128 lines
3.6 KiB
Ruby
128 lines
3.6 KiB
Ruby
class DataTable
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def initialize user, params
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@user = user
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@params = sanitize_params(params)
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@transactions = TransactionsQuery.new(@user)
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@table = @transactions.arel_table
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end
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def query
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@transactions.query
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end
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def predicates
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end
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def range_predicates name
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col = @params[:columns][name]
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[
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(@table[:name].gteq(col[:lower]) if col[:lower]),
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(@table[:name].lteq(col[:upper]) if col[:upper])
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]
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end
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def json
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#if columns[:time][:lower]
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#query = query.where(table[:time].gteq(columns[:time][:lower]))
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#end
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#if columns[:time][:upper]
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#query = query.where(table
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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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#query = transactions.query
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selection = ActiveRecord::Base.connection.execute(query.to_sql).to_a
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response_json(@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 response_json(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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data: selection
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}
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end
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end
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