diff options
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | README.rst | 40 | ||||
| -rw-r--r-- | debug_toolbar/__init__.py | 0 | ||||
| -rw-r--r-- | debug_toolbar/middleware.py | 32 | ||||
| -rw-r--r-- | debug_toolbar/panels/__init__.py | 14 | ||||
| -rw-r--r-- | debug_toolbar/panels/sql.py | 19 | ||||
| -rw-r--r-- | debug_toolbar/panels/version.py | 15 | ||||
| -rw-r--r-- | debug_toolbar/toolbar/__init__.py | 0 | ||||
| -rw-r--r-- | debug_toolbar/toolbar/loader.py | 73 |
9 files changed, 195 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..2f78cf5 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +*.pyc + diff --git a/README.rst b/README.rst new file mode 100644 index 0000000..f1a0c2c --- /dev/null +++ b/README.rst @@ -0,0 +1,40 @@ +==================== +Django Debug Toolbar +==================== + +The Django Debug Toolbar is a configurable set of panels that display various +debug information about the current request/response. It is a small toolbar +that, when activated, situates itself in the top-right location of the browser +window. When particular panels are clicked, more details about that panel's +content are displayed. + +Currently, the following panels have been written and are working: + +- Django version +- SQL queries including time to execute + +If you have ideas for other panels please let us know. + +Installation +============ + +#. Add the `debug_toolbar` directory to your Python path. + +#. Add the following middleware to your project's `settings.py` file: + + ``'debug_toolbar.middleware.DebugToolbarMiddleware',`` + +#. Add a tuple called `DEBUG_TOOLBAR_PANELS` to your ``settings.py`` file that + specifies the full Python path to the panel that you want included in the + Toolbar. This setting looks very much like the `MIDDLEWARE_CLASSES` setting. + For example:: + + DEBUG_TOOLBAR_PANELS = ( + 'debug_toolbar.panels.version.VersionDebugPanel', + 'debug_toolbar.panels.sql.SQLDebugPanel', + ) + +TODO +==== +- Add more panels +- Get fancy with CSS and Javascript diff --git a/debug_toolbar/__init__.py b/debug_toolbar/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/debug_toolbar/__init__.py diff --git a/debug_toolbar/middleware.py b/debug_toolbar/middleware.py new file mode 100644 index 0000000..b2e9b29 --- /dev/null +++ b/debug_toolbar/middleware.py @@ -0,0 +1,32 @@ +""" +Debug Toolbar middleware +""" +import re +from django.conf import settings +from django.utils.safestring import mark_safe +from debug_toolbar.toolbar.loader import DebugToolbar + +_HTML_TYPES = ('text/html', 'application/xhtml+xml') +_END_HEAD_RE = re.compile(r'</head>', re.IGNORECASE) +_END_BODY_RE = re.compile(r'</body>', re.IGNORECASE) + +class DebugToolbarMiddleware(object): + """ + Middleware to set up Debug Toolbar on incoming request and render toolbar + on outgoing response. + """ + def __init__(self): + self.debug_toolbar = None + + def process_request(self, request): + if settings.DEBUG: + self.debug_toolbar = DebugToolbar() + self.debug_toolbar.load_panels() + return None + + def process_response(self, request, response): + if settings.DEBUG: + if response['Content-Type'].split(';')[0] in _HTML_TYPES: + #response.content = _END_HEAD_RE.sub(mark_safe(self.debug_toolbar.render_styles() + "%s" % match.group()), response.content) + response.content = _END_BODY_RE.sub(mark_safe(self.debug_toolbar.render_toolbar() + '</body>'), response.content) + return response diff --git a/debug_toolbar/panels/__init__.py b/debug_toolbar/panels/__init__.py new file mode 100644 index 0000000..2454c56 --- /dev/null +++ b/debug_toolbar/panels/__init__.py @@ -0,0 +1,14 @@ +"""Base DebugPanel class""" + +class DebugPanel(object): + """ + Base class for debug panels. + """ + def title(self): + raise NotImplementedError + + def url(self): + raise NotImplementedError + + def content(self): + raise NotImplementedError diff --git a/debug_toolbar/panels/sql.py b/debug_toolbar/panels/sql.py new file mode 100644 index 0000000..6c180d7 --- /dev/null +++ b/debug_toolbar/panels/sql.py @@ -0,0 +1,19 @@ +from debug_toolbar.panels import DebugPanel + +class SQLDebugPanel(DebugPanel): + """ + Panel that displays information about the SQL queries run while processing the request. + """ + def title(self): + return 'SQL Queries' + + def url(self): + return '' + + def content(self): + from django.db import connection + query_info = [] + for q in connection.queries: + query_info.append('<dt>%s</dt><dd>%s</dd>' % (q['time'], q['sql'])) + return '<dl>%s</dl>' % (''.join(query_info)) + diff --git a/debug_toolbar/panels/version.py b/debug_toolbar/panels/version.py new file mode 100644 index 0000000..63c44b0 --- /dev/null +++ b/debug_toolbar/panels/version.py @@ -0,0 +1,15 @@ +import django +from debug_toolbar.panels import DebugPanel + +class VersionDebugPanel(DebugPanel): + """ + Panel that displays the Django version. + """ + def title(self): + return 'Version' + + def url(self): + return '' + + def content(self): + return django.get_version() diff --git a/debug_toolbar/toolbar/__init__.py b/debug_toolbar/toolbar/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/debug_toolbar/toolbar/__init__.py diff --git a/debug_toolbar/toolbar/loader.py b/debug_toolbar/toolbar/loader.py new file mode 100644 index 0000000..4c3efa2 --- /dev/null +++ b/debug_toolbar/toolbar/loader.py @@ -0,0 +1,73 @@ +""" +The main DebugToolbar class that loads and renders the Toolbar. +""" +class DebugToolbar(object): + + def __init__(self): + self.panels = [] + self.panel_list = [] + self.content_list = [] + + def load_panels(self): + """ + Populate debug panel lists from settings.DEBUG_TOOLBAR_PANELS. + """ + from django.conf import settings + from django.core import exceptions + + for panel_path in settings.DEBUG_TOOLBAR_PANELS: + try: + dot = panel_path.rindex('.') + except ValueError: + raise exceptions.ImproperlyConfigured, '%s isn\'t a debug panel module' % panel_path + panel_module, panel_classname = panel_path[:dot], panel_path[dot+1:] + try: + mod = __import__(panel_module, {}, {}, ['']) + except ImportError, e: + raise exceptions.ImproperlyConfigured, 'Error importing debug panel %s: "%s"' % (panel_module, e) + try: + panel_class = getattr(mod, panel_classname) + except AttributeError: + raise exceptions.ImproperlyConfigured, 'Toolbar Panel module "%s" does not define a "%s" class' % (panel_module, panel_classname) + + try: + panel_instance = panel_class() + except: + continue # Some problem loading panel + + self.panels.append(panel_instance) + + def render_panels(self): + """ + Renders each panel. + """ + for panel in self.panels: + div_id = 'djDebug%sPanel' % (panel.title().replace(' ', '')) + self.panel_list.append('<li><a title="%(title)s" href="%(url)s">%(title)s</a></li>' % ({ + 'title': panel.title(), + 'url': panel.url() or '#', + })) + self.content_list.append('<div id="%(div_id)s" class="panelContent"><h1>%(title)s</h1>%(content)s</div>' % ({ + 'div_id': div_id, + 'title': panel.title(), + 'content': panel.content(), + })) + + def render_toolbar(self): + """ + Renders the overall Toolbar with panels inside. + """ + self.render_panels() + template = """ + <div id="djDebugToolbar"> + <ul id="djDebugPanelList"> + %(panels)s + </ul> + %(contents)s + </div> + """ + context = { + 'panels': ''.join(self.panel_list), + 'contents': ''.join(self.content_list), + } + return template % context |
