From c6908866ddaaca096c754bb0c38fe6338d1a4532 Mon Sep 17 00:00:00 2001
From: tactonbishop <tactonbishop@gmail.com>
Date: Sat, 19 Nov 2022 17:30:05 +0000
Subject: [PATCH] Last Sync: 2022-11-19 17:30:05

---
 Databases/GraphQL/Apollo/Apollo_Server.md     |  2 +-
 .../Using_arguments_with_Apollo_Client.md     | 64 ++++++++++++++++++-
 .../Adding_documents_to_a_collection.md       |  2 +-
 .../MongoDB/Creating_a_schema_and_model.md    |  2 +-
 .../MongoDB/Validating_Mongoose_schemas.md    |  2 +-
 Theory_of_Computation/Defining_a_computer.md  |  2 +-
 Trash/Creating_a_GraphQL_server.md            |  2 +-
 7 files changed, 69 insertions(+), 7 deletions(-)

diff --git a/Databases/GraphQL/Apollo/Apollo_Server.md b/Databases/GraphQL/Apollo/Apollo_Server.md
index 31ceed1..4037e0e 100644
--- a/Databases/GraphQL/Apollo/Apollo_Server.md
+++ b/Databases/GraphQL/Apollo/Apollo_Server.md
@@ -2,7 +2,7 @@
 title: Apollo Server
 categories:
   - Databases
-tags: [graphql]
+tags: [graphql, REST, APIs]
 ---
 
 # Apollo Server
diff --git a/Databases/GraphQL/Apollo/Using_arguments_with_Apollo_Client.md b/Databases/GraphQL/Apollo/Using_arguments_with_Apollo_Client.md
index 7396218..080b872 100644
--- a/Databases/GraphQL/Apollo/Using_arguments_with_Apollo_Client.md
+++ b/Databases/GraphQL/Apollo/Using_arguments_with_Apollo_Client.md
@@ -219,4 +219,66 @@ query track(id: 'xyz'){
 }
 ```
 
-The '
+The `id` parameter would be used by the `modules` resolver to return the array of the `Modules` type.
+
+## Variables in arguments
+
+Instead of writing the following within our query constants on the client-side:
+
+```js
+query GetTrack {
+  track(id: 'xyz'){
+    title
+  }
+}
+```
+
+We can make the code more reusable by using variables instead of the hardcoded `id` argument:
+
+```js
+query GetTrack($trackId: ID!) {
+  track(id: $trackId){
+    title
+  }
+}
+```
+
+This way we do not need to write a new query constant every time we want to return a specific track.
+
+## Send query with arguments using Apollo `useQuery`
+
+We can now write a proper query using the [useQuery hook](/Databases/GraphQL/Apollo/Apollo_Client.md#usequery-hook) from Apollo Client, with variables.
+
+First define our query constant:
+
+```js
+export const GET_TRACK = gql`
+  query GetTrack($trackId: ID!) {
+    track(id: $trackId) {
+      id
+      title
+      author {
+        name
+      }
+      description
+      modules {
+        id
+        title
+        length
+      }
+    }
+  }
+`;
+```
+
+Then to employ in React:
+
+```jsx
+const trackId = "xyz";
+
+const { loading, error, data } = useQuery(GET_TRACK, {
+  variables: trackId,
+});
+```
+
+Note that in contrast to the [simple example](/Databases/GraphQL/Apollo/Apollo_Client.md#query-constants)
diff --git a/Databases/MongoDB/Adding_documents_to_a_collection.md b/Databases/MongoDB/Adding_documents_to_a_collection.md
index 469e24c..5f104b1 100644
--- a/Databases/MongoDB/Adding_documents_to_a_collection.md
+++ b/Databases/MongoDB/Adding_documents_to_a_collection.md
@@ -1,7 +1,7 @@
 ---
 categories:
   - Databases
-tags: [mongo_db, node-js, mongoose]
+tags: [mongo-db, node-js, mongoose]
 ---
 
 # Adding documents to a collection
diff --git a/Databases/MongoDB/Creating_a_schema_and_model.md b/Databases/MongoDB/Creating_a_schema_and_model.md
index f753aa9..ad94983 100644
--- a/Databases/MongoDB/Creating_a_schema_and_model.md
+++ b/Databases/MongoDB/Creating_a_schema_and_model.md
@@ -1,7 +1,7 @@
 ---
 categories:
   - Databases
-tags: [mongo_db, node-js, mongoose]
+tags: [mongo-db, node-js, mongoose]
 ---
 
 # Creating a schema and model
diff --git a/Databases/MongoDB/Validating_Mongoose_schemas.md b/Databases/MongoDB/Validating_Mongoose_schemas.md
index d965fa6..52ecb94 100644
--- a/Databases/MongoDB/Validating_Mongoose_schemas.md
+++ b/Databases/MongoDB/Validating_Mongoose_schemas.md
@@ -1,7 +1,7 @@
 ---
 categories:
   - Databases
-tags: [mongo_db, node-js, mongoose]
+tags: [mongodb, node-js, mongoose]
 ---
 
 # Validating Mongoose schemas
diff --git a/Theory_of_Computation/Defining_a_computer.md b/Theory_of_Computation/Defining_a_computer.md
index c46f90d..19798da 100644
--- a/Theory_of_Computation/Defining_a_computer.md
+++ b/Theory_of_Computation/Defining_a_computer.md
@@ -2,7 +2,7 @@
 categories:
   - Computer Architecture
 tags:
-  - theory-of-omputation
+  - theory-of-computation
   - history
 ---
 
diff --git a/Trash/Creating_a_GraphQL_server.md b/Trash/Creating_a_GraphQL_server.md
index a630d1a..e8b659d 100644
--- a/Trash/Creating_a_GraphQL_server.md
+++ b/Trash/Creating_a_GraphQL_server.md
@@ -2,7 +2,7 @@
 title: Creating a GraphQL server
 categories:
   - Databases
-tags: [graph-ql]
+tags: [graphql]
 ---
 
 # Creating a GraphQL server