Yeoman生成器 - 如何根据提示的参数更改某些文件的内容

Question

我正在写一个生成器，用户将被提示一个参数，我们称之为option。根据其答案，我想更改其中一个输出文件：

some class.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};

我如何进行上述评论中描述的操作？

Answer 1

index.js

在prompting()方法中，您将声明所有提示和包含名称的提示类型。然后在writing()，你将把那些传递给模板，这里是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

这就是我解决它的方式：

some class.Java:

public class SomeClass{

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

    private String <%= nombre %>;

这是生成器代码：

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);
  }
}