Sha256: cc21efa5bdb4120cc9fb7c828e92747fcd6d041792f701804be4711111323e96
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Size: 1.43 KB
Versions: 9
Compression:
Stored size: 1.43 KB
Contents
class Tag < ActiveRecord::Base
class Validator < ActiveModel::Validator
def validate(record)
validate_presence! record
validate_uniqueness! record
end
def validate_presence!(record)
if record.name.blank?
msg = "Your tag can't be blank."
record.errors['name'] << msg
elsif record.name.length < 1
msg = "Your tag needs to be at least 1 character long."
record.errors['name'] << msg
end
end
def validate_uniqueness!(record)
tag = Tag.where('tags.name = ?', record.name).first
unless tag.nil?
msg = "You already have a tag with this name: #{tag.name}"
record.errors['uniqueness'] << msg
return
end
end
end
include ActiveModel::Validations
validates_with Tag::Validator
def ==(other)
self.class.table_name == other.class.table_name && self.id == other.id
end
def posts
post_scope = ->(tag) { where '? = ANY (posts.tags)', tag.id }
options = {}
reflection = ActiveRecord::Reflection::HasManyReflection.new(:posts, post_scope, options, self.class)
association = PostsAssociation.new(self, reflection)
@posts ||= ActiveRecord::Associations::CollectionProxy.new(Post, association)
end
private
class PostsAssociation < ActiveRecord::Associations::HasManyAssociation
def scope(opts = {})
Post.where('? = ANY (posts.tags)', owner.id).published.order('published_at DESC')
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems