# Migration guide from beta.17.4 through beta.17.8 to beta.18

Upgrading your Strapi application to v3.0.0-beta.18.

Make sure your server is not running until the end of the migration

# Upgrading your dependencies

Start by upgrading your dependencies. Make sure to use exact versions.

WARNING

Starting from beta.18 the database packages have been changed to allow future changes.

  • strapi-hook-knex has been removed and merged into the bookshelf database connector.
  • strapi-hook-bookshelf is renamed strapi-connector-bookshelf.
  • strapi-hook-mongoose is renamed strapi-connector-mongoose.

Update your package.json accordingly:

Then run either yarn install or npm install.

# Database configuration

Now that you have installed the new database package, you need to update your database.json configuration files located in ./config/environments/{env}/database.json.

You can now only use the connector name instead of the complete package name.

# Adding new root page files

We have created new home pages for your api url. You will need to copy index.html and production.html into your public folder. You can find those two files here (opens new window).

# Updating csp options

The admin panel contains certain assets that use data:img;base64 images. To allow rendering of those assets you can update the files ./config/environments/{env}/security.json as follows:

Before

{
  "csp": {
    "enabled": true,
    "policy": [
      {
        "img-src": "'self' http:"
      },
      "block-all-mixed-content"
    ]
  }
  //....
}

After

{
  "csp": {
    "enabled": true,
    "policy": ["block-all-mixed-content"]
  }
  //....
}

If you need more fine control you can also simply add the data: option to the img-src option.

# ctx.state.user

Previously the ctx.state.user was populated with the user informations, its role and permissions. To avoid perfromance issues the role is the only populated relation on the user by default.

# File model

The file model has been updated. The size field is now a decimal number, allowing correct sorting behavior.

You will need to clear some database indexes if you are using either MySQL or PostgreSQL.

# Date type changes

We have introduced new types in the admin panel: date, datetime and time. Previously all of those types where saved as datetime.

You will need to change the type of your fields from date to datetime if you don't want to migrate your data.

  • To migrate your old date to datetime, change the field type from date to datetime. NO data migration is required.
  • To migrate your old date to new date, you will need to migrate your data to be of the format: YYYY-MM-DD
  • To migrate your old date to the new time, change the field type from date to time. You will also need to transform them to be of the format: HH:mm:ss.SSS

# Groups become Components

If you were using the groups feature, you will need to apply some changes:

Start by renaming the ./groups folder to ./components in your project root folder.

Components now are placed into categories. To reflect this you must move your components inside category folders.

WARNING

Make sure to use - in your file names (Do not use spaces or underscores).

# Example

Before

groups/
├── seo-metadata.json
└── image-text.json

After

components/
├── seo/
│   └── metadata.json
└── content/
    └── image-text.json

Now that you have moved your component into categories. You need to update your content-types to reference them correctly.

Before ./api/restaurant/models/Restaurant.settings.json

{
  "connection": "default",
  "collectionName": "restaurants",
  "info": {
    "name": "restaurant",
    "description": ""
  },
  "options": {
    "increments": true,
    "timestamps": ["created_at", "updated_at"]
  },
  "attributes": {
    "title": {
      "type": "string"
    },
    "seo_metadatas": {
      "type": "group",
      "group": "seo-metadata",
      "repeatable": true
    },
    "cover": {
      "type": "group",
      "group": "image-text"
    }
  }
}

After ./api/restaurant/models/Restaurant.settings.json

{
  "connection": "default",
  "collectionName": "restaurants",
  "info": {
    "name": "restaurant",
    "description": ""
  },
  "options": {
    "increments": true,
    "timestamps": ["created_at", "updated_at"]
  },
  "attributes": {
    "title": {
      "type": "string"
    },
    "seo_metadatas": {
      "type": "component",
      "component": "seo.metadata", // {category}.{name}
      "repeatable": true
    },
    "cover": {
      "type": "component",
      "component": "content.image-text"
    }
  }
}

# Database migration of groups

️❗️ WARNING

Make sure to do a database backup before your migration.

Those migration are only necessary if you have data in production. Otherwise you should simply recreate your db. To keep your preferences you can backup the core_store table data.

# Bookshelf

Some database changes have occured:

  • Component join tables have been renamed from {content_type}_groups to {content_type}_components.
  • Component join tables column group_type is renamed to component_type.
  • Component join tables column group_id is renamed to component_id.

Migration queries

Make sure to run those queries for the tables that exist in your database.

Queries for a Restaurant content type

You might notice that you still have some tables with names containing the group keyword. Those are the tables that contain the groups data.

If you want to rename them you have 3 steps to follow:

1. Rename the table in your DB (you can use the table renaming query shown above).

2. Change the collectionName of the component

Before ./components/yourcategoryname/yourcomponentname.json

{
  "collectionName": "groups_old_table_name"
  //...
}

After ./components/yourcategoryname/yourcomponentname.json

{
  "collectionName": "components_new_table_name"
  //....
}

3. Update the component_type values in the join tables

Repeat this query for every join table where you are using this component.

UPDATE restaurant_components
SET component_type = 'components_new_table_name'
WHERE component_type = 'groups_old_table_name';

4. If you store files in groups, update the related_type values

UPDATE upload_file_morph
SET related_type = 'components_new_table_name'
WHERE related_type = 'groups_old_table_name';

# Mongo

In mongo the relation between a content type and its components is held in an array of references. To know which component type it referes to, the array also contains a kind attribute containing the component Schema name.

How to migrate

1. Get your new global ids

The kind attribute references the Strapi globalId of a model. To get your component global ids run:

strapi console

Object.keys(strapi.components).map(key => strapi.components[key].globalId);
//[
// 'ComponentCategoryMyComponent',
// 'ComponentCategoryMyOtherComponent',
//]

2. Rename the component collections

// renaming a collection groups_my_group
db.collection.renameCollection('groups_my_group', 'components_my_component');

3. Change the collectionName of the component

Before ./components/yourcategoryname/yourcomponentname.json

{
  "collectionName": "groups_old_table_name"
  //...
}

After ./components/yourcategoryname/yourcomponentname.json

{
  "collectionName": "components_new_table_name"
  //....
}

4. Rename the kind attributes

To know the old kind name of a group here is the function that creates it:

toGlobalId = name => upperFirst(camelCase(`group_${name}`));
// my-group => GroupMyGroup

Query to update the kind for on filed in one contentType:

db.getCollection('contentTypeCollection').update(
  { 'componentField.kind': 'GroupsMyGroup' },
  { $set: { 'componentField.$[].kind': 'ComponentCategoryMyComponent' } },
  { multi: true }
);

# Rebuilding your administration panel

Now delete the .cache and build folders. Then run yarn develop.