我们如何在 Cheetah 中预编译基本模板，以便 #include、#extends 和 #import 在 Weby 中正常工作

Posted 2023-02-24

【中文标题】我们如何在 Cheetah 中预编译基本模板，以便 #include、#extends 和 #import 在 Weby 中正常工作

【英文标题】：How do we precompile base templates in Cheetah so that #include, #extends and #import works properly in Weby

【发布时间】：2010-10-29 12:07:37

【问题描述】：

你们如何在生产中为Cheetah服务？

大家可以分享一下如何在生产环境中预编译和服务 cheetah 的设置

由于我们不在 webpy 中编译模板，因此会出现上游超时错误。如果你能分享一个好的最佳实践，那会有所帮助

*

杰里米写道： 对于生产站点，我使用 Cheetah 使用预编译的模板 - 它是 非常快（模板导入 当 python 时特别快 编译和优化）。一点 imp 模块的魔法需要一个 模板名称和基本目录 （在特定于站点的配置中配置） 并加载该模板，采取 照顾#extends和

适当的导入指令。我不使用内置支持

但是，猎豹。新模板 库也只导入到 显示调试错误页面

*

【参考方案1】：

可能会根据需要自动编译：

import sys
import os
from os import path
import logging
from Cheetah.Template import Template
from Cheetah.Compiler import Compiler

log = logging.getLogger(__name__)

_import_save = __import__
def cheetah_import(name, *args, **kw):
  """Import function which search for Cheetah templates.

  When template ``*.tmpl`` is found in ``sys.path`` matching module
  name (and corresponding generated Python module is outdated or
  not existent) it will be compiled prior to actual import.
  """
  name_parts = name.split('.')
  for p in sys.path:
    basename = path.join(p, *name_parts)
    tmpl_path = basename+'.tmpl'
    py_path = basename+'.py'
    if path.exists(tmpl_path):
      log.debug("%s found in %r", name, tmpl_path)
      if not path.exists(py_path) or newer(tmpl_path, py_path):
        log.info("cheetah compile %r -> %r", tmpl_path, py_path)
        output = Compiler(
            file=tmpl_path,
            moduleName=name,
            mainClassName=name_parts[-1],
            )
        open(py_path, 'wb').write(str(output))
      break
  return _import_save(name, *args, **kw)

def newer(new, old):
    """Whether file with path ``new`` is newer then at ``old``."""
    return os.stat(new).st_mtime > os.stat(old).st_mtime

import __builtin__
__builtin__.__import__ = cheetah_import

【参考方案2】：

这行得通

try:web.render('mafbase.tmpl', None, True, 'mafbase')
except:pass

这就是我对你的代码所做的

from cheetahimport import *
sys.path.append('./templates')
cheetah_import('mafbase')

包括在给定方法中不起作用。

这是我遇到的错误

    localhost pop]$ vi code.py
    [mark@localhost pop]$ ./code.py 9911
    http://0.0.0.0:9911/
    Traceback (most recent call last):
     File "/home/mark/work/common/web/application.py", line 241, in process
     return self.handle()
    File "/home/mark/work/common/web/application.py", line 232, in handle
    return self._delegate(fn, self.fvars, args)
    File "/home/mark/work/common/web/application.py", line 411, in _delegate
    return handle_class(cls)
    File "/home/mark/work/common/web/application.py", line 386, in handle_class
    return tocall(*args)
    File "user.py", line 264, in proxyfunc
    return func(self, *args, **kw)
    File "/home/mark/work/pop/code.py", line 1801, in GET
    return web.render('subclass.html')
    File "/home/mark/work/common/web/cheetah.py", line 104, in render
    return str(compiled_tmpl)
    File "/usr/lib/python2.5/site-packages/Cheetah-2.0.1-py2.5-linux-i686.egg/Cheetah/Template.py", line 982, in __str__
    def __str__(self): return getattr(self, mainMethName)()
    File "templates/mafbase.py", line 713, in respond
    self._handleCheetahInclude("widgetbox.html", trans=trans, includeFrom="file", raw=False)
    File "/usr/lib/python2.5/site-packages/Cheetah-2.0.1-py2.5-linux-i686.egg/Cheetah/Template.py", line 1512, in _handleCheetahInclude
    nestedTemplateClass = compiler.compile(source=source,file=file)
    File "/usr/lib/python2.5/site-packages/Cheetah-2.0.1-py2.5-linux-i686.egg/Cheetah/Template.py", line 693, in compile
     fileHash = str(hash(file))+str(os.path.getmtime(file))
   File "/usr/lib/python2.5/posixpath.py", line 143, in getmtime
    return os.stat(filename).st_mtime
   OSError: [Errno 2] No such file or directory: '/home/mark/work/pop/widgetbox.html'