Yeoman generator-如何根據提示的參數更改某些文件的內容

Question

我正在編寫一個生成器，其中將向用戶提示一個參數，我們稱其為option 。 根據其答案，我想更改輸出文件之一：

SomeClass.java

public class SomeClass{

    //if option=x I don't want to include this attribute:
    private String field1;

    //if option=x I want to generate an attribute with the value of the promted attribute
    private String ${info};

如何執行上述評論中所述的操作？

Answer 1

index.js

在這里，在prompting()方法中，您將聲明所有提示以及包含名稱的提示類型。 然后在writing() ，將它們傳遞給模板，這里是MyClass.java

module.exports = class extends Generator {
  prompting() {
    // Have Yeoman greet the user.
    this.log(yosay(
      'Welcome to the remarkable ' + chalk.red('generator-react-starter-kit-relay-container') + ' generator!'
    ));

    const prompts = [{
      type: 'input',
      name: 'info',
      message: 'INFO IN YOUR CLASS'
    }, {
      type: 'confirm',
      name: 'x',
      message: 'YOUR OPTION X'
    }];

    return this.prompt(prompts).then(props => {
      this.props = props;
    });
  }

  writing() {
    this.fs.copyTpl(
      this.templatePath('MyClass.js'),
      this.destinationPath(<YOUR DESTINATION PATH>),
      {
        info: this.props.info,
        x: this.props.x
      }
    );
  } 
};

模板/MyClass.java

public class MyClass{

    <% if (x) { %>
    private String <%= info %>;
    <% } else { %>
    private String field1;
    <% } %>

}

Answer 2

這是我解決的方法：

SomeClass.java：

public class SomeClass{

    <%_ if (option == 'x') { _%>
    private String field1;
    <%_ } _%>

    private String <%= nombre %>;

這是生成器代碼：

module.exports = class extends Generator {
  prompting() {
    // Have Yeoman greet the user.
    this.log(yosay(
      'Welcome to the super-duper ' + chalk.red('generator-mygenerator') + ' generator!'
    ));

    const prompts = [{
      type: 'input',
      name: 'option',
      message: 'Option?',
      default: 'x'
    },
    {
      type: 'input',
      name: 'info',
      message: 'Field name?',
      default: 'field'
    }
    ];

    return this.prompt(prompts).then(props => {
      this.props = props;
    });
  }

  writing() {
    this.fs.copyTpl(
      this.templatePath('SomeClass.java'),
      this.destinationPath('SomeClass.java'), this.props);
  }
}