From 91c81b13c0023f7a7f1cd6486de2f18f1b459897 Mon Sep 17 00:00:00 2001
From: Pawel Kowalski <pawel.kowalski@iterativ.ch>
Date: Wed, 8 Aug 2018 14:43:49 +0200
Subject: [PATCH] implement a navigable book->topic->module query

---
 client/src/graphql/gql/bookQuery.gql          | 32 +++++++++++++++++++
 .../gql/{ => sandbox}/masterBlasterQuery.gql  |  0
 .../gql/sandbox/masterBlasterSkillBox.gql     | 31 ++++++++++++++++++
 server/book/models/book.py                    |  3 ++
 server/book/models/module.py                  |  4 +++
 server/book/models/topic.py                   |  7 ++++
 server/book/schema.py                         |  8 +++++
 7 files changed, 85 insertions(+)
 create mode 100644 client/src/graphql/gql/bookQuery.gql
 rename client/src/graphql/gql/{ => sandbox}/masterBlasterQuery.gql (100%)
 create mode 100644 client/src/graphql/gql/sandbox/masterBlasterSkillBox.gql

diff --git a/client/src/graphql/gql/bookQuery.gql b/client/src/graphql/gql/bookQuery.gql
new file mode 100644
index 00000000..bd6b05fd
--- /dev/null
+++ b/client/src/graphql/gql/bookQuery.gql
@@ -0,0 +1,32 @@
+query BookQuery {
+  books {
+    edges {
+      node {
+        id
+        title
+        topics(first:3) {
+          edges {
+            node {
+              id
+              title
+              slug
+              teaser
+              description
+              modules(first:3) {
+                edges {
+                  node {
+                    id
+                    title
+                    slug
+                    teaser
+                    heroImage
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/client/src/graphql/gql/masterBlasterQuery.gql b/client/src/graphql/gql/sandbox/masterBlasterQuery.gql
similarity index 100%
rename from client/src/graphql/gql/masterBlasterQuery.gql
rename to client/src/graphql/gql/sandbox/masterBlasterQuery.gql
diff --git a/client/src/graphql/gql/sandbox/masterBlasterSkillBox.gql b/client/src/graphql/gql/sandbox/masterBlasterSkillBox.gql
new file mode 100644
index 00000000..82129da6
--- /dev/null
+++ b/client/src/graphql/gql/sandbox/masterBlasterSkillBox.gql
@@ -0,0 +1,31 @@
+query BooksQuery {
+  books {
+    edges {
+      node {
+        id
+        slug
+        title
+
+      }
+    }
+  }
+
+  topics {
+    edges {
+      node {
+        id
+      }
+    }
+  }
+
+  modules {
+    edges {
+      node {
+        title
+        slug
+        heroImage
+      }
+    }
+  }
+
+}
diff --git a/server/book/models/book.py b/server/book/models/book.py
index e0ec923c..1d1916d9 100644
--- a/server/book/models/book.py
+++ b/server/book/models/book.py
@@ -27,3 +27,6 @@ class Book(Page):
     template = 'generic_page.html'
 
     subpage_types = ['book.Topic']
+
+    def get_child_ids(self):
+        return self.get_children().values_list('id', flat=True)
diff --git a/server/book/models/module.py b/server/book/models/module.py
index b1fde365..3183c454 100644
--- a/server/book/models/module.py
+++ b/server/book/models/module.py
@@ -52,3 +52,7 @@ class Module(Page):
     template = 'generic_page.html'
 
     parent_page_types = ['book.Topic']
+
+    @classmethod
+    def get_topic_modules(cls, topic):
+        return cls.objects.filter(id__in=topic.get_child_ids()).live()
diff --git a/server/book/models/topic.py b/server/book/models/topic.py
index 9da2ca92..283933ba 100644
--- a/server/book/models/topic.py
+++ b/server/book/models/topic.py
@@ -38,3 +38,10 @@ class Topic(Page):
 
     parent_page_types = ['book.Book']
     subpage_types = ['book.Module']
+
+    def get_child_ids(self):
+        return self.get_children().values_list('id', flat=True)
+
+    @classmethod
+    def get_book_topics(cls, book):
+        return cls.objects.filter(id__in=book.get_child_ids()).live()
diff --git a/server/book/schema.py b/server/book/schema.py
index c5d39288..01a01f10 100644
--- a/server/book/schema.py
+++ b/server/book/schema.py
@@ -31,6 +31,7 @@ class ModuleNode(DjangoObjectType):
 
 class TopicNode(DjangoObjectType):
     pk = graphene.Int()
+    modules = DjangoFilterConnectionField(ModuleNode)
 
     class Meta:
         model = Topic
@@ -46,9 +47,13 @@ class TopicNode(DjangoObjectType):
     def resolve_pk(self, *args, **kwargs):
         return self.id
 
+    def resolve_modules(self, *args, **kwargs):
+        return Module.get_topic_modules(self)
+
 
 class BookNode(DjangoObjectType):
     pk = graphene.Int()
+    topics = DjangoFilterConnectionField(TopicNode)
 
     class Meta:
         model = Book
@@ -64,6 +69,9 @@ class BookNode(DjangoObjectType):
     def resolve_pk(self, *args, **kwargs):
         return self.id
 
+    def resolve_topics(self, *args, **kwargs):
+        return Topic.get_book_topics(self)
+
 
 class ModulesQuery(object):
     books = DjangoFilterConnectionField(BookNode)