60 lines
2 KiB
Ruby
60 lines
2 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_to_json user, params[:draw], user.transactions
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.where(created_at: params[:columns][:time][:lower]..params[:columns][:time][:upper])
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.where("('debtor' = :id AND 'creditor' LIKE :peer) OR ('creditor' = :id AND 'debtor' LIKE :peer)", id: user.id, peer: "%#{params[:columns][:peer][:value]}%")
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.where("'issuer' LIKE :re", re: "%#{params[:columns][:issuer][:value]}%")
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.where("'message' LIKE :re", re: "%#{params[:columns][:message][:value]}%")
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# TODO: what about nil?
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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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