From 1fb5804d328c1f8bf49358c00a6b09ea90dd527e Mon Sep 17 00:00:00 2001
From: Andrew Kingston <aptkingston@ssl-mail.com>
Date: Tue, 6 Oct 2020 18:01:23 +0100
Subject: [PATCH] Add support for displaying linked record counts in List and
 RecordDetail

---
 .../src/RecordDetail.svelte                   | 14 +++++++++++
 packages/standard-components/src/fetchData.js | 23 ++++++++++++++++++-
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/packages/standard-components/src/RecordDetail.svelte b/packages/standard-components/src/RecordDetail.svelte
index 95723782bd..aa9d39c0cc 100644
--- a/packages/standard-components/src/RecordDetail.svelte
+++ b/packages/standard-components/src/RecordDetail.svelte
@@ -8,6 +8,12 @@
   let store = _bb.store
   let target
 
+  async function fetchModel(id) {
+    const FETCH_MODEL_URL = `/api/models/${id}`
+    const response = await _bb.api.get(FETCH_MODEL_URL)
+    return await response.json()
+  }
+
   async function fetchFirstRecord() {
     const FETCH_RECORDS_URL = `/api/views/all_${model}`
     const response = await _bb.api.get(FETCH_RECORDS_URL)
@@ -34,6 +40,14 @@
     }
 
     if (record) {
+      // Fetch model schema so we can check for linked records
+      const model = await fetchModel(record.modelId)
+      for (let key of Object.keys(model.schema)) {
+        if (model.schema[key].type === "link") {
+          record[key] = Array.isArray(record[key]) ? record[key].length : 0
+        }
+      }
+
       _bb.attachChildren(target, {
         hydrate: false,
         context: record,
diff --git a/packages/standard-components/src/fetchData.js b/packages/standard-components/src/fetchData.js
index 7a1c4b5f7c..a0c50c233a 100644
--- a/packages/standard-components/src/fetchData.js
+++ b/packages/standard-components/src/fetchData.js
@@ -4,7 +4,28 @@ export default async function fetchData(datasource) {
   const { isModel, name } = datasource
 
   if (name) {
-    return isModel ? await fetchModelData() : await fetchViewData()
+    const records = isModel ? await fetchModelData() : await fetchViewData()
+
+    // Fetch model schema so we can check for linked records
+    if (records && records.length) {
+      const model = await fetchModel(records[0].modelId)
+      const keys = Object.keys(model.schema)
+      records.forEach(record => {
+        for (let key of keys) {
+          if (model.schema[key].type === "link") {
+            record[key] = Array.isArray(record[key]) ? record[key].length : 0
+          }
+        }
+      })
+    }
+
+    return records
+  }
+
+  async function fetchModel(id) {
+    const FETCH_MODEL_URL = `/api/models/${id}`
+    const response = await api.get(FETCH_MODEL_URL)
+    return await response.json()
   }
 
   async function fetchModelData() {