "oops") fst
                    $ renderTemplate heistState "simple";
        toByteStringIO B.putStr builder }

我做错了什么？

Answer 1

使用镜头似乎是现在做事的方法。

另外，我更改了模板<RelativeLayout android:id="@+id/content_view" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center|bottom"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="@color/colorPrimary" android:elevation="4dp" android:layout_alignParentTop="true" android:theme="@style/ThemeOverlay.AppCompat.ActionBar" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@+id/toolbar" android:orientation="vertical"> <LinearLayout android:id="@+id/content_view_panes" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:orientation="horizontal"> <WebView android:id="@+id/mainWebView" android:layout_width="match_parent" android:layout_height="match_parent" android:visibility="gone" /> <FrameLayout android:id="@+id/listContainer" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout> <RelativeLayout android:layout_width="match_parent" android:layout_height="40dp" android:background="@color/colorPrimaryDark" android:layout_below="@+id/content_view_panes" android:visibility="gone" android:id="@+id/saveCancelBar"> <Button android:id="@+id/editorCancelButton" android:layout_width="wrap_content" android:layout_height="match_parent" android:text="@string/editor_cancel" android:textColor="@color/white" android:layout_alignParentLeft="true" android:background="@color/colorPrimaryDark"/> <Button android:id="@+id/editorSaveButton" android:layout_width="wrap_content" android:layout_height="match_parent" android:text="@string/editor_save" android:textColor="@color/white" android:layout_alignParentRight="true" android:background="@color/colorPrimaryDark"/> </RelativeLayout> </LinearLayout>以使用代码simple.tpl，而不只是<h:foo>...</h:foo>。

<foo>...</foo>

Heist示例不起作用：'hcCompiledSplices'不是记录选择器

1 个答案: