mirror of
https://gitlab.federez.net/re2o/re2o
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106 lines
3.7 KiB
Python
106 lines
3.7 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Re2o est un logiciel d'administration développé initiallement au Rézo Metz. Il
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# se veut agnostique au réseau considéré, de manière à être installable en
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# quelques clics.
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#
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# Copyright © 2017 Maël Kervella
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""
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Templatetag used to write a URL (specified or current one) and adding
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or inserting specific parameters into the query part without deleting
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the other parameters.
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"""
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from django import template
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register = template.Library()
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@register.simple_tag
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def url_insert_param(url="", **kwargs):
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"""
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Return the URL with some specific parameters inserted into the query
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part. If a URL has already some parameters, those requested will be
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modified if already exisiting or will be added and the other parameters
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will stay unmodified. If parameters with the same name are already in the
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URL and a value is specified for this parameter, it will replace all
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existing parameters.
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**Tag name**::
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url_insert_param
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**Parameters**:
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url (optional)
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The URL to use as a base. The parameters will be added to this URL.
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If not specified, it will only return the query part of the URL
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("?a=foo&b=bar" for example).
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Example : "https://example.com/bar?foo=0&thing=abc"
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other arguments
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Any other key-value argument will be used. The key is considered as
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the name of the parameter to insert/modify and the value is the one
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used.
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Example : q="foo" search="bar" name="johnDoe"
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will return as ?<existing_param>&q=foo&search=bar&name=johnDoe
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**Usage**::
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{% url_insert_param [URL] [param1=val1 [param2=val2 [...]]] %}
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**Example**::
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{% url_insert_param a=0 b="bar" %}
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return "?a=0&b=bar"
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{% url_insert_param "url.net/foo.html" a=0 b="bar" %}
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return "url.net/foo.html?a=0&b=bar"
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{% url_insert_param "url.net/foo.html?c=keep" a=0 b="bar" %}
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return "url.net/foo.html?c=keep&a=0&b=bar"
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{% url_insert_param "url.net/foo.html?a=del" a=0 b="bar" %}
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return "url.net/foo.html?a=0&b=bar"
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{% url_insert_param "url.net/foo.html?a=del&c=keep" a=0 b="bar" %}
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return "url.net/foo.hmtl?a=0&c=keep&b=bar"
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"""
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# Get existing parameters in the url
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params = {}
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if "?" in url:
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url, parameters = url.split("?", maxsplit=1)
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for parameter in parameters.split("&"):
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p_name, p_value = parameter.split("=", maxsplit=1)
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if p_name not in params:
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params[p_name] = []
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params[p_name].append(p_value)
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# Add the request parameters to the list of parameters
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for key, value in kwargs.items():
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params[key] = [value]
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# Write the url
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url += "?"
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for param, value_list in params.items():
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for value in value_list:
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url += str(param) + "=" + str(value) + "&"
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# Remove the last '&' (or '?' if no parameters)
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return url[:-1]
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