How can I stop so many queries from running. With this configuration
it generates a few clean queries at the start then a query with 2
inner joins for each tag a line has (so 10 lines means at least 10
queries as each line has at least one tag).
It works, its just very inefficient.
I'd appreciate any advice anybody can offer or any resource you could
point me to :)
Thanks.
VIEW
%table
- @results.each do |line|
%tr
%td= line.filename
-# if I remove the line.tags part then it does NOT generate
excess queries, otherwise it generates a query for each tag in each
result
%td
- line.tags.each do |tag|
= tag.tagtext
CONTROLLER
def fetch_results
@results = Attachment.all(:attachment_tags => {:tag =>
Tag.all(:tagtext.like => '%myfile%')} )
end
MODELS
class AttachmentTag
include DataMapper::Resource
property :id, Serial
belongs_to :attachment
belongs_to :tag
end
class Attachment
include DataMapper::Resource
after :save, :move_file
property :id, Serial
property :filename, String
has n, :attachment_tags
has n, :tags, :through => :attachment_tags
...
...
end
class Tag
include DataMapper::Resource
property :id, Serial
property :tagtext, String
has n, :attachment_tags
has n, :attachments, :through => :attachment_tags
end
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