如何在其他scss文件中使用angular material主题颜色变量

Question

对于学校作业，我们需要使用 angular material。我制作了一个名为：weather-theme.scss

的自定义主题

该文件中的代码如下：

@import '~@angular/material/theming';

@include mat-core();

// Define the palettes for your theme using the Material Design palettes available in palette.scss
// (imported above). For each palette, you can optionally specify a default, lighter, and darker
// hue. Available color palettes: https://material.io/design/color/
$weather-theme-primary: mat-palette($mat-gray, 800, 700, 600);
$weather-theme-accent: mat-palette($mat-amber, 800, 700);

// The warn palette is optional (defaults to red).
$weather-theme-warn: mat-palette($mat-red);

// Create the theme object (a Sass map containing all of the palettes).
$weather-theme-theme: mat-light-theme(
    $weather-theme-primary,
    $weather-theme-accent,
    $weather-theme-warn
);

// Include theme styles for core and each component used in your app.
// Alternatively, you can import and @include the theme mixins for each component
// that you are using.
@include angular-material-theme($weather-theme-theme);

主题有效。

我用代码在 styles.scss 中导入主题：

@import url('https://fonts.googleapis.com/css?family=Nunito&display=swap');

@import './weather-theme.scss';
//@import './variables.scss';

html,
body {
    font-family: 'Nunito';
}

html,
body {
    height: 100%;
}
body {
    margin: 0;
}

现在的问题是，我想在其他样式中使用 Theme 变量，比如我想为主体赋予原色，代码如下：

body { 
    margin: 0;
    background-color: $weather-theme-primary;
}

但是当我导入 weather-theme.scss 时，scss intellisense 重新识别了变量，它不起作用，我收到以下错误：

ERROR in ./src/scss/styles.scss (./node_modules/@angular-devkit/build-angular/src/angular-cli-files/plugins/raw-css-loader.js!./node_modules/postcss-loader/src??embedded!./node_modules/sass-loader/lib/loader.js??ref--15-3!./src/scss/styles.scss)
Module build failed (from ./node_modules/sass-loader/lib/loader.js):

    background-color: $weather-theme-primary;
                     ^
      (50: #fafafa, 100: #f5f5f5, 200: #eeeeee, 300: #e0e0e0, 400: #bdbdbd, 500: #9e9e9e, 600: #757575, 700: #616161, 800: #424242, 900: #212121, A100: #ffffff, A200: #eeeeee, A400: #bdbdbd, A700: #616161, contrast: (50: rgba(0, 0, 0, 0.87), 100: rgba(0, 0, 0, 0.87), 200: rgba(0, 0, 0, 0.87), 300: rgba(0, 0, 0, 0.87), 400: rgba(0, 0, 0, 0.87), 500: rgba(0, 0, 0, 0.87), 600: white, 700: white, 800: white, 900: white, A100: rgba(0, 0, 0, 0.87), A200: rgba(0, 0, 0, 0.87), A400: rgba(0, 0, 0, 0.87), A700: white), default: #424242, lighter: #616161, darker: #757575, text: #424242, default-contrast: white, lighter-contrast: white, darker-contrast: white, "50-contrast": rgba(0, 0, 0, 0.87), "100-contrast": rgba(0, 0, 0, 0.87), "200-contrast": rgba(0, 0, 0, 0.87), "300-contrast": rgba(0, 0, 0, 0.87), "400-contrast": rgba(0, 0, 0, 0.87), "500-contrast": rgba(0, 0, 0, 0.87), "600-contrast": white, "700-contrast": white, "800-contrast": white, "900-contrast": white, "A100-contrast": rgba(0, 0, 0, 0.87), "A200-contrast": rgba(0, 0, 0, 0.87), "A400-contrast": rgba(0, 0, 0, 0.87), "A700-contrast": white, "contrast-contrast": null) isn't a valid CSS value.
   ╷
13 │     background-color: $weather-theme-primary;
   │                       ^^^^^^^^^^^^^^^^^^^^^^
   ╵
  stdin 13:23  root stylesheet
      in /media/sean-paul/Data/Projects/School/CSP/OpenWeatherAngularApp/src/scss/styles.scss (line 13, column 23)

我做错了什么？

注：我用angular8

提前致谢！

Answer 1

您的变量是一张地图。您必须声明您想要的属性。

background-color: map-get($weather-theme-primary, 100)

Answer 2

您在 weather-theme.scss 中创建的 $weather-theme-primary 不包含单个值，而是包含整个调色板。查看您创建它的 mixin 的名称，以及在错误消息中，您可以看到被转储的实际对象（... 50: #fafafa, 100: #f5f5f5, ...，其中 50 是第一个键，#fafafa 是它的颜色，100 是第二个键，#f5f5f5 是它的颜色，等等...）。

您可以通过以下方式从地图中提取值：

$my-color: map-get($weather-theme-primary, 50)

然后该颜色可以在实际的 scss 规则中使用。

如何在其他scss文件中使用angular material主题颜色变量

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