feat(associations): Allow to skip associations.

Author: vincentdesmares

package.json

@@ -17,13 +17,13 @@
     "node": ">=9.11.2"
   },
   "devDependencies": {
+    "dataloader-sequelize": "^1.7.6",
     "eslint": "^4.16.0",
     "eslint-config-standard": "^11.0.0-beta.0",
     "eslint-plugin-import": "^2.8.0",
     "eslint-plugin-node": "^5.2.1",
     "eslint-plugin-promise": "^3.6.0",
     "eslint-plugin-standard": "^3.0.1",
-    "dataloader-sequelize": "^1.7.6",
     "express": "^4.16.4",
     "graphql": "^14.0.2",
     "graphql-relay": "^0.5.5",

src/generate/associationsFields.js

@@ -1,6 +1,7 @@
 const { GraphQLList, GraphQLString, GraphQLInt } = require('graphql')
 const { attributeFields } = require('graphql-sequelize')
 const createResolver = require('../createResolver')
+const debug = require('debug')('gsg')
 
 const generateAssociationField = (relation, types, resolver = null) => {
   const type =
@@ -67,18 +68,24 @@ const injectAssociations = (
   proxyModelName = null
 ) => {
   const modelName = proxyModelName || modelType.name
+  if (Object.keys(modelName).length === 0) {
+    throw new Error(
+      'Associations cannot be injected if no models were provided.'
+    )
+  }
   const associations = models[modelName].associations
   if (Object.keys(associations).length === 0) {
     return modelType
   }
   const associationsFields = {}
   for (let associationName in associations) {
     if (!graphqlSchemaDeclaration[associations[associationName].target.name]) {
-      throw new Error(
+      debug(
         `Cannot generate the association for model [${
           associations[associationName].target.name
-        }] as it wasn't declared in the schema declaration.`
+        }] as it wasn't declared in the schema declaration. Skipping it.`
       )
+      continue
     }
     associationsFields[associationName] = generateAssociationField(
       associations[associationName],