root / snf-astakos-app / astakos / im / views / util.py @ c1f65a1e
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1 | 9fb7a900 | Giorgos Korfiatis | # Copyright 2011, 2012, 2013 GRNET S.A. All rights reserved.
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2 | 70e11eaa | Sofia Papagiannaki | #
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3 | 70e11eaa | Sofia Papagiannaki | # Redistribution and use in source and binary forms, with or
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4 | 70e11eaa | Sofia Papagiannaki | # without modification, are permitted provided that the following
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5 | 70e11eaa | Sofia Papagiannaki | # conditions are met:
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6 | 70e11eaa | Sofia Papagiannaki | #
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7 | 70e11eaa | Sofia Papagiannaki | # 1. Redistributions of source code must retain the above
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8 | 70e11eaa | Sofia Papagiannaki | # copyright notice, this list of conditions and the following
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9 | 70e11eaa | Sofia Papagiannaki | # disclaimer.
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10 | 70e11eaa | Sofia Papagiannaki | #
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11 | 70e11eaa | Sofia Papagiannaki | # 2. Redistributions in binary form must reproduce the above
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12 | 70e11eaa | Sofia Papagiannaki | # copyright notice, this list of conditions and the following
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13 | 70e11eaa | Sofia Papagiannaki | # disclaimer in the documentation and/or other materials
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14 | 70e11eaa | Sofia Papagiannaki | # provided with the distribution.
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15 | 70e11eaa | Sofia Papagiannaki | #
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16 | 70e11eaa | Sofia Papagiannaki | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 70e11eaa | Sofia Papagiannaki | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 70e11eaa | Sofia Papagiannaki | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 70e11eaa | Sofia Papagiannaki | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 70e11eaa | Sofia Papagiannaki | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 70e11eaa | Sofia Papagiannaki | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 70e11eaa | Sofia Papagiannaki | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 70e11eaa | Sofia Papagiannaki | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 70e11eaa | Sofia Papagiannaki | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 70e11eaa | Sofia Papagiannaki | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 70e11eaa | Sofia Papagiannaki | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 70e11eaa | Sofia Papagiannaki | # POSSIBILITY OF SUCH DAMAGE.
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28 | 70e11eaa | Sofia Papagiannaki | #
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29 | 70e11eaa | Sofia Papagiannaki | # The views and conclusions contained in the software and
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30 | 70e11eaa | Sofia Papagiannaki | # documentation are those of the authors and should not be
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31 | 70e11eaa | Sofia Papagiannaki | # interpreted as representing official policies, either expressed
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32 | 70e11eaa | Sofia Papagiannaki | # or implied, of GRNET S.A.
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33 | 70e11eaa | Sofia Papagiannaki | |
34 | 70e11eaa | Sofia Papagiannaki | from django.contrib import messages |
35 | 70e11eaa | Sofia Papagiannaki | from django.contrib.auth.views import redirect_to_login |
36 | 70e11eaa | Sofia Papagiannaki | from django.core.xheaders import populate_xheaders |
37 | 70e11eaa | Sofia Papagiannaki | from django.http import HttpResponse |
38 | 70e11eaa | Sofia Papagiannaki | from django.shortcuts import redirect |
39 | 70e11eaa | Sofia Papagiannaki | from django.template import RequestContext, loader as template_loader |
40 | 70e11eaa | Sofia Papagiannaki | from django.utils.translation import ugettext as _ |
41 | 70e11eaa | Sofia Papagiannaki | from django.views.generic.create_update import apply_extra_context, \ |
42 | 70e11eaa | Sofia Papagiannaki | get_model_and_form_class, lookup_object |
43 | 70e11eaa | Sofia Papagiannaki | |
44 | 70e11eaa | Sofia Papagiannaki | from synnefo.lib.ordereddict import OrderedDict |
45 | 70e11eaa | Sofia Papagiannaki | |
46 | 70e11eaa | Sofia Papagiannaki | from astakos.im import presentation |
47 | 70e11eaa | Sofia Papagiannaki | from astakos.im.util import model_to_dict |
48 | 70e11eaa | Sofia Papagiannaki | from astakos.im.models import Resource |
49 | 9fb7a900 | Giorgos Korfiatis | import astakos.im.messages as astakos_messages |
50 | 9fb7a900 | Giorgos Korfiatis | import logging |
51 | 9fb7a900 | Giorgos Korfiatis | |
52 | 9fb7a900 | Giorgos Korfiatis | logger = logging.getLogger(__name__) |
53 | 9fb7a900 | Giorgos Korfiatis | |
54 | 9fb7a900 | Giorgos Korfiatis | |
55 | 9fb7a900 | Giorgos Korfiatis | class ExceptionHandler(object): |
56 | 9fb7a900 | Giorgos Korfiatis | def __init__(self, request): |
57 | 9fb7a900 | Giorgos Korfiatis | self.request = request
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58 | 9fb7a900 | Giorgos Korfiatis | |
59 | 9fb7a900 | Giorgos Korfiatis | def __enter__(self): |
60 | 9fb7a900 | Giorgos Korfiatis | pass
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61 | 9fb7a900 | Giorgos Korfiatis | |
62 | 9fb7a900 | Giorgos Korfiatis | def __exit__(self, exc_type, value, traceback): |
63 | 9fb7a900 | Giorgos Korfiatis | if value is not None: # exception |
64 | 9fb7a900 | Giorgos Korfiatis | logger.exception(value) |
65 | 9fb7a900 | Giorgos Korfiatis | m = _(astakos_messages.GENERIC_ERROR) |
66 | 9fb7a900 | Giorgos Korfiatis | messages.error(self.request, m)
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67 | 9fb7a900 | Giorgos Korfiatis | return True # suppress exception |
68 | 9fb7a900 | Giorgos Korfiatis | |
69 | 70e11eaa | Sofia Papagiannaki | |
70 | 8fb8d0cf | Giorgos Korfiatis | def render_response(template, tab=None, status=200, context_instance=None, |
71 | 8fb8d0cf | Giorgos Korfiatis | **kwargs): |
72 | 70e11eaa | Sofia Papagiannaki | """
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73 | 8fb8d0cf | Giorgos Korfiatis | Calls ``django.template.loader.render_to_string`` with an additional
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74 | 8fb8d0cf | Giorgos Korfiatis | ``tab`` keyword argument and returns an ``django.http.HttpResponse``
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75 | 8fb8d0cf | Giorgos Korfiatis | with the specified ``status``.
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76 | 70e11eaa | Sofia Papagiannaki | """
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77 | 70e11eaa | Sofia Papagiannaki | if tab is None: |
78 | 70e11eaa | Sofia Papagiannaki | tab = template.partition('_')[0].partition('.html')[0] |
79 | 70e11eaa | Sofia Papagiannaki | kwargs.setdefault('tab', tab)
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80 | 70e11eaa | Sofia Papagiannaki | html = template_loader.render_to_string( |
81 | 70e11eaa | Sofia Papagiannaki | template, kwargs, context_instance=context_instance) |
82 | 70e11eaa | Sofia Papagiannaki | response = HttpResponse(html, status=status) |
83 | 70e11eaa | Sofia Papagiannaki | return response
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84 | 70e11eaa | Sofia Papagiannaki | |
85 | 8fb8d0cf | Giorgos Korfiatis | |
86 | 70e11eaa | Sofia Papagiannaki | def _create_object(request, model=None, template_name=None, |
87 | 8fb8d0cf | Giorgos Korfiatis | template_loader=template_loader, extra_context=None,
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88 | 8fb8d0cf | Giorgos Korfiatis | post_save_redirect=None, login_required=False, |
89 | 8fb8d0cf | Giorgos Korfiatis | context_processors=None, form_class=None, msg=None): |
90 | 70e11eaa | Sofia Papagiannaki | """
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91 | 70e11eaa | Sofia Papagiannaki | Based of django.views.generic.create_update.create_object which displays a
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92 | 70e11eaa | Sofia Papagiannaki | summary page before creating the object.
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93 | 70e11eaa | Sofia Papagiannaki | """
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94 | 70e11eaa | Sofia Papagiannaki | |
95 | 8fb8d0cf | Giorgos Korfiatis | if extra_context is None: |
96 | 8fb8d0cf | Giorgos Korfiatis | extra_context = {} |
97 | 70e11eaa | Sofia Papagiannaki | if login_required and not request.user.is_authenticated(): |
98 | 70e11eaa | Sofia Papagiannaki | return redirect_to_login(request.path)
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99 | 9024ed2e | Giorgos Korfiatis | |
100 | 9024ed2e | Giorgos Korfiatis | model, form_class = get_model_and_form_class(model, form_class) |
101 | 9024ed2e | Giorgos Korfiatis | extra_context['edit'] = 0 |
102 | 9024ed2e | Giorgos Korfiatis | if request.method == 'POST': |
103 | 9024ed2e | Giorgos Korfiatis | form = form_class(request.POST, request.FILES) |
104 | 9024ed2e | Giorgos Korfiatis | if form.is_valid():
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105 | 9024ed2e | Giorgos Korfiatis | verify = request.GET.get('verify')
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106 | 9024ed2e | Giorgos Korfiatis | edit = request.GET.get('edit')
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107 | 9024ed2e | Giorgos Korfiatis | if verify == '1': |
108 | 9024ed2e | Giorgos Korfiatis | extra_context['show_form'] = False |
109 | 9024ed2e | Giorgos Korfiatis | extra_context['form_data'] = form.cleaned_data
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110 | 9024ed2e | Giorgos Korfiatis | elif edit == '1': |
111 | 9024ed2e | Giorgos Korfiatis | extra_context['show_form'] = True |
112 | 9024ed2e | Giorgos Korfiatis | else:
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113 | 9024ed2e | Giorgos Korfiatis | new_object = form.save() |
114 | 9024ed2e | Giorgos Korfiatis | if not msg: |
115 | 9024ed2e | Giorgos Korfiatis | msg = _( |
116 | 9024ed2e | Giorgos Korfiatis | "The %(verbose_name)s was created successfully.")
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117 | 9024ed2e | Giorgos Korfiatis | msg = msg % model._meta.__dict__ |
118 | 9024ed2e | Giorgos Korfiatis | messages.success(request, msg, fail_silently=True)
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119 | 9024ed2e | Giorgos Korfiatis | return redirect(post_save_redirect, new_object)
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120 | 70e11eaa | Sofia Papagiannaki | else:
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121 | 9024ed2e | Giorgos Korfiatis | form = form_class() |
122 | 9024ed2e | Giorgos Korfiatis | |
123 | 9024ed2e | Giorgos Korfiatis | # Create the template, context, response
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124 | 9024ed2e | Giorgos Korfiatis | if not template_name: |
125 | 9024ed2e | Giorgos Korfiatis | template_name = "%s/%s_form.html" % \
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126 | 9024ed2e | Giorgos Korfiatis | (model._meta.app_label, model._meta.object_name.lower()) |
127 | 9024ed2e | Giorgos Korfiatis | t = template_loader.get_template(template_name) |
128 | 9024ed2e | Giorgos Korfiatis | c = RequestContext(request, { |
129 | 9024ed2e | Giorgos Korfiatis | 'form': form
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130 | 9024ed2e | Giorgos Korfiatis | }, context_processors) |
131 | 9024ed2e | Giorgos Korfiatis | apply_extra_context(extra_context, c) |
132 | 9024ed2e | Giorgos Korfiatis | return HttpResponse(t.render(c))
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133 | 9024ed2e | Giorgos Korfiatis | |
134 | 9024ed2e | Giorgos Korfiatis | |
135 | 70e11eaa | Sofia Papagiannaki | def _update_object(request, model=None, object_id=None, slug=None, |
136 | 8fb8d0cf | Giorgos Korfiatis | slug_field='slug', template_name=None, |
137 | 8fb8d0cf | Giorgos Korfiatis | template_loader=template_loader, extra_context=None,
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138 | 8fb8d0cf | Giorgos Korfiatis | post_save_redirect=None, login_required=False, |
139 | 8fb8d0cf | Giorgos Korfiatis | context_processors=None, template_object_name='object', |
140 | 8fb8d0cf | Giorgos Korfiatis | form_class=None, msg=None): |
141 | 70e11eaa | Sofia Papagiannaki | """
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142 | 70e11eaa | Sofia Papagiannaki | Based of django.views.generic.create_update.update_object which displays a
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143 | 70e11eaa | Sofia Papagiannaki | summary page before updating the object.
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144 | 70e11eaa | Sofia Papagiannaki | """
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145 | 70e11eaa | Sofia Papagiannaki | |
146 | 8fb8d0cf | Giorgos Korfiatis | if extra_context is None: |
147 | 8fb8d0cf | Giorgos Korfiatis | extra_context = {} |
148 | 70e11eaa | Sofia Papagiannaki | if login_required and not request.user.is_authenticated(): |
149 | 70e11eaa | Sofia Papagiannaki | return redirect_to_login(request.path)
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150 | 70e11eaa | Sofia Papagiannaki | |
151 | 9024ed2e | Giorgos Korfiatis | model, form_class = get_model_and_form_class(model, form_class) |
152 | 9024ed2e | Giorgos Korfiatis | obj = lookup_object(model, object_id, slug, slug_field) |
153 | 9024ed2e | Giorgos Korfiatis | |
154 | 9024ed2e | Giorgos Korfiatis | if request.method == 'POST': |
155 | 9024ed2e | Giorgos Korfiatis | form = form_class(request.POST, request.FILES, instance=obj) |
156 | 9024ed2e | Giorgos Korfiatis | if form.is_valid():
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157 | 9024ed2e | Giorgos Korfiatis | verify = request.GET.get('verify')
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158 | 9024ed2e | Giorgos Korfiatis | edit = request.GET.get('edit')
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159 | 9024ed2e | Giorgos Korfiatis | if verify == '1': |
160 | 9024ed2e | Giorgos Korfiatis | extra_context['show_form'] = False |
161 | 9024ed2e | Giorgos Korfiatis | extra_context['form_data'] = form.cleaned_data
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162 | 9024ed2e | Giorgos Korfiatis | elif edit == '1': |
163 | 9024ed2e | Giorgos Korfiatis | extra_context['show_form'] = True |
164 | 9024ed2e | Giorgos Korfiatis | else:
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165 | 9024ed2e | Giorgos Korfiatis | obj = form.save() |
166 | 9024ed2e | Giorgos Korfiatis | if not msg: |
167 | 9024ed2e | Giorgos Korfiatis | msg = _( |
168 | 9024ed2e | Giorgos Korfiatis | "The %(verbose_name)s was created successfully.")
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169 | 9024ed2e | Giorgos Korfiatis | msg = msg % model._meta.__dict__ |
170 | 9024ed2e | Giorgos Korfiatis | messages.success(request, msg, fail_silently=True)
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171 | 9024ed2e | Giorgos Korfiatis | return redirect(post_save_redirect, obj)
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172 | 70e11eaa | Sofia Papagiannaki | else:
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173 | 9024ed2e | Giorgos Korfiatis | form = form_class(instance=obj) |
174 | 9024ed2e | Giorgos Korfiatis | |
175 | 9024ed2e | Giorgos Korfiatis | if not template_name: |
176 | 9024ed2e | Giorgos Korfiatis | template_name = "%s/%s_form.html" % \
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177 | 9024ed2e | Giorgos Korfiatis | (model._meta.app_label, model._meta.object_name.lower()) |
178 | 9024ed2e | Giorgos Korfiatis | t = template_loader.get_template(template_name) |
179 | 9024ed2e | Giorgos Korfiatis | c = RequestContext(request, { |
180 | 9024ed2e | Giorgos Korfiatis | 'form': form,
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181 | 9024ed2e | Giorgos Korfiatis | template_object_name: obj, |
182 | 9024ed2e | Giorgos Korfiatis | }, context_processors) |
183 | 9024ed2e | Giorgos Korfiatis | apply_extra_context(extra_context, c) |
184 | 9024ed2e | Giorgos Korfiatis | response = HttpResponse(t.render(c)) |
185 | 9024ed2e | Giorgos Korfiatis | populate_xheaders(request, response, model, |
186 | 9024ed2e | Giorgos Korfiatis | getattr(obj, obj._meta.pk.attname))
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187 | 9024ed2e | Giorgos Korfiatis | return response
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188 | 70e11eaa | Sofia Papagiannaki | |
189 | 8fb8d0cf | Giorgos Korfiatis | |
190 | 70e11eaa | Sofia Papagiannaki | def _resources_catalog(for_project=False, for_usage=False): |
191 | 70e11eaa | Sofia Papagiannaki | """
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192 | 70e11eaa | Sofia Papagiannaki | `resource_catalog` contains a list of tuples. Each tuple contains the group
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193 | 70e11eaa | Sofia Papagiannaki | key the resource is assigned to and resources list of dicts that contain
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194 | 70e11eaa | Sofia Papagiannaki | resource information.
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195 | 70e11eaa | Sofia Papagiannaki | `resource_groups` contains information about the groups
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196 | 70e11eaa | Sofia Papagiannaki | """
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197 | 70e11eaa | Sofia Papagiannaki | # presentation data
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198 | 70e11eaa | Sofia Papagiannaki | resources_meta = presentation.RESOURCES |
199 | 70e11eaa | Sofia Papagiannaki | resource_groups = resources_meta.get('groups', {})
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200 | 70e11eaa | Sofia Papagiannaki | resource_catalog = () |
201 | 70e11eaa | Sofia Papagiannaki | resource_keys = [] |
202 | 70e11eaa | Sofia Papagiannaki | |
203 | 70e11eaa | Sofia Papagiannaki | # resources in database
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204 | 70e11eaa | Sofia Papagiannaki | resource_details = map(lambda obj: model_to_dict(obj, exclude=[]), |
205 | 70e11eaa | Sofia Papagiannaki | Resource.objects.all()) |
206 | 70e11eaa | Sofia Papagiannaki | # initialize resource_catalog to contain all group/resource information
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207 | 70e11eaa | Sofia Papagiannaki | for r in resource_details: |
208 | 70e11eaa | Sofia Papagiannaki | if not r.get('group') in resource_groups: |
209 | 70e11eaa | Sofia Papagiannaki | resource_groups[r.get('group')] = {'icon': 'unknown'} |
210 | 70e11eaa | Sofia Papagiannaki | |
211 | 70e11eaa | Sofia Papagiannaki | resource_keys = [r.get('str_repr') for r in resource_details] |
212 | 70e11eaa | Sofia Papagiannaki | resource_catalog = [[g, filter(lambda r: r.get('group', '') == g, |
213 | 70e11eaa | Sofia Papagiannaki | resource_details)] for g in resource_groups] |
214 | 70e11eaa | Sofia Papagiannaki | |
215 | 70e11eaa | Sofia Papagiannaki | # order groups, also include unknown groups
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216 | 70e11eaa | Sofia Papagiannaki | groups_order = resources_meta.get('groups_order')
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217 | 70e11eaa | Sofia Papagiannaki | for g in resource_groups.keys(): |
218 | 70e11eaa | Sofia Papagiannaki | if not g in groups_order: |
219 | 70e11eaa | Sofia Papagiannaki | groups_order.append(g) |
220 | 70e11eaa | Sofia Papagiannaki | |
221 | 70e11eaa | Sofia Papagiannaki | # order resources, also include unknown resources
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222 | 70e11eaa | Sofia Papagiannaki | resources_order = resources_meta.get('resources_order')
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223 | 70e11eaa | Sofia Papagiannaki | for r in resource_keys: |
224 | 70e11eaa | Sofia Papagiannaki | if not r in resources_order: |
225 | 70e11eaa | Sofia Papagiannaki | resources_order.append(r) |
226 | 70e11eaa | Sofia Papagiannaki | |
227 | 70e11eaa | Sofia Papagiannaki | # sort catalog groups
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228 | 70e11eaa | Sofia Papagiannaki | resource_catalog = sorted(resource_catalog,
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229 | 70e11eaa | Sofia Papagiannaki | key=lambda g: groups_order.index(g[0])) |
230 | 70e11eaa | Sofia Papagiannaki | |
231 | 70e11eaa | Sofia Papagiannaki | # sort groups
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232 | 70e11eaa | Sofia Papagiannaki | def groupindex(g): |
233 | 70e11eaa | Sofia Papagiannaki | return groups_order.index(g[0]) |
234 | 70e11eaa | Sofia Papagiannaki | resource_groups_list = sorted([(k, v) for k, v in resource_groups.items()], |
235 | 70e11eaa | Sofia Papagiannaki | key=groupindex) |
236 | 70e11eaa | Sofia Papagiannaki | resource_groups = OrderedDict(resource_groups_list) |
237 | 70e11eaa | Sofia Papagiannaki | |
238 | 70e11eaa | Sofia Papagiannaki | # sort resources
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239 | 70e11eaa | Sofia Papagiannaki | def resourceindex(r): |
240 | 70e11eaa | Sofia Papagiannaki | return resources_order.index(r['str_repr']) |
241 | 70e11eaa | Sofia Papagiannaki | |
242 | 70e11eaa | Sofia Papagiannaki | for index, group in enumerate(resource_catalog): |
243 | 70e11eaa | Sofia Papagiannaki | resource_catalog[index][1] = sorted(resource_catalog[index][1], |
244 | 70e11eaa | Sofia Papagiannaki | key=resourceindex) |
245 | 70e11eaa | Sofia Papagiannaki | if len(resource_catalog[index][1]) == 0: |
246 | 70e11eaa | Sofia Papagiannaki | resource_catalog.pop(index) |
247 | 70e11eaa | Sofia Papagiannaki | for gindex, g in enumerate(resource_groups): |
248 | 70e11eaa | Sofia Papagiannaki | if g[0] == group[0]: |
249 | 70e11eaa | Sofia Papagiannaki | resource_groups.pop(gindex) |
250 | 70e11eaa | Sofia Papagiannaki | |
251 | 70e11eaa | Sofia Papagiannaki | # filter out resources which user cannot request in a project application
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252 | 70e11eaa | Sofia Papagiannaki | exclude = resources_meta.get('exclude_from_usage', [])
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253 | 70e11eaa | Sofia Papagiannaki | for group_index, group_resources in enumerate(list(resource_catalog)): |
254 | 70e11eaa | Sofia Papagiannaki | group, resources = group_resources |
255 | 70e11eaa | Sofia Papagiannaki | for index, resource in list(enumerate(resources)): |
256 | 70e11eaa | Sofia Papagiannaki | if for_project and not resource.get('allow_in_projects'): |
257 | 70e11eaa | Sofia Papagiannaki | resources.remove(resource) |
258 | 70e11eaa | Sofia Papagiannaki | if resource.get('str_repr') in exclude and for_usage: |
259 | 70e11eaa | Sofia Papagiannaki | resources.remove(resource) |
260 | 70e11eaa | Sofia Papagiannaki | |
261 | 70e11eaa | Sofia Papagiannaki | # cleanup empty groups
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262 | 70e11eaa | Sofia Papagiannaki | for group_index, group_resources in enumerate(list(resource_catalog)): |
263 | 70e11eaa | Sofia Papagiannaki | group, resources = group_resources |
264 | 70e11eaa | Sofia Papagiannaki | if len(resources) == 0: |
265 | 70e11eaa | Sofia Papagiannaki | resource_catalog.pop(group_index) |
266 | 70e11eaa | Sofia Papagiannaki | resource_groups.pop(group) |
267 | 70e11eaa | Sofia Papagiannaki | |
268 | 70e11eaa | Sofia Papagiannaki | return resource_catalog, resource_groups |