130 lines
2.8 KiB
Ruby
130 lines
2.8 KiB
Ruby
class Changeset < ActiveRecord::Base
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require 'xml/libxml'
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belongs_to :user
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has_many :changeset_tags, :foreign_key => 'id'
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has_many :nodes
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has_many :ways
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has_many :relations
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has_many :old_nodes
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has_many :old_ways
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has_many :old_relations
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validates_presence_of :user_id, :created_at
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validates_inclusion_of :open, :in => [ true, false ]
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# Use a method like this, so that we can easily change how we
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# determine whether a changeset is open, without breaking code in at
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# least 6 controllers
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def is_open?
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return open
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end
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def self.from_xml(xml, create=false)
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begin
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p = XML::Parser.new
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p.string = xml
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doc = p.parse
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cs = Changeset.new
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doc.find('//osm/changeset').each do |pt|
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if create
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cs.created_at = Time.now
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end
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pt.find('tag').each do |tag|
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cs.add_tag_keyval(tag['k'], tag['v'])
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end
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end
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rescue Exception => ex
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print "noes "+ ex.to_s + "\n"
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cs = nil
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end
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return cs
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end
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def tags
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unless @tags
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@tags = {}
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self.changeset_tags.each do |tag|
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@tags[tag.k] = tag.v
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end
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end
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@tags
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end
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def tags=(t)
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@tags = t
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end
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def add_tag_keyval(k, v)
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@tags = Hash.new unless @tags
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@tags[k] = v
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end
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def save_with_tags!
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t = Time.now
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Changeset.transaction do
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# fixme update modified_at time?
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# FIXME there is no modified_at time, should it be added
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self.save!
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end
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ChangesetTag.transaction do
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tags = self.tags
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ChangesetTag.delete_all(['id = ?', self.id])
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tags.each do |k,v|
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tag = ChangesetTag.new
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tag.k = k
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tag.v = v
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tag.id = self.id
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tag.save!
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end
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end
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end
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def to_xml
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doc = OSM::API.new.get_xml_doc
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doc.root << to_xml_node()
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return doc
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end
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def to_xml_node(user_display_name_cache = nil)
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el1 = XML::Node.new 'changeset'
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el1['id'] = self.id.to_s
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user_display_name_cache = {} if user_display_name_cache.nil?
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if user_display_name_cache and user_display_name_cache.key?(self.user_id)
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# use the cache if available
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elsif self.user.data_public?
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user_display_name_cache[self.user_id] = self.user.display_name
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else
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user_display_name_cache[self.user_id] = nil
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end
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el1['user'] = user_display_name_cache[self.user_id] unless user_display_name_cache[self.user_id].nil?
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self.tags.each do |k,v|
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el2 = XML::Node.new('tag')
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el2['k'] = k.to_s
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el2['v'] = v.to_s
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el1 << el2
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end
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el1['created_at'] = self.created_at.xmlschema
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el1['open'] = self.open.to_s
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# FIXME FIXME FIXME: This does not include changes yet! There is
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# currently no changeset_id column in the tables as far as I can tell,
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# so this is just a scaffold to build on, not a complete to_xml
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return el1
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end
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end
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