Upgrade to v7
The purpose of this note is to help developers to upgrade their agent from v6 to v7. Please read carefully and integrate the following breaking changes to ensure a smooth upgrade.
Please be sure of your agent type and version and pick the right documentation accordingly.
This is the documentation of the forest-express-sequelize
and forest-express-mongoose
Node.js agents that will soon reach end-of-support.
forest-express-sequelize
v9 and forest-express-mongoose
v9 are replaced by @forestadmin/agent
v1.
Please check your agent type and version and read on or switch to the right documentation.
Upgrade to v7
Upgrading to v7
This upgrade unlocks the following feature:
easier addition of additional databases
no need to re-authenticate when switching between projects/environments/team
dynamic smart action forms
automatic model update
Before upgrading to v7, please take note of the following requirement:
express
must be version 4.17 or higher
As for any dependency upgrade, it's very important to test this upgrade in your testing environments. Not doing so could result in your admin panel being unusable.
To upgrade to v7, simply run:
npm install forest-express-sequelize@^7.12.3
Breaking changes
Agent initialization
In the file middlewares/forestadmin.js
, the parameters of Liana.init
have been updated. A few parameters have been deprecated and will either be ignored or throw an error.
Two new parameters have also been introduced to ease the addition and management of multiple databases.
The below tables list all these parameters:
onlyCrudModule
Ignored
modelsDir
Ignored
sequelize
Ignored
mongoose
Ignored
secretKey
Error
envSecret
authKey
Error
authSecret
objectMapping
static instance of your object mapper (require('sequelize')
or require('mongoose')
)
connections
map of your existing connections, indexed by a unique name for each connections
Here is an example of an updated middlewares/forestadmin.js
file after the migration:
const { objectMapping, connections } = require('../models');
module.exports = async function forestadmin(app) {
app.use(
await Liana.init({
configDir: path.join(__dirname, '../forest'),
envSecret: process.env.FOREST_ENV_SECRET,
authSecret: process.env.FOREST_AUTH_SECRET,
objectMapping,
connections,
})
);
console.log(
chalk.cyan(
'Your admin panel is available here: https://app.forestadmin.com/projects'
)
);
};
Models index
The models/index.js
file should be updated as well, in order to export objectMapping
& connections
const fs = require('fs');
const path = require('path');
const Sequelize = require('sequelize');
const databasesConfiguration = require('../config/databases');
const connections = {};
const db = {};
databasesConfiguration.forEach((databaseInfo) => {
const connection = new Sequelize(
databaseInfo.connection.url,
databaseInfo.connection.options
);
connections[databaseInfo.name] = connection;
const modelsDir =
databaseInfo.modelsDir || path.join(__dirname, databaseInfo.name);
fs.readdirSync(modelsDir)
.filter((file) => file.indexOf('.') !== 0 && file !== 'index.js')
.forEach((file) => {
try {
const model = connection.import(path.join(modelsDir, file))(
connection,
Sequelize.DataTypes
);
db[model.name] = model;
} catch (error) {
console.error('Model creation error: ' + error);
}
});
});
Object.keys(db).forEach((modelName) => {
if ('associate' in db[modelName]) {
db[modelName].associate(db);
}
});
db.objectMapping = Sequelize;
db.connections = connections;
module.exports = db;
Introducing database configuration
A config/databases.js
file should be added as follows in order to declare the different database connections:
const path = require('path');
const databaseOptions = {
logging:
!process.env.NODE_ENV || process.env.NODE_ENV === 'development'
? console.log
: false,
pool: { maxConnections: 10, minConnections: 1 },
dialectOptions: {},
};
if (
process.env.DATABASE_SSL &&
JSON.parse(process.env.DATABASE_SSL.toLowerCase())
) {
const rejectUnauthorized = process.env.DATABASE_REJECT_UNAUTHORIZED;
if (
rejectUnauthorized &&
JSON.parse(rejectUnauthorized.toLowerCase()) === false
) {
databaseOptions.dialectOptions.ssl = { rejectUnauthorized: false };
} else {
databaseOptions.dialectOptions.ssl = true;
}
}
module.exports = [
{
name: 'default',
modelsDir: path.resolve(__dirname, '../models'),
connection: {
url: process.env.DATABASE_URL,
options: { ...databaseOptions },
},
},
];
Calling sequelize
with one of the 2 following syntaxes will not work anymore:
const { sequelize } = require('../models');
❌
const models = require('../models');
const sequelize = models.sequelize; ❌
Instead, you should now use
const sequelize = require('../models').connections.default;
Mongoose specific changes
If you made the above recommended changes in your models/index.js
file, your Mongoose model files should now be written this way:
// Models are now returned from a function
module.exports = (mongoose, Mongoose) => {
const schema = Mongoose.Schema({
'country': String,
...
});
return mongoose.model('companies', schema, 'companies');
};
Authentication
One of the changes introduced by the v7 is that you no longer need to re-authenticate when switching between projects/environments/team. In order to support this easier authentication flow, the changes described below need to be made.
New environment variable
A new environment variable called APPLICATION_URL
is required and must be added to your .env
file.
New CORS condition
A change in your app.js
is required to modify how CORS are handled. The value 'null'
must be accepted for authentication endpoints (lines 11-17).
let allowedOrigins = [/\.forestadmin\.com$/, /localhost:\d{4}$/];
if (process.env.CORS_ORIGINS) {
allowedOrigins = allowedOrigins.concat(process.env.CORS_ORIGINS.split(','));
}
const corsConfig = {
origin: allowedOrigins,
allowedHeaders: ['Authorization', 'X-Requested-With', 'Content-Type'],
maxAge: 86400, // NOTICE: 1 day
credentials: true,
};
app.use(
'/forest/authentication',
cors({
...corsConfig,
// The null origin is sent by browsers for redirected AJAX calls
// we need to support this in authentication routes because OIDC
// redirects to the callback route
origin: corsConfig.origin.concat('null'),
})
);
app.use(cors(corsConfig));
Running up multiple server instances
If you're running multiple instances of your agent (with a load balancer for example), you will need to set up a static client id.
Without a static client id, authentication will fail whenever a user makes a request to a different instance than the one he logged into.
First you will need to obtain a client id for your environment by running the following command:
curl -H "Content-Type: application/json" \
-H "Authorization: Bearer FOREST_ENV_SECRET" \
-X POST \
-d '{"token_endpoint_auth_method": "none", "redirect_uris": ["APPLICATION_URL/forest/authentication/callback"]}' \
https://api.forestadmin.com/oidc/reg
Then assign the client_id
value from the response (it's a JWT) to a FOREST_CLIENT_ID
variable in your .env file.
Important Notice
Changelogs
This release note covers only the major changes. To learn more, please refer to the changelogs in our different repositories:
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