Created initial object link model

- add link(s)
- remove links
- get links

todo:
- exception handling
- checks
- unit tests
This commit is contained in:
Johannes Nickel 2012-07-16 00:12:06 +02:00
parent b234199d0a
commit 7be711dc26
4 changed files with 121 additions and 12 deletions

3
.gitignore vendored
View file

@ -18,3 +18,6 @@
/.project
db/schema.rb
Gemfile.lock
.DS_Store

View file

@ -5,7 +5,7 @@ class GettingStartedController < ApplicationController
# check if first user already exists
master_user = 0
count = User.all.count()
if count >= 2
if count == 1
master_user = 1
end

View file

@ -1,7 +1,113 @@
class Link < ActiveRecord::Base
class Object < ActiveRecord::Base
#before_create :check_object
#after_create :after_create, :cache_delete
#after_update :cache_delete
#after_destroy :cache_delete
=begin
Link.add(:link_types_id=>12,
:link_object_source => 'Ticket',
:link_object_source_value => 1,
:link_object_target=> 'Ticket',
:link_object_target_value=> 1)
Link.add(:link_types_id=>12,
:link_object_source_id => '1',
:link_object_source_value => 1,
:link_object_target_id=> '1',
:link_object_target_value=> 1)
Link.get_links_for_source_object(:link_object => 'Ticket',
:link_object_value => 1)
Link.get_links_for_target_object(:link_object => 'Ticket',
:link_object_value => 1)
Link.delete_link_by_source(:source_value=>1)
Link.delete_link_by_target(:target_value=>1)
Link.delete_all_links_by_value(:object_value=>1)
=end
has_many :link_types
def self.get_links_for_source_object(data)
linkobject_id = self.get_linktype_by_name(:name=>data[:link_object])
if linkobject_id
where(:link_object_source_id=>linkobject_id,:link_object_source_value=>data[:link_object_value])
end
end
class Type < ActiveRecord::Base
def self.get_links_for_target_object(data)
linkobject_id = self.get_linktype_by_name(:name=>data[:link_object])
if linkobject_id
where(:link_object_target_id=>linkobject_id,:link_object_target_value=>data[:link_object_value])
end
end
def self.add(data)
if data.has_key?(:link_object_source)
# it exists we have to delete it
linkobject_id = self.get_linktype_by_name(:name=>data[:link_object_source])
data[:link_object_source_id] = linkobject_id
data.delete(:link_object_source)
end
if data.has_key?(:link_object_target)
# it exists we have to delete it
linkobject_id = self.get_linktype_by_name(:name=>data[:link_object_target])
data[:link_object_target_id] = linkobject_id
data.delete(:link_object_target)
end
Link.create(data)
end
def self.delete_link_by_source(data)
Link.where(:link_object_source_value=>data[:source_value]).destroy_all
end
def self.delete_link_by_target(data)
Link.where(:link_object_target_value => data[:target_value]).destroy_all
end
def self.delete_all_links_by_value(data)
Link.where(["link_object_source_value = ? or link_object_target_value = ?", data[:object_value],data[:object_value]]).destroy_all
end
private
def self.get_linktype_by_name(data)
linkid = Link::Object.where(:name=>data[:name]).first
if linkid
return linkid.id
else
return nil
end
return linkid
end
#checks for a valid link type
def check_valid_link_type
Rails.logger.info "Logger Test"
puts "pre check link type"
end
def get_linkobject_by_key
puts "check for exisiting link"
end
#checks for an exisiting ling
def check_existing_link
puts "check for exisiting link"
end
end
class Link::Type < ActiveRecord::Base
end
class Link::Object < ActiveRecord::Base
end

View file

@ -187,13 +187,13 @@ class CreateTicket < ActiveRecord::Migration
create_table :links do |t|
t.references :link_types, :null => false
t.column :source_object_id, :integer, :null => false
t.column :source_key, :string, :limit => 50, :null => false
t.column :target_object_id, :integer, :null => false
t.column :target_key, :string, :limit => 50, :null => false
t.column :link_object_source_id, :integer, :null => false
t.column :link_object_source_value, :integer, :null => false
t.column :link_object_target_id, :integer, :null => false
t.column :link_object_target_value, :integer, :null => false
t.timestamps
end
add_index :links, [:source_object_id, :source_key, :target_object_id, :target_key, :link_types_id], :unique => true, :name => 'links_uniq_total'
add_index :links, [:link_object_source_id, :link_object_source_value, :link_object_target_id, :link_object_target_value, :link_types_id], :unique => true, :name => 'links_uniq_total'
end
def self.down