members: api: Introduce Leave Record API

- It returns the member,reason of leave and approver from a particular period of time.

members/api/leaverecord.py

@@ -0,0 +1,53 @@
+import graphene
+from framework.api.user import UserBasicObj
+from django.contrib.auth.models import User
+from members.models import LeaveRecord
+from datetime import date, datetime
+
+class LeaveRecordObj(graphene.ObjectType):
+    member = graphene.Field(UserBasicObj)
+    approver = graphene.Field(UserBasicObj)
+    startDate = graphene.types.datetime.Date(required=True)
+    endDate = graphene.types.datetime.Date(required=True)
+    reason = graphene.String()
+
+    def resolve_member(self,info):
+        return  User.objects.values().get(id=self['member_id'])
+
+class getLeaveRecordsObj(graphene.ObjectType):
+    leaveRecords = graphene.List(LeaveRecordObj)
+
+    def resolve_leaveRecords(self, info):
+        return self['leaveRecords']
+
+class Query(object):
+    getLeaveRecords = graphene.Field(
+        getLeaveRecordsObj,
+        startDate = graphene.Date(required=True),
+        endDate = graphene.Date()
+    )
+    leaveRecords = graphene.List(LeaveRecordObj)
+
+
+    def resolve_getLeaveRecords(self, info, **kwargs):
+        startDate = kwargs.get('startDate')
+        endDate = kwargs.get('endDate')
+
+        leaveRecords = LeaveRecord.objects.values().all()
+
+        if startDate is not None:
+            leaveRecords = leaveRecords.filter(start_date__gte=startDate)
+        else:
+            raise Exception('StartDate is required')
+        if endDate is not None:
+            leaveRecords = leaveRecords.filter(end_date__lte=endDate)
+        else:
+            endDate = date.today()
+
+        data = {
+            'leaveRecords': leaveRecords.values()
+        }
+        return data
+
+    def resolve_leaveRecords(self, info, **kwargs):
+        return LeaveRecord.objects.values().all()

members/schema.py

@@ -7,6 +7,7 @@
 from .api.profile import Query as profileQuery
 from .api.group import Query as groupQuery
 from .api.webspace import Query as webspaceQuery
+from .api.leaverecord import Query as leaveRecordQuery
 from graphql_jwt.decorators import login_required
 #
 #       Mutations
@@ -81,6 +82,6 @@ class Mutation(object):
 #       Queries
 #
 
-class Query(profileQuery, groupQuery, webspaceQuery):
+class Query(profileQuery, groupQuery,leaveRecordQuery, webspaceQuery):
     pass