python - Datastore One-to-Many Google App Engine -


i'm struggling display array items in template. started entity relationships in gae , i'm not finding suitable solutions on so. have perform query first in handler. if so, how coz i'm struggling logic.

datastore project entities example display

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datastore employees entities example display

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project.py

class project(ndb.model):     projectid = ndb.integerproperty(required=true)     title = ndb.stringproperty(required=true)     description = ndb.stringproperty(required=true)     startat = ndb.datetimeproperty(indexed=true)     endat = ndb.datetimeproperty()     isfullday = ndb.booleanproperty()     days = ndb.keyproperty(kind='companyday', repeated=true)     employees = ndb.keyproperty(kind='employees', repeated=true)     client = ndb.keyproperty(kind='client')  class employees(ndb.model):     name = ndb.stringproperty()     role = ndb.stringproperty()

template

data fetched backend through angular's http service

 <md-content  class="md-padding projects" layout="row" layout-wrap>         <md-card ng-repeat="data in controller.projects" flex="20" ng-click="editproject(data)">             <img src="" alt="">             <md-card-content>                 <div class="project-info">                     <h2 class="md-title">{{ data.title }}</h2>                     <p>{{ data.description }}</p>                     <p>{{ data.employees }}</p>                  </div>             </md-card-content>         </md-card>     </md-content>

python code responds /comments

class commentsjsonhandler(webapp2.requesthandler): @classmethod def route(cls):     """     name: index, template: /     """     return webapp2.route('/comments', handler=cls, name='_commments_')  def get(self):       projects = project.query()      def date_handler(obj):         print obj         if isinstance(obj, datetime):             return obj.isoformat()         else:             return str(obj)      self.response.out.write(json.dumps([dict(proj.to_dict(), **dict(id=proj.key.id())) proj in projects], default=date_handler))

from angular - code requests server

    var vm = this;     vm.projects = [];     $http.get('/comments')         .then(function(result) {             console.log(result);             vm.projects = result.data;          });

displaying employees datastore.

enter image description here

you change date_handler handle ndb.key render employee collection in returned json

def date_handler(obj):     print obj     if isinstance(obj, datetime):         return obj.isoformat()     elif isinstance(obj, ndb.key):       return obj.get().to_dict()     else:         return str(obj)

you may want change name of method not doing date_handling more


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