100 lines
3.1 KiB
Ruby
100 lines
3.1 KiB
Ruby
module CouchRest
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module Model
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module DocumentQueries
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extend ActiveSupport::Concern
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module ClassMethods
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# Load all documents that have the model_type_key's field equal to the
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# name of the current class. Take the standard set of
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# CouchRest::Database#view options.
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def all(opts = {}, &block)
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view(:all, opts, &block)
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end
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# Returns the number of documents that have the model_type_key's field
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# equal to the name of the current class. Takes the standard set of
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# CouchRest::Database#view options
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def count(opts = {}, &block)
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all({:raw => true, :limit => 0}.merge(opts), &block)['total_rows']
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end
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# Load the first document that have the model_type_key's field equal to
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# the name of the current class.
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#
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# ==== Returns
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# Object:: The first object instance available
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# or
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# Nil:: if no instances available
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#
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# ==== Parameters
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# opts<Hash>::
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# View options, see <tt>CouchRest::Database#view</tt> options for more info.
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def first(opts = {})
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first_instance = self.all(opts.merge!(:limit => 1))
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first_instance.empty? ? nil : first_instance.first
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end
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# Load the last document that have the model_type_key's field equal to
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# the name of the current class.
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# It's similar to method first, just adds :descending => true
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#
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# ==== Returns
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# Object:: The last object instance available
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# or
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# Nil:: if no instances available
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#
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# ==== Parameters
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# opts<Hash>::
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# View options, see <tt>CouchRest::Database#view</tt> options for more info.
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def last(opts = {})
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first(opts.merge!(:descending => true))
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end
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# Load a document from the database by id
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# No exceptions will be raised if the document isn't found
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#
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# ==== Returns
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# Object:: if the document was found
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# or
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# Nil::
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#
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# === Parameters
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# id<String, Integer>:: Document ID
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# db<Database>:: optional option to pass a custom database to use
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def get(id, db = database)
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begin
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get!(id, db)
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rescue
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nil
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end
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end
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alias :find :get
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# Load a document from the database by id
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# An exception will be raised if the document isn't found
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#
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# ==== Returns
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# Object:: if the document was found
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# or
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# Exception
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#
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# === Parameters
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# id<String, Integer>:: Document ID
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# db<Database>:: optional option to pass a custom database to use
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def get!(id, db = database)
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raise CouchRest::Model::DocumentNotFound if id.blank?
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doc = db.get id
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build_from_database(doc)
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rescue RestClient::ResourceNotFound
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raise CouchRest::Model::DocumentNotFound
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end
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alias :find! :get!
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end
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end
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end
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end
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