如何在ace编辑器中添加我自己的完成器

Question

现在，我正在为数据库后端开发一个基于Web的简单编辑器。我发现ace带有自动完成程序，如果我只需要使用SQL关键字完成操作，该如何添加自己的规则？

Answer 1

首先，如您所述激活enableLiveAutocompletion，还必须确保已将其enableBasicAutocompletion定义并设置为true（请参见下文）。

editor.session.setMode("ace/mode/sql");
editor.setOptions({
    enableBasicAutocompletion: true,
    enableSnippets: true,
    enableLiveAutocompletion: true
});

To add a new completer, do what eemp mentioned on github (here).

let langTools = ace.require('ace/ext/language_tools');

Then use the addCompleter method to add the completions as defined below:

var customCompleter = {
  getCompletions: function(editor, session, pos, prefix, callback) {
       // your code
       /* for example
        * let TODO = ...;
        * callback(null, [{name: TODO, value: TODO, score: 1, meta: TODO}]);
        */
  }

 }
langTools.addCompleter(customCompleter);

You can also go have a look at the following:

Ace docs on Completers.