7dbd17a5aa
Former-commit-id:133dc97f67[formerlya02aeb236c] [formerly9f19e3f712] [formerly133dc97f67[formerlya02aeb236c] [formerly9f19e3f712] [formerly06a8b51d6d[formerly9f19e3f712[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f]]]] Former-commit-id:06a8b51d6dFormer-commit-id:9bb8decbcf[formerly8e80217e59] [formerly377dcd10b9[formerly3360eb6c5f]] Former-commit-id:377dcd10b9Former-commit-id:e2ecdcfe33
72 lines
2.4 KiB
Python
Executable file
72 lines
2.4 KiB
Python
Executable file
from os import path
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from urlparse import urlparse
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from random import sample, randrange
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from jinja2 import Environment, FileSystemLoader
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from werkzeug import Response, Local, LocalManager, cached_property
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from werkzeug.routing import Map, Rule
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from sqlalchemy import MetaData
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from sqlalchemy.orm import create_session, scoped_session
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TEMPLATE_PATH = path.join(path.dirname(__file__), 'templates')
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STATIC_PATH = path.join(path.dirname(__file__), 'static')
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ALLOWED_SCHEMES = frozenset(['http', 'https', 'ftp', 'ftps'])
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URL_CHARS = 'abcdefghijkmpqrstuvwxyzABCDEFGHIJKLMNPQRST23456789'
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local = Local()
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local_manager = LocalManager([local])
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application = local('application')
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metadata = MetaData()
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url_map = Map([Rule('/static/<file>', endpoint='static', build_only=True)])
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session = scoped_session(lambda: create_session(application.database_engine,
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autocommit=False,
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autoflush=False))
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jinja_env = Environment(loader=FileSystemLoader(TEMPLATE_PATH))
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def expose(rule, **kw):
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def decorate(f):
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kw['endpoint'] = f.__name__
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url_map.add(Rule(rule, **kw))
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return f
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return decorate
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def url_for(endpoint, _external=False, **values):
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return local.url_adapter.build(endpoint, values, force_external=_external)
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jinja_env.globals['url_for'] = url_for
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def render_template(template, **context):
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return Response(jinja_env.get_template(template).render(**context),
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mimetype='text/html')
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def validate_url(url):
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return urlparse(url)[0] in ALLOWED_SCHEMES
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def get_random_uid():
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return ''.join(sample(URL_CHARS, randrange(3, 9)))
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class Pagination(object):
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def __init__(self, query, per_page, page, endpoint):
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self.query = query
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self.per_page = per_page
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self.page = page
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self.endpoint = endpoint
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@cached_property
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def count(self):
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return self.query.count()
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@cached_property
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def entries(self):
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return self.query.offset((self.page - 1) * self.per_page) \
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.limit(self.per_page).all()
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has_previous = property(lambda x: x.page > 1)
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has_next = property(lambda x: x.page < x.pages)
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previous = property(lambda x: url_for(x.endpoint, page=x.page - 1))
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next = property(lambda x: url_for(x.endpoint, page=x.page + 1))
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pages = property(lambda x: max(0, x.count - 1) // x.per_page + 1)
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