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我正在尝试为 Trac 编写插件。我已经成功地将我的请求（process_request）中的变量内容导出到我的模板......但我仍然在以其他方式执行此操作时遇到问题：如何捕获用户录制的信息？

<form name="input" action="" method="POST">
    Configuration : <input type="text" name="configuration" value ="$my_var" /> <br /><br />

    <label for="file">URL:</label>
    <input type="text" name="file" id="WillPosted" value="This text will be changed by the user"/>      

    <input type="submit" name="SubmiT" value="Browse" /><br /><br />

那么如何使用 id="WillPosted" 捕获输入表单的内容？注意：实际问题出在Trac的IRequestHandler方法中！

任何想法 ？谢谢

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1 回答 1

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您在询问常见的 Web-UI 交互

  • my_var --> 带有输入字段'file'和默认值'This will ..'的模板
  • 用户输入到字段
  • 通过 POST 请求提交

如何获得（更改）输入的新值，对吗？如果是这样，你解释得相当复杂。

而且我想知道，如果您不了解trac-hacks.org，它可能是地球上最权威的 Trac 插件代码来源 - 比这里需要的工作示例要多得多。

reg.args无论如何，关键是从dict读取返回值，如下所示：

from pkg_resources  import resource_filename
from trac.web.chrome  import ITemplateProvider, add_stylesheet


implements(IRequestHandler, ITemplateProvider)

# IRequestHandler methods

def match_request(self, req):
    # Any condition evaluating to True will fire the second method.
    return req.path_info == '/<your_path>'

def process_request(self, req):
    "Demo how to interact with your template."

    # Check, if you'r really processing the right request by target matching,
    # and only act on input of authorized users - as an added suggestion/option.
    if req.path_info.startswith('/<your_path>') and req.authname != 'anonymous':
        # Check for request type.
        if req.method == 'POST':
            # Ok, go pock for the new value now.
            value = req.args.get('file', 'default_value')))
            # Now go, process it, store it, even redirect away, if you're done.

            # Fallback for Trac 0.11 compatibility included.
            referer = req.args.get('referer') or req.get_header('Referer')

            # Steer clear of requests going nowhere or loop to self
            if referer is None or \
                    referer.startswith(str(req.abs_href()) + '/<your_path>'):
                referer = req.abs_href()
            req.redirect(referer)

    # Still there, so that's the initial call or anonymous user, hey?
    # So let's prepare information for displaying the template ...
    data = dict(my_var='any_string_or_number')

    # Take the env obj from self, if needed.
    env = self.env
    mod = MyOwnSecondaryModule(env)
    if mod.can_do_something:
        data['my_var'] = mod.do('better')
    # Why not apply an own style?
    add_stylesheet(req, 'your_plugin/most_famous_style.css')

    return 'your_template.html', data

# ITemplateProvider methods

def get_htdocs_dirs(self):
    """Return the absolute path of a directory containing additional
    static resources (such as images, style sheets, etc).
    """
    return [('your_plugin', resource_filename('your_plugin_pkg_base_dir', 'htdocs'))]

def get_templates_dirs(self):
    """Return the absolute path of the directory containing the provided
    Genshi templates.
    """
    return [resource_filename('your_plugin_pkg_base_dir', 'templates')]

关于使用各种 Trac 扩展点接口的问题？另请参阅有关该主题的权威 wiki 文档！

于 2012-09-13T21:54:42.827 回答