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[trac] plugin 'helloworld'

2010-03-24 18:13:52| 分类： scm_trac | 标签： |举报 |字号大中小订阅

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我们来写一个超级简单的 plugin，挖哈哈。

--------------- 目录结构 ----------------
./setup.py
./myplugs/helloworld.py
./myplugs/__init__.py
./myplugs/templates/helloworld.html
--------------- setup.py -----------------
from setuptools import find_packages, setup

setup(
    name='TracHelloWorld', version='1.0',
    packages=find_packages(exclude=['*.tests*']),
    entry_points = """
        [trac.plugins]
        helloworld = myplugs.helloworld
    """,
)
--------- myplugs/helloworld.py --------
import pkg_resources
from trac.core import *
from trac.util.html import html
from trac.web import IRequestHandler
from trac.web.chrome import INavigationContributor, ITemplateProvider

class HelloWorldPlugin(Component):
    implements(INavigationContributor, IRequestHandler, ITemplateProvider)

    # INavigationContributor
    def get_active_navigation_item(self, req):
        return 'helloworld'

    def get_navigation_items(self, req):
        yield('mainnav', 'helloworld', html.A('Hello world', href=req.href.helloworld()))

    # IRequestHandler
    def match_request(self, req):
        return req.path_info == '/helloworld'

    def process_request(self, req):
        return 'helloworld.html', {}, None

    # ITemplateProvider methods
    def get_htdocs_dirs(self):
        return []

    def get_templates_dirs(self):
        return [pkg_resources.resource_filename('myplugs.helloworld', 'templates')]
--- myplugs/templates/helloworld.html ----
<html>
<body>
<h1>Hello World</h1>
</body>
</html>
--------------------------------------------
$ python setup.py develop -md /path/to/projenv/plugins

# 修改 conf/trac.ini
[components]
myplugs.helloworld.HelloWorldPlugin.* = enabled
--------------------------------------------

注意，插件在 trac.ini 中的名字，是 module name + '.' + class name

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