96 lines
2.9 KiB
Ruby
96 lines
2.9 KiB
Ruby
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module DataTable
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extend ActiveSupport::Concern
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def apply_filter(user, params)
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params = sanitize_params(params)
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selection = user.transactions
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# filter time
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lower = params[:columns][:time][:lower]
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upper = params[:columns][:time][:upper]
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if lower and upper
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selection = selection.where(created_at: lower..upper)
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elsif lower
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selection = selection.where('created_at > :lower', lower: lower)
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elsif upper
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selection = selection.where('created_at < :upper', upper: upper)
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end
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# filter amount TODO this filters on absolute value
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lower = params[:columns][:amount][:lower]
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upper = params[:columns][:amount][:upper]
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if lower and upper
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selection = selection.where(amount: lower..upper)
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elsif lower
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selection = selection.where('amount > :lower', lower: lower)
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elsif upper
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selection = selection.where('amount < :upper', upper: upper)
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end
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# filter peer # TODO peer.name
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peer = params[:columns][:peer][:value]
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if peer
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selection = selection.where("(debtor_id = :id AND creditor_id LIKE :peer) OR (creditor_id = :id AND debtor_id LIKE :peer)", id: user.id, peer: "%#{peer}%")
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end
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# filter issuer # TODO issuer.name
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issuer = params[:columns][:issuer][:value]
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if issuer
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selection = selection.where("issuer_id LIKE :re", re: "%#{issuer}%")
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end
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# filter message
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message = params[:columns][:message][:value]
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if message
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selection = selection.where("message LIKE :re", re: "%#{message}%")
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end
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selection_to_json(user, params[:draw], selection)
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end
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private
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def sanitize_params(params)
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# Parsing according to https://datatables.net/manual/server-side
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clean = {
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draw: params.require(:draw).to_i,
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start: params.require(:start).to_i,
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length: params.require(:length).to_i,
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columns: Hash.new
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}
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params.require(:columns).each do |i, column|
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type, value = column.require(:search)[:value].split(':')
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h = clean[:columns][column.require(:data).to_sym] = {
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name: column[:name],
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searchable: column[:searchable] == 'true',
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orderable: column[:orderable] == 'true',
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type: type
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}
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if type == 'number-range'
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h[:lower], h[:upper] = value.split('~').map &:to_i
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elsif type == 'date-range'
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h[:lower], h[:upper] = value.split('~').map &:to_datetime
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else
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h[:value] = value
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end
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end
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return clean
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end
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def selection_to_json(user, draw, selection)
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{
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draw: draw,
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recordsTotal: user.transactions.count,
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recordsFiltered: selection.count,
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data: selection.offset(params[:start]).take(params[:length]).map { |transaction| {
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time: transaction.created_at,
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amount: transaction.signed_amount_for(user),
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peer: transaction.peer_of(user).try(:name),
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issuer: transaction.issuer.name,
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message: transaction.message,
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}}
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}
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end
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end
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