Configuring fields for content-types

The Content-type Builder is only accessible to create and update content-types when your Strapi application is in a development environment, else it will be in a read-only mode in other environments.

Content-types are composed of one or several fields. Each field is designed to contain specific kind of data, filled up in the Content Manager (see Writing content).

In the Content-type Builder, fields can be added at the creation of a new content-type or component, or afterward when a content-type or component is edited or updated. The following documentation lists all existing regular fields but also tackles the specificities of custom fields, components, and dynamic zones. For each, you will find a definition, explanation of the form they take once in the Content Manager, and instructions to configure them.

✏️ NOTE

Depending on which content-type or component is being created or edited, not all fields — including components and dynamic zones — are always available.

Regular fields

Regular fields are Strapi's default, built-in types of fields. Regular fields are listed in the Default tab when selecting a field for a content-type.

Text

The Text field displays a textbox that can contain small text. This field can be used for titles, descriptions, etc.

Setting name	Instructions
Name	Write the name of the Text field.
Type	Choose between Short text and Long text, to allow more or less space to fill up the Text field.

Setting name	Instructions
Default value	Write the default value of the Text field.
RegExp pattern	Write a regular expression to make sure the value of the Text field matches a specific format.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Maximum length	Tick to define a maximum number of characters allowed.
Minimum length	Tick to define a minimum number of characters allowed.

Rich Text

The Rich Text field displays an editor with formatting options to manage rich text. This field can be used for long written content.

Setting name	Instructions
Name	Write the name of the Rich Text field.

Setting name	Instructions
Default value	Write the default value of the Rich Text field.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Maximum length	Tick to define a maximum number of characters allowed.
Minimum length	Tick to define a minimum number of characters allowed.

Number

The Number field displays a field for any kind of number: integer, decimal and float.

Setting name	Instructions
Name	Write the name of the Number field.
Number format	Choose between integer, big integer, decimal and float.

Setting name	Instructions
Default value	Write the default value of the Number field.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Maximum value	Tick to define a maximum value allowed.
Minimum value	Tick to define a minimum value allowed.

Date

The Date field can display a date (year, month, day), time (hour, minute, second) or datetime (year, month, day, hour, minute, and second) picker.

Setting name	Instructions
Name	Write the name of the Date field.
Type	Choose between date, datetime and time

Setting name	Instructions
Default value	Write the default value of the Date field.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Time interval	The interval (in minutes) the timepicker will allow to select (for fields of type datetime and time).

Boolean

The Boolean field displays a toggle button to manage boolean values (e.g. Yes or No, 1 or 0, True or False).

Setting name	Instructions
Name	Write the name of the Boolean field.

Setting name	Instructions
Default value	Choose the default value of the Boolean field: true, null or false.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.

Relation

The Relation field allows to establish a relation with another content-type, that must be a collection type.

There are 6 different types of relations:

• One way: Content-type A has one Content-type B
• One-to-one: Content-type A has and belong to one Content-type B
• One-to-many: Content-type A belongs to many Content-type B
• Many-to-one: Content-type B has many Content-type A
• Many-to-many: Content-type A has and belongs to many Content-type B
• Many way: Content-type A has many Content-type B

Configuring the base settings of the Relation field consists in choosing with which existing content-type the relation should be established and the kind of relation. The edition window of the Relation field displays 2 grey boxes, each representing one of the content-types in relation. Between the grey boxes are displayed all possible relation types.

1. Click on the 2nd grey box to define the content-type B. It must be an already created collection type.
2. Click on the icon representing the relation to establish between the content-types.
3. Choose the Field name of the content-type A, meaning the name that will be used for the field in the content-type A.
4. (optional if disabled by the relation type) Choose the Field name of the content-type B.

Setting name	Instructions
Private field	Tick to make the field private and prevent it from being found via the API.

Email

The Email field displays an email address field with format validation to ensure the email address is valid.

Setting name	Instructions
Name	Write the name of the Email field.

Setting name	Instructions
Default value	Write the default value of the Email field.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Maximum length	Tick to define a maximum number of characters allowed.
Minimum length	Tick to define a minimum number of characters allowed.

Password

The Password field displays a password field that is encrypted.

Setting name	Instructions
Name	Write the name of the Password field.

Setting name	Instructions
Default value	Write the default value of the Password field.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Maximum length	Tick to define a maximum number of characters allowed.
Minimum length	Tick to define a minimum number of characters allowed.

Enumeration

The Enumeration field allows to configure a list of values displayed in a drop-down list.

Setting name	Instructions
Name	Write the name of the Enumeration field.
Values	Write the values of the enumeration, one per line.

Setting name	Instructions
Default value	Choose the default value of the Enumeration field.
Name override for GraphQL	Write a custom GraphQL schema type to override the default one for the field.
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.

✋ CAUTION

Since Strapi v4.1.3, enumeration values should always have an alphabetical character preceding any number as it could otherwise cause the server to crash without notice when the GraphQL plugin is installed.

Media

The Media field allows to choose one or more media files (e.g. image, video) from those uploaded in the Media Library of the application.

Setting name	Instructions
Name	Write the name of the Media field.
Type	Choose between Multiple media to allow multiple media uploads, and Single media to only allow one media upload.

Setting name	Instructions
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.
Select allowed types of media	Click on the drop-down list to untick media types not allowed for this field.

JSON

The JSON field allows to configure data in a JSON format, to store JSON objects or arrays.

Setting name	Instructions
Name	Write the name of the JSON field.

Setting name	Instructions
Private field	Tick to make the field private and prevent it from being found via the API.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the field to have a different value per locale.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Unique field	Tick to prevent another field to be identical to this one.

UID

The UID field displays a field that sets a unique identifier, optionally based on an existing other field from the same content-type.

Setting name	Instructions
Name	Write the name of the UID field. It must not contain special characters or spaces.
Attached field	Choose what existing field to attach to the UID field. Choose None to not attach any specific field.

Setting name	Instructions
Default value	Write the default value of the UID field.
Private field	Tick to make the field private and prevent it from being found via the API.
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Maximum length	Tick to define a maximum number of characters allowed.
Minimum length	Tick to define a minimum number of characters allowed.

💡 TIP

The UID field can be used to create a slug based on the Attached field.

Custom fields

Custom fields are a way to extend Strapi’s capabilities by adding new types of fields to content-types or components. Once installed (see Marketplace documentation), custom fields are listed in the Custom tab when selecting a field for a content-type.

Each custom field type can have basic and advanced settings. The Marketplace (opens new window) lists available custom fields, and hosts dedicated documentation for each custom field, including specific settings.

Components

Components are a combination of several fields. Components allow to create reusable sets of fields, that can be quickly added to content-types, dynamic zones but also nested into other components.

When configuring a component through the Content-type Builder, it is possible to either:

• create a new component by clicking on Create a new component (see Creating a new component),
• or use an existing one by clicking on Use an existing component.

Setting name	Instructions
Name	Write the name of the component for the content-type.
Select a component	When using an existing component only - Select from the drop-down list an existing component.
Type	Choose between Repeatable component to be able to use several times the component for the content-type, or Single component to limit to only one time the use of the component.

Setting name	Instructions
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Private field	Tick to make the field private and prevent it from being found via the API.
Maximum value	For repeatable components only - Tick to define a maximum number of characters allowed.
Minimum value	For repeatable components only - Tick to define a minimum number of characters allowed.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the component to be translated per available locale.

Dynamic zones

Dynamic zones are a combination of components that can be added to content-types. They allow a flexible content structure as once in the Content Manager, administrators have the choice of composing and rearranging the components of the dynamic zone how they want.

Setting name	Instructions
Name	Write the name of the dynamic zone for the content-type.

Setting name	Instructions
Required field	Tick to prevent creating or saving an entry if the field is not filled in.
Maximum value	Tick to define a maximum number of characters allowed.
Minimum value	Tick to define a minimum number of characters allowed.
Enable localization for this field	(if the Internationalization plugin is installed and localization is enabled for the content-type) Allow the dynamic zone to be translated per available locale.

After configuring the settings of the dynamic zone, its components must be configured as well. It is possible to either choose an existing component or create a new one.

✋ CAUTION

When using dynamic zones, different components cannot have the same field name with different types (or with enumeration fields, different values).