docs: add demo with relation and projection

Author: nodkz

examples/elastic50/schema.js

@@ -1,7 +1,7 @@
 /* @flow */
 
 import elasticsearch from 'elasticsearch';
-import { graphql } from 'graphql-compose';
+import { graphql, TypeComposer } from 'graphql-compose';
 import { composeWithElastic, elasticApiFieldConfig } from '../../src'; // from 'graphql-compose-elasticsearch';
 
 const { GraphQLSchema, GraphQLObjectType } = graphql;
@@ -102,12 +102,34 @@ const UserEsTC = composeWithElastic({
   pluralFields: ['skills', 'languages'],
 });
 
+const ProxyTC = TypeComposer.create(`type ProxyDebugType { source: JSON }`);
+ProxyTC.addResolver({
+  name: 'showArgs',
+  kind: 'query',
+  args: {
+    source: 'JSON',
+  },
+  type: 'ProxyDebugType',
+  resolve: ({ args }) => args,
+});
+
+UserEsTC.addRelation('showRelationArguments', {
+  resolver: () => ProxyTC.getResolver('showArgs'),
+  prepareArgs: {
+    source: source => source,
+  },
+  projection: {
+    name: true,
+    salary: true,
+  },
+});
+
 const schema = new GraphQLSchema({
   query: new GraphQLObjectType({
     name: 'Query',
     fields: {
-      user: UserEsTC.getResolver('search').getFieldConfig(),
-      userConnection: UserEsTC.getResolver('searchConnection').getFieldConfig(),
+      userSearch: UserEsTC.getResolver('search').getFieldConfig(),
+      userSearchConnection: UserEsTC.getResolver('searchConnection').getFieldConfig(),
       elastic50: elasticApiFieldConfig({
         host: 'http://user:pass@localhost:9200',
         apiVersion: '5.0',

package.json

@@ -49,7 +49,7 @@
     "express-graphql": "^0.6.11",
     "flow-bin": "^0.57.3",
     "graphql": "^0.11.7",
-    "graphql-compose": "^2.9.2",
+    "graphql-compose": "^2.9.4",
     "jest": "^21.2.1",
     "nodemon": "^1.12.1",
     "npm-run-all": "^4.1.1",

yarn.lock

@@ -811,7 +811,7 @@ babel-polyfill@^6.26.0:
     core-js "^2.5.0"
     regenerator-runtime "^0.10.5"
 
-babel-preset-env@^1.6.0:
+babel-preset-env@^1.6.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/babel-preset-env/-/babel-preset-env-1.6.1.tgz#a18b564cc9b9afdf4aae57ae3c1b0d99188e6f48"
   dependencies:
@@ -1755,7 +1755,7 @@ eslint-plugin-flowtype@^2.37.0:
   dependencies:
     lodash "^4.15.0"
 
-eslint-plugin-import@^2.7.0:
+eslint-plugin-import@^2.8.0:
   version "2.8.0"
   resolved "https://registry.yarnpkg.com/eslint-plugin-import/-/eslint-plugin-import-2.8.0.tgz#fa1b6ef31fcb3c501c09859c1b86f1fc5b986894"
   dependencies:
@@ -2430,14 +2430,14 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.4, graceful-fs@^4.1.6:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
 
-graphql-compose@^2.9.0:
-  version "2.9.2"
-  resolved "https://registry.yarnpkg.com/graphql-compose/-/graphql-compose-2.9.2.tgz#b73d33e5ef2334142763a680dba3bb958b2a6d6e"
+graphql-compose@^2.9.4:
+  version "2.9.4"
+  resolved "https://registry.yarnpkg.com/graphql-compose/-/graphql-compose-2.9.4.tgz#8e0a55435b83b21f3b60b4b728f74be2c48fc10e"
   dependencies:
     babel-runtime "^6.26.0"
     object-path "^0.11.4"
 
-graphql@^0.11.3:
+graphql@^0.11.7:
   version "0.11.7"
   resolved "https://registry.yarnpkg.com/graphql/-/graphql-0.11.7.tgz#e5abaa9cb7b7cccb84e9f0836bf4370d268750c6"
   dependencies:
@@ -4732,7 +4732,7 @@ sax@^1.2.1:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.2.tgz#fd8631a23bc7826bef5d871bdb87378c95647828"
 
-semantic-release@^8.2.0:
+semantic-release@^8.2.1:
   version "8.2.1"
   resolved "https://registry.yarnpkg.com/semantic-release/-/semantic-release-8.2.1.tgz#0bd4c2d372b328b2617fb34688937e58387f1bc1"
   dependencies: