我很难在模板中显示我的数组项。刚开始使用GAE中的实体关系,我没有在SO上找到合适的解决方案。我是否必须先在我的处理程序中执行查询。如果是这样,我是如何努力的。
数据存储区 Project
个实体示例显示
数据存储区 Employees
个实体示例显示
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()
模板
data
是通过angular的 http
服务
<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>
响应/ comments
的python代码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())) for proj in projects], default=date_handler))
来自angular的- 来自服务器的请求
var vm = this;
vm.projects = [];
$http.get('/comments')
.then(function(result) {
console.log(result);
vm.projects = result.data;
});
从数据存储区显示员工。
答案 0 :(得分:2)
您可以更改date_handler以处理ndb.Key,以便在返回的json中正确呈现Employee集合
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)
您可能想要更改此方法的名称,因为它不仅仅是执行date_handling