Added the initial application with the main account list, the pagination, the query, the permission, the localization, the documentation, the test case, and a test demonstration site.
This commit is contained in:
21
src/accounting/utils/__init__.py
Normal file
21
src/accounting/utils/__init__.py
Normal file
@ -0,0 +1,21 @@
|
||||
# The Mia! Accounting Flask Project.
|
||||
# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
|
||||
|
||||
# Copyright (c) 2023 imacat.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
"""The independent utilities.
|
||||
|
||||
This module should not import any other module from the application.
|
||||
|
||||
"""
|
||||
240
src/accounting/utils/pagination.py
Normal file
240
src/accounting/utils/pagination.py
Normal file
@ -0,0 +1,240 @@
|
||||
# The Mia! Accounting Flask Project.
|
||||
# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
|
||||
|
||||
# Copyright (c) 2023 imacat.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
"""The pagination utilities.
|
||||
|
||||
This module should not import any other module from the application.
|
||||
|
||||
"""
|
||||
import typing as t
|
||||
from urllib.parse import urlparse, parse_qsl, urlencode, urlunparse, \
|
||||
ParseResult
|
||||
|
||||
from flask import request
|
||||
|
||||
from accounting.locale import gettext
|
||||
|
||||
|
||||
class PageLink:
|
||||
"""A link in the pagination."""
|
||||
|
||||
def __init__(self, text: str, uri: str | None = None,
|
||||
is_current: bool = False, is_for_mobile: bool = False):
|
||||
"""Constructs the link.
|
||||
|
||||
:param text: The link text.
|
||||
:param uri: The link URI, or None if there is no link.
|
||||
:param is_current: True if the page is the current page, or False
|
||||
otherwise.
|
||||
:param is_for_mobile: True if the page should be shown on small
|
||||
screens, or False otherwise.
|
||||
"""
|
||||
self.text: str = text
|
||||
"""The link text"""
|
||||
self.uri: str | None = uri
|
||||
"""The link URI, or None if there is no link."""
|
||||
self.is_current: bool = is_current
|
||||
"""Whether the link is the current page."""
|
||||
self.is_for_mobile: bool = is_for_mobile
|
||||
"""Whether the link should be shown on mobile screens."""
|
||||
|
||||
|
||||
T = t.TypeVar("T")
|
||||
|
||||
|
||||
class Pagination(t.Generic[T]):
|
||||
"""The pagination utilities"""
|
||||
AVAILABLE_PAGE_SIZES: list[int] = [10, 100, 200]
|
||||
"""The available page sizes."""
|
||||
DEFAULT_PAGE_SIZE: int = 10
|
||||
"""The default page size."""
|
||||
|
||||
def __init__(self, items: list[T], is_reversed: bool = False):
|
||||
"""Constructs the pagination.
|
||||
|
||||
:param items: The items.
|
||||
:param is_reversed: True if the default page is the last page, or False
|
||||
otherwise.
|
||||
"""
|
||||
self.__items: list[T] = items
|
||||
"""All the items."""
|
||||
self.__is_reversed: bool = is_reversed
|
||||
"""Whether the default page is the last page."""
|
||||
self.page_size: int = int(request.args.get("page-size",
|
||||
self.DEFAULT_PAGE_SIZE))
|
||||
"""The number of items in a page."""
|
||||
self.__total_pages: int = 0 if len(items) == 0 \
|
||||
else int((len(items) - 1) / self.page_size) + 1
|
||||
"""The total number of pages."""
|
||||
self.is_needed: bool = self.__total_pages > 1
|
||||
"""Whether there should be pagination."""
|
||||
self.__default_page_no: int = 0
|
||||
"""The default page number."""
|
||||
self.page_no: int = 0
|
||||
"""The current page number."""
|
||||
self.list: list[T] = []
|
||||
"""The items shown in the list"""
|
||||
if self.__total_pages > 0:
|
||||
self.__set_list()
|
||||
self.__current_uri: str = request.full_path if request.query_string \
|
||||
else request.path
|
||||
"""The current URI."""
|
||||
self.__base_uri_params: tuple[list[str], list[tuple[str, str]]] \
|
||||
= self.__get_base_uri_params()
|
||||
"""The base URI parameters."""
|
||||
self.page_links: list[PageLink] = self.__get_page_links()
|
||||
"""The pagination links."""
|
||||
self.page_sizes: list[PageLink] = self.__get_page_sizes()
|
||||
"""The links to switch the number of items in a page."""
|
||||
|
||||
def __set_list(self) -> None:
|
||||
"""Sets the items to show in the list.
|
||||
|
||||
:return: None.
|
||||
"""
|
||||
self.__default_page_no = self.__total_pages if self.__is_reversed \
|
||||
else 1
|
||||
self.page_no = int(request.args.get("page-no",
|
||||
self.__default_page_no))
|
||||
if self.page_no < 1:
|
||||
self.page_no = 1
|
||||
if self.page_no > self.__total_pages:
|
||||
self.page_no = self.__total_pages
|
||||
lower_bound: int = (self.page_no - 1) * self.page_size
|
||||
upper_bound: int = lower_bound + self.page_size
|
||||
if upper_bound > len(self.__items):
|
||||
upper_bound = len(self.__items)
|
||||
self.list = self.__items[lower_bound:upper_bound]
|
||||
|
||||
def __get_base_uri_params(self) -> tuple[list[str], list[tuple[str, str]]]:
|
||||
"""Returns the base URI and its parameters, with the "page-no" and
|
||||
"page-size" parameters removed.
|
||||
|
||||
:return: The URI parts and the cleaned-up query parameters.
|
||||
"""
|
||||
uri_p: ParseResult = urlparse(self.__current_uri)
|
||||
params: list[tuple[str, str]] = parse_qsl(uri_p.query)
|
||||
params = [x for x in params if x[0] not in ["page-no", "page-size"]]
|
||||
parts: list[str] = list(uri_p)
|
||||
return parts, params
|
||||
|
||||
def __get_page_links(self) -> list[PageLink]:
|
||||
"""Returns the page links in the pagination navigation.
|
||||
|
||||
:return: The page links in the pagination navigation.
|
||||
"""
|
||||
if self.__total_pages < 2:
|
||||
return []
|
||||
uri: str | None
|
||||
links: list[PageLink] = []
|
||||
|
||||
# The previous page.
|
||||
uri = None if self.page_no == 1 else self.__uri_page(self.page_no - 1)
|
||||
links.append(PageLink(gettext("Previous"), uri, is_for_mobile=True))
|
||||
|
||||
# The first page.
|
||||
if self.page_no > 1:
|
||||
links.append(PageLink("1", self.__uri_page(1)))
|
||||
|
||||
# The eclipse of the previous pages.
|
||||
if self.page_no - 3 == 2:
|
||||
links.append(PageLink(str(self.page_no - 3),
|
||||
self.__uri_page(self.page_no - 3)))
|
||||
elif self.page_no - 3 > 2:
|
||||
links.append(PageLink("…"))
|
||||
|
||||
# The previous two pages.
|
||||
if self.page_no - 2 > 1:
|
||||
links.append(PageLink(str(self.page_no - 2),
|
||||
self.__uri_page(self.page_no - 2)))
|
||||
if self.page_no - 1 > 1:
|
||||
links.append(PageLink(str(self.page_no - 1),
|
||||
self.__uri_page(self.page_no - 1)))
|
||||
|
||||
# The current page.
|
||||
links.append(PageLink(str(self.page_no), self.__uri_page(self.page_no),
|
||||
is_current=True))
|
||||
|
||||
# The next two pages.
|
||||
if self.page_no + 1 < self.__total_pages:
|
||||
links.append(PageLink(str(self.page_no + 1),
|
||||
self.__uri_page(self.page_no + 1)))
|
||||
if self.page_no + 2 < self.__total_pages:
|
||||
links.append(PageLink(str(self.page_no + 2),
|
||||
self.__uri_page(self.page_no + 2)))
|
||||
|
||||
# The eclipse of the next pages.
|
||||
if self.page_no + 3 == self.__total_pages - 1:
|
||||
links.append(PageLink(str(self.page_no + 3),
|
||||
self.__uri_page(self.page_no + 3)))
|
||||
elif self.page_no + 3 < self.__total_pages - 1:
|
||||
links.append(PageLink("…"))
|
||||
|
||||
# The last page.
|
||||
if self.page_no < self.__total_pages:
|
||||
links.append(PageLink(str(self.__total_pages),
|
||||
self.__uri_page(self.__total_pages)))
|
||||
|
||||
# The next page.
|
||||
uri = None if self.page_no == self.__total_pages \
|
||||
else self.__uri_page(self.page_no + 1)
|
||||
links.append(PageLink(gettext("Next"), uri, is_for_mobile=True))
|
||||
|
||||
return links
|
||||
|
||||
def __uri_page(self, page_no: int) -> str:
|
||||
"""Returns the URI of a page.
|
||||
|
||||
:param page_no: The page number.
|
||||
:return: The URI of the page.
|
||||
"""
|
||||
params: list[tuple[str, str]] = []
|
||||
if page_no != self.__default_page_no:
|
||||
params.append(("page-no", str(page_no)))
|
||||
if self.page_size != self.DEFAULT_PAGE_SIZE:
|
||||
params.append(("page-size", str(self.page_size)))
|
||||
return self.__uri_set_params(params)
|
||||
|
||||
def __get_page_sizes(self) -> list[PageLink]:
|
||||
"""Returns the available page sizes.
|
||||
|
||||
:return: The available page sizes.
|
||||
"""
|
||||
return [PageLink(str(x), self.__uri_size(x),
|
||||
is_current=x == self.page_size)
|
||||
for x in self.AVAILABLE_PAGE_SIZES]
|
||||
|
||||
def __uri_size(self, page_size: int) -> str:
|
||||
"""Returns the URI of a page size.
|
||||
|
||||
:param page_size: The page size.
|
||||
:return: The URI of the page size.
|
||||
"""
|
||||
if page_size == self.page_size:
|
||||
return self.__current_uri
|
||||
return self.__uri_set_params([("page-size", str(page_size))])
|
||||
|
||||
def __uri_set_params(self, params: list[tuple[str, str]]) -> str:
|
||||
"""Returns the URI with the query parameters set.
|
||||
|
||||
:param params: The query parameters.
|
||||
:return: The URI with the query parameters set.
|
||||
"""
|
||||
cur_params: list[tuple[str, str]] = self.__base_uri_params[1].copy()
|
||||
cur_params.extend(params)
|
||||
parts: list[str] = self.__base_uri_params[0].copy()
|
||||
parts[4] = urlencode(cur_params)
|
||||
return urlunparse(parts)
|
||||
100
src/accounting/utils/permission.py
Normal file
100
src/accounting/utils/permission.py
Normal file
@ -0,0 +1,100 @@
|
||||
# The Mia! Accounting Flask Project.
|
||||
# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
|
||||
|
||||
# Copyright (c) 2023 imacat.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
"""The permissions.
|
||||
|
||||
This module should not import any other module from the application.
|
||||
|
||||
"""
|
||||
import typing as t
|
||||
|
||||
from flask import Flask, abort
|
||||
|
||||
|
||||
def has_permission(rule: t.Callable[[], bool]) -> t.Callable:
|
||||
"""The permission decorator to check whether the current user is allowed.
|
||||
|
||||
:param rule: The permission rule.
|
||||
:return: The view decorator.
|
||||
"""
|
||||
|
||||
def decorator(view: t.Callable) -> t.Callable:
|
||||
"""The view decorator to decorate a view with permission tests.
|
||||
|
||||
:param view: The view.
|
||||
:return: The decorated view.
|
||||
"""
|
||||
|
||||
def decorated_view(*args, **kwargs):
|
||||
"""The decorated view that tests against a permission rule.
|
||||
|
||||
:param args: The arguments of the view.
|
||||
:param kwargs: The keyword arguments of the view.
|
||||
:return: The response of the view.
|
||||
:raise Forbidden: When the user is denied.
|
||||
"""
|
||||
if not rule():
|
||||
abort(403)
|
||||
return view(*args, **kwargs)
|
||||
|
||||
return decorated_view
|
||||
|
||||
return decorator
|
||||
|
||||
|
||||
__can_view_func: t.Callable[[], bool] = lambda: True
|
||||
"""The callback that returns whether the current user can view the accounting
|
||||
data."""
|
||||
__can_edit_func: t.Callable[[], bool] = lambda: True
|
||||
"""The callback that returns whether the current user can edit the accounting
|
||||
data."""
|
||||
|
||||
|
||||
def can_view() -> bool:
|
||||
"""Returns whether the current user can view the account data.
|
||||
|
||||
:return: True if the current user can view the accounting data, or False
|
||||
otherwise.
|
||||
"""
|
||||
return __can_view_func()
|
||||
|
||||
|
||||
def can_edit() -> bool:
|
||||
"""Returns whether the current user can edit the account data.
|
||||
|
||||
:return: True if the current user can edit the accounting data, or False
|
||||
otherwise.
|
||||
"""
|
||||
return __can_edit_func()
|
||||
|
||||
|
||||
def init_app(app: Flask, can_view_func: t.Callable[[], bool] | None = None,
|
||||
can_edit_func: t.Callable[[], bool] | None = None) -> None:
|
||||
"""Initializes the application.
|
||||
|
||||
:param app: The Flask application.
|
||||
:param can_view_func: A callback that returns whether the current user can
|
||||
view the accounting data.
|
||||
:param can_edit_func: A callback that returns whether the current user can
|
||||
edit the accounting data.
|
||||
:return: None.
|
||||
"""
|
||||
global __can_view_func, __can_edit_func
|
||||
if can_view_func is not None:
|
||||
__can_view_func = can_view_func
|
||||
if can_edit_func is not None:
|
||||
__can_edit_func = can_edit_func
|
||||
app.jinja_env.globals["can_view_accounting"] = __can_view_func
|
||||
44
src/accounting/utils/query.py
Normal file
44
src/accounting/utils/query.py
Normal file
@ -0,0 +1,44 @@
|
||||
# The Mia! Accounting Flask Project.
|
||||
# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
|
||||
|
||||
# Copyright (c) 2023 imacat.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
"""The query keyword parser.
|
||||
|
||||
This module should not import any other module from the application.
|
||||
|
||||
"""
|
||||
import re
|
||||
|
||||
|
||||
def parse_query_keywords(q: str | None) -> list[str]:
|
||||
"""Returns the query keywords by the query parameter.
|
||||
|
||||
:param q: The query parameter.
|
||||
:return: The query keywords.
|
||||
"""
|
||||
if q is None:
|
||||
return []
|
||||
q = q.strip()
|
||||
if q == "":
|
||||
return []
|
||||
keywords: list[str] = []
|
||||
while q is not None:
|
||||
m: re.Match = re.match(r"(?:\"([^\"]+)\"|(\S+))(?:\s+(.+)|)$", q)
|
||||
if m.group(1) is not None:
|
||||
keywords.append(m.group(1))
|
||||
else:
|
||||
keywords.append(m.group(2))
|
||||
q = m.group(3)
|
||||
return keywords
|
||||
Reference in New Issue
Block a user