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import re |
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from math import floor |
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from django import template |
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from itertools import chain |
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from django.template.defaultfilters import stringfilter |
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from collections import namedtuple |
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try: |
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from django.utils.encoding import force_text |
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except ImportError: |
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from django.utils.encoding import force_unicode as force_text |
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register = template.Library() |
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Field = namedtuple('Field', 'name verbose_name') |
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@register.filter |
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@stringfilter |
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def undertospaced(value): |
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return value.replace("_", " ").title() |
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@register.filter |
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def get_value(obj, field): |
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try: |
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return getattr(obj, 'get_%s_display' % field)() |
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except: |
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return getattr(obj, field) |
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@register.filter |
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def get_model_fields(obj): |
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model = obj.__class__ |
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excludes = ['pk'] |
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property_fields = [] |
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for name in dir(model): |
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if name not in excludes and isinstance( |
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getattr(model, name, None), property |
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): |
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property_fields.append(Field(name=name, verbose_name=name)) |
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ret = chain(obj._meta.fields, property_fields) |
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if exclude: |
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return chain(i for i in ret if not i.name in exclude) |
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return ret |
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@register.filter |
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def get_verbose_field_name(instance, field_name): |
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""" |
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Returns verbose_name for a field. |
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""" |
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fields = [field.name for field in instance._meta.fields] |
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if field_name in fields: |
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return instance._meta.get_field(field_name).verbose_name.title() |
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else: |
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return field_name.title() |
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@register.filter(is_safe=True) |
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def label_with_class(value, arg): |
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"""Style adjustments""" |
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return value.label_tag(attrs={'class': arg}) |
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@register.filter(is_safe=True) |
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def input_with_class(value, arg): |
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value.field.widget.attrs['class'] = arg |
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return value |
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@register.filter(is_safe=True) |
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def inline_objects(object, inline_fk): |
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inline_model = inline_fk.model |
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related_filter = {inline_fk.name: object} |
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return inline_model.objects.filter(**related_filter) |
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@register.inclusion_tag('widgets/tables/pagination.html') |
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def bootstrap_pagination(page, **kwargs): |
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pagination_kwargs = kwargs.copy() |
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pagination_kwargs['page'] = page |
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return get_pagination_context(**pagination_kwargs) |
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def get_pagination_context(page, pages_to_show=11, |
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url=None, size=None, extra=None, |
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parameter_name='page'): |
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""" |
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Generate Bootstrap pagination context from a page object |
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""" |
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pages_to_show = int(pages_to_show) |
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if pages_to_show < 1: |
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raise ValueError( |
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"Pagination pages_to_show should be a positive" |
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"integer, you specified {pages}".format( |
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pages=pages_to_show) |
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) |
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num_pages = page.paginator.num_pages |
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current_page = page.number |
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half_page_num = int(floor(pages_to_show / 2)) |
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if half_page_num < 0: |
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half_page_num = 0 |
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first_page = current_page - half_page_num |
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if first_page <= 1: |
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first_page = 1 |
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if first_page > 1: |
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pages_back = first_page - half_page_num |
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if pages_back < 1: |
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pages_back = 1 |
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else: |
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pages_back = None |
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last_page = first_page + pages_to_show - 1 |
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if pages_back is None: |
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last_page += 1 |
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if last_page > num_pages: |
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last_page = num_pages |
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if last_page < num_pages: |
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pages_forward = last_page + half_page_num |
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if pages_forward > num_pages: |
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pages_forward = num_pages |
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else: |
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pages_forward = None |
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if first_page > 1: |
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first_page -= 1 |
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if pages_back is not None and pages_back > 1: |
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pages_back -= 1 |
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else: |
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pages_back = None |
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pages_shown = [] |
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for i in range(first_page, last_page + 1): |
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pages_shown.append(i) |
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# Append proper character to url |
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if url: |
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# Remove existing page GET parameters |
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url = force_text(url) |
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url = re.sub(r'\?{0}\=[^\&]+'.format(parameter_name), '?', url) |
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url = re.sub(r'\&{0}\=[^\&]+'.format(parameter_name), '', url) |
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# Append proper separator |
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if '?' in url: |
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url += '&' |
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else: |
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url += '?' |
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# Append extra string to url |
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if extra: |
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if not url: |
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url = '?' |
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url += force_text(extra) + '&' |
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if url: |
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url = url.replace('?&', '?') |
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# Set CSS classes, see http://getbootstrap.com/components/#pagination |
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pagination_css_classes = ['pagination'] |
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if size == 'small': |
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pagination_css_classes.append('pagination-sm') |
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elif size == 'large': |
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pagination_css_classes.append('pagination-lg') |
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# Build context object |
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return { |
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'bootstrap_pagination_url': url, |
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'num_pages': num_pages, |
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'current_page': current_page, |
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'first_page': first_page, |
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'last_page': last_page, |
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'pages_shown': pages_shown, |
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'pages_back': pages_back, |
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'pages_forward': pages_forward, |
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'pagination_css_classes': ' '.join(pagination_css_classes), |
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'parameter_name': parameter_name, |
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} |
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asifpy /
django-crudbuilder
