Error to call data from ng-repeat to chart

ionic-v1
1

Hi Guys i have a simple trouble here

are possible to call data with ng-repeat to chart ?

i make a ng-repeat but when i call the data to chart i have parsing error data
if someone to know how to call data from ng-repeat to chart please tell me.

my code like this

<div class="card" ng-repeat = "a in item" >
        <div class="item item-text-wrap contains-chart">
        <h2>Harga</h2>
        <canvas id="bar" class="chart chart-line" data={{a.price}}
        labels="graph.labels" series='graph.series' style="width: 100%; min-height: 300px; margin: 0 auto; position: relative;"></canvas>
        </div>
      </div>

this code not work for me,