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improve globalized search queries: normalize input, fallbacks, etc

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This commit is contained in:
Emi Matchu 2013-01-26 09:52:58 -06:00
parent 2798ebbd5c
commit e86bcfaf54
1 changed files with 50 additions and 24 deletions
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74
app/models/item/search/query.rb
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@ -1,3 +1,6 @@
# encoding=utf-8
# ^ to put the regex in utf-8 mode
class Item
module Search
class Query
@ -89,21 +92,34 @@ class Item
# Load the text query labels from I18n, so that when we see, say,
# the filter "species:acara", we know it means species_support_id.
TEXT_KEYS_BY_LABEL = {}
IS_KEYWORDS = {}
OWNERSHIP_KEYWORDS = {}
I18n.available_locales.each do |locale|
TEXT_KEYS_BY_LABEL[locale] = {}
IS_KEYWORDS[locale] = Set.new
OWNERSHIP_KEYWORDS[locale] = {}
FIELD_CLASSES.keys.each do |key|
# A locale can specify multiple labels for a key by separating by
# commas: "occupies,zone,type"
labels = I18n.translate("items.search.labels.#{key}",
:locale => locale).split(',')
labels.each { |label| TEXT_KEYS_BY_LABEL[locale][label] = key }
{:owns => true, :wants => false}.each do |key, value|
translated_key = I18n.translate("items.search.labels.user_#{key}",
:locale => locale)
OWNERSHIP_KEYWORDS[locale][translated_key] = value
I18n.fallbacks[locale].each do |fallback|
FIELD_CLASSES.keys.each do |key|
# A locale can specify multiple labels for a key by separating by
# commas: "occupies,zone,type"
labels = I18n.translate("items.search.labels.#{key}",
:locale => fallback).split(',')
labels.each do |label|
plain_label = label.parameterize # 'é' => 'e'
TEXT_KEYS_BY_LABEL[locale][plain_label] = key
end
is_keyword = I18n.translate('items.search.flag_keywords.is',
:locale => fallback)
IS_KEYWORDS[locale] << is_keyword.parameterize
{:owns => true, :wants => false}.each do |key, value|
translated_key = I18n.translate("items.search.labels.user_#{key}",
:locale => fallback)
OWNERSHIP_KEYWORDS[locale][translated_key] = value
end
end
end
end
@ -139,28 +155,38 @@ class Item
:user_closet_hanger_ownership => :ownership
}
TEXT_FILTER_EXPR = /([+-]?)(?:([a-z]+):)?(?:"([^"]+)"|(\S+))/
TEXT_FILTER_EXPR = /([+-]?)(?:(\p{Word}+):)?(?:"([^"]+)"|(\S+))/
def self.from_text(text, user=nil)
filters = []
is_keyword = I18n.translate('items.search.flag_keywords.is')
text.scan(TEXT_FILTER_EXPR) do |sign, label, quoted_value, unquoted_value|
label ||= 'name'
raw_value = quoted_value || unquoted_value
is_positive = (sign != '-')
if label == is_keyword
# is-filters are weird. "-is:nc" is transposed to something more
# like "-nc:<nil>", then it's translated into a negative "is_nc"
# flag. Fun fact: "nc:foobar" and "-nc:foobar" also work. A bonus,
# I guess. There's probably a good way to refactor this to avoid
# the unintended bonus syntax, but this is a darn good cheap
# technique for the time being.
label = raw_value
raw_value = nil
Rails.logger.debug(label.inspect)
Rails.logger.debug(TEXT_KEYS_BY_LABEL[I18n.locale].inspect)
Rails.logger.debug(IS_KEYWORDS[I18n.locale].inspect)
if label
plain_label = label.parameterize
if IS_KEYWORDS[I18n.locale].include?(plain_label)
# is-filters are weird. "-is:nc" is transposed to something more
# like "-nc:<nil>", then it's translated into a negative "is_nc"
# flag. Fun fact: "nc:foobar" and "-nc:foobar" also work. A bonus,
# I guess. There's probably a good way to refactor this to avoid
# the unintended bonus syntax, but this is a darn good cheap
# technique for the time being.
label = raw_value
plain_label = raw_value.parameterize
raw_value = nil
end
key = TEXT_KEYS_BY_LABEL[I18n.locale][plain_label]
else
key = :name
end
key = TEXT_KEYS_BY_LABEL[I18n.locale][label]
if key.nil?
message = I18n.translate('items.search.errors.not_found.label',
:label => label)