ajax_pattern_view.py
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# -*- coding: utf-8 -*-
from collections import OrderedDict
from django.contrib.auth.models import AnonymousUser
from django.core.urlresolvers import reverse
from django.shortcuts import get_object_or_404
from django.utils import timezone
from django.utils.http import urlencode
from django.utils.translation import ugettext as _
from common.decorators import render, ajax, AjaxError, render_ajax
from common.util import error_messages, format_date, json_encode
from dictionary.ajax_lexeme_view import refresh_derivatives
from dictionary.ajax_slickgrid import SlickGridQuery
from dictionary.models import Pattern, Ending, BaseFormLabel, PatternType, \
editable_qualifiers, readonly_vocabularies, Gender, PatternExample, filter_visible_lips, Lexeme, reader_lexemes, \
reader_patterns
from patterns.models import InflectionType, BaseFormLabel
from dictionary.util import check_query_params
from patterns.forms import PatternEditForm, QualifierForm
COLOR_SCHEMES = dict(InflectionType.objects.values_list('symbol', 'color_scheme'))
class PatternQuery(SlickGridQuery):
model = Pattern
sort_field = 'name'
select_related = ['type__lexical_class']
default_columns = ('name', 'type')
column_data = {
'id': lambda pattern: pattern.id,
'scheme': lambda pattern: COLOR_SCHEMES[pattern.type.lexical_class_id],
'name': lambda pattern: pattern.name,
'type': lambda pattern: pattern.type.symbol,
'lexical_class': lambda pattern: pattern.type.lexical_class_id,
'example':
lambda pattern: pattern.example + u'·' + pattern.basic_form_ending,
}
literal_filter_fields = ['name', 'old_name', 'type']
filter_field_translation = {
'lexical_class': 'type__lexical_class__symbol',
'base_form_label': 'endings__base_form_label__symbol',
}
def __init__(self, *args, **kwargs):
super(PatternQuery, self).__init__(*args, **kwargs)
self.reader = self.query_params['reader']
def get_queryset(self):
patterns = super(PatternQuery, self).get_queryset()
if self.reader:
return reader_patterns(patterns)
return patterns
# Zapytanie o indeks wiersza o pewnym id przy danym sortowaniu
@ajax(login_required=False, method='get')
def row_index(request, id, query_params):
check_query_params(request, query_params)
query = PatternQuery(query_params)
return {'index': query.row_index(id)}
# Zapytanie o id oraz indeks wiersza przy danym sortowaniu
# pierwszego wiersza, którego hasło rozpoczyna się od search.
# 'selected_id' < 0, jeśli takiego nie ma
@ajax(login_required=False, method='get')
def search_index(request, query_params, search=''):
check_query_params(request, query_params)
query = PatternQuery(query_params)
return {'index': query.search_index(search)}
@ajax(login_required=False, method='get')
def get_patterns(request, from_page, to_page, rows, query_params, columns):
check_query_params(request, query_params)
session_prefix = 'reader_' if query_params['reader'] else ''
request.session[session_prefix + 'pattern-sort_rules'] = \
query_params['sort_rules']
request.session[session_prefix + 'pattern-filter'] = query_params['filter']
request.session[session_prefix + 'pattern-columns'] = columns
query = PatternQuery(query_params, columns=columns)
rows, count = query.get_page(from_page, to_page, rows)
return {
'rows': rows,
'count': count,
'page': from_page,
}
@render_ajax(template='pattern_preview.html', login_required=False,
method='get')
def pattern_preview(request, id, reader=False):
try:
pattern = Pattern.all_objects.get(id=id)
except Pattern.DoesNotExist:
raise AjaxError(_(u'Pattern doesn\'t exist'))
if reader:
user = AnonymousUser()
else:
user = request.user
if not request.user.is_authenticated() and not pattern.is_public():
raise AjaxError('access denied')
lips = filter_visible_lips(pattern.lexemeinflectionpattern_set, user)
detailed_counts = []
pattern_filter_rule = {
'field': 'pattern_name',
'op': 'eq',
'data': pattern.name
}
def make_filter_url(rules):
lexeme_url = reverse('reader_view' if reader else 'lexeme_view')
return lexeme_url + '?' + urlencode(
{'filter': json_encode({'group_op': 'AND', 'rules': rules})})
def lexeme_count(q):
return q.values('lexeme').distinct().count()
if pattern.type.lexical_class_id == 'subst':
for gender in Gender.objects.all():
gender_count = lexeme_count(lips.filter(gender=gender))
if gender_count > 0:
example = pattern.get_example(gender)
if example:
example_qs = Lexeme.objects.filter(id=example[0].id)
if not reader_lexemes(example_qs):
example = pattern.get_example(gender, refresh=True)
filter_url = make_filter_url([
pattern_filter_rule,
{
'field': 'gender',
'op': 'in',
'data': [str(gender.id)],
}
])
else:
filter_url = None
detailed_counts.append(
(gender.symbol, gender_count, example, filter_url))
if detailed_counts and detailed_counts[0][2]:
first_root = detailed_counts[0][2][1]
else:
first_root = pattern.example
return {
'pattern': pattern,
'root': first_root,
'lexeme_count': lexeme_count(lips),
'detailed_counts': detailed_counts,
'pattern_filter_url': make_filter_url([pattern_filter_rule]),
}
@render_ajax(template='pattern_edit_form.html', method='get',
permission_required='dictionary.view_pattern')
def pattern_edit_form(request, id):
p = Pattern.all_objects.get(pk=id)
editable = request.user.has_perm('dictionary.change_pattern')
ending_groups = OrderedDict(
(bfl, []) for bfl in p.type.base_form_labels.all())
endings = p.endings.order_by('index')
for e in endings:
ro_qualifers = e.qualifiers.filter(
vocabulary__in=readonly_vocabularies(request.user))
q_form = QualifierForm(
qualified=e, user=request.user, editable=editable,
prefix='end%s' % e.pk)
assert e.base_form_label in ending_groups
ending_groups[e.base_form_label].append((e, ro_qualifers, q_form))
# examples = p.patternexample_set.all()
return {
'pattern': p,
'form': PatternEditForm(instance=p, editable=editable),
'editable': editable,
'ending_groups': ending_groups,
}
# mogłoby iść przez js_vars...
@render('ending_row.html')
@ajax(method='get', encode_result=False)
def new_ending_row(request, pattern_id):
p = Pattern.all_objects.get(id=pattern_id)
ending = {'string': '', 'id': 'add-NUM'}
form = QualifierForm(user=request.user, prefix='add-NUM')
return {'ending': ending, 'editable': True, 'form': form, 'pattern': p}
@render_ajax(template='ending_table_row.html', method='get')
def new_ending_table_row(request, bfl_id):
return {
'base_form_label': BaseFormLabel.objects.get(id=bfl_id),
'ending_groups': [],
'editable': True,
}
@ajax(method='post', permission_required='dictionary.change_pattern')
def update_pattern(request, form_data):
form_dict = dict((x['name'], x['value']) for x in form_data)
p = Pattern.all_objects.get(pk=form_dict['id'])
lc = p.type.lexical_class
form = PatternEditForm(data=form_dict, instance=p)
endings_changed = False
if form.is_valid():
form.save()
p.deleted = False
p.save()
for ending_pk in form_dict['deleted']:
Ending.objects.get(pk=int(ending_pk)).delete()
endings_changed = True
qualifiers = editable_qualifiers(request.user)
for bfl_endings in form_dict['ending_list']:
endings_data = bfl_endings['endings']
bfl = BaseFormLabel.objects.get(
symbol=bfl_endings['base_form_label'], lexical_class=lc)
for index, ending_data in enumerate(endings_data, 1):
quals = set(int(q) for q in ending_data['qualifiers'])
if ending_data['id'] == 'add':
ending = Ending.objects.create(
pattern=p, base_form_label=bfl,
string=ending_data['string'],
index=index)
endings_changed = True
else:
ending = Ending.objects.get(pk=int(ending_data['id']))
if ending.index != index \
or ending.string != ending_data['string']:
ending.index = index
ending.string = ending_data['string']
ending.save()
endings_changed = True
for qualifier in qualifiers:
changed = qualifier.set_for(ending, qualifier.pk in quals)
if changed:
endings_changed = True
for example_id, example_entry in form_dict['example_list']:
example = PatternExample.objects.get(id=example_id)
if example.lexeme.entry != example_entry:
lexemes = reader_lexemes(Lexeme.objects.distinct().filter(
patterns=p, entry=example_entry))
if len(lexemes) == 0:
raise AjaxError(
_(u'No matching lexeme: %s') % example_entry)
if len(lexemes) > 1:
raise AjaxError(
_(u'%s has homonyms, choose a less ambiguous example') %
example_entry)
example.lexeme = lexemes.get()
example.save()
if endings_changed:
lexemes = p.lexeme_set.all()
if len(lexemes) <= 100:
for l in lexemes:
l.refresh_data()
if p.type.lexical_class.symbol == 'v':
for l in p.lexeme_set.all():
refresh_derivatives(l, request)
else:
raise AjaxError(error_messages(form))
return {}
@ajax(method='post', permission_required='dictionary.change_pattern')
def create_pattern(request):
new_name = u'nowy wzór %s'
i = 1
while Pattern.all_objects.filter(name=new_name % i).exists():
i += 1
pt = PatternType.objects.get(lexical_class_id='subst', symbol='m')
p = Pattern.objects.create(
name=new_name % i, type=pt, example='...', status=Pattern.STATUS_NEW,
deleted=True)
return {'id': p.id}
@ajax(method='get', login_required=False)
def get_name(request, pattern_id):
pattern = get_object_or_404(Pattern, id=pattern_id)
return {'name': pattern.name}
@ajax(method='post', permission_required='dictionary.change_pattern')
def clone_pattern(request, pattern_id):
try:
pattern = Pattern.objects.get(id=pattern_id)
except Pattern.DoesNotExist:
raise AjaxError(_(u'Cannot clone a pattern before it is created.'))
comment = u'Wzór sklonowany %s' % (format_date(timezone.now()))
i = 1
while Pattern.all_objects.filter(name='%s-%s' % (pattern.name, i)).exists():
i += 1
new_name = '%s-%s' % (pattern.name, i)
new_pattern = Pattern.objects.create(
name=new_name, type=pattern.type, example=pattern.example,
basic_form_ending=pattern.basic_form_ending, status=Pattern.STATUS_NEW,
comment=comment, deleted=False)
for ending in pattern.endings.all():
new_ending = Ending.objects.create(
pattern=new_pattern, index=ending.index,
base_form_label=ending.base_form_label, string=ending.string)
new_ending.qualifiers = ending.qualifiers.all()
return {'new_id': new_pattern.id}