fix: handle wrong nested relation param values

re #856

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nocodb/src/lib/dataMapper/lib/sql/BaseModelSql.ts

@@ -1266,7 +1266,10 @@ class BaseModelSql extends BaseModel {
     );
     let { fields } = restArgs;
     const { cn } = this.hasManyRelations.find(({ tn }) => tn === child) || {};
-    const _cn = this.dbModels[child].columnToAlias?.[cn];
+    if (!this.dbModels[child]) {
+      return;
+    }
+    const _cn = this.dbModels[child]?.columnToAlias?.[cn];
 
     if (fields !== '*' && fields.split(',').indexOf(cn) === -1) {
       fields += ',' + cn;
@@ -1345,6 +1348,10 @@ class BaseModelSql extends BaseModel {
       fields += ',' + cn;
     }
 
+    if (!this.dbModels[child]) {
+      return;
+    }
+
     const childs = await this._run(
       driver.union(
         parentIds.map(id => {
@@ -1498,7 +1505,11 @@ class BaseModelSql extends BaseModel {
         fields += ',' + this.pks[0].cn;
       }
 
+      if (parents)
         for (const parent of parents.split(',')) {
+          if (!parent) {
+            continue;
+          }
           const { cn } =
             this.belongsToRelations.find(({ rtn }) => rtn === parent) || {};
           if (fields !== '*' && fields.split(',').indexOf(cn) === -1) {
@@ -1525,6 +1536,7 @@ class BaseModelSql extends BaseModel {
         );
       }
 
+      if (parents)
         await Promise.all(
           parents.split(',').map((parent, index): any => {
             if (!parent) {
@@ -1945,6 +1957,8 @@ class BaseModelSql extends BaseModel {
       fields += ',' + rcn;
     }
 
+    if (!this.dbModels[parent]) return;
+
     const parents = await this._run(
       driver(this.dbModels[parent].tnPath)
         // .select(...fields.split(',')