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schema-builder

This package lets you define and compile OpenStreetMap presets, fields, and other tagging info into the format expected by the iD editor.

The iD Tagging Schema project uses this to manage iD's tags. You can use it to create a custom schema for your own iD instance.

Usage

Building Distribution Data

To validate your source data and compile output files for iD (i.e. when releasing a new schema version):

const schemaBuilder = require('@ideditor/schema-builder');
schemaBuilder.buildDist({
  inDirectory: 'data',
  interimDirectory: 'interim',
  outDirectory: 'dist',
  sourceLocale: 'en',
  taginfoProjectInfo: {
    name: 'IntrepiD',
    description: 'iD editor, but adventurous.',
    project_url: 'https://example.com/IntrepiD',
    contact_name: 'J. Maintainer',
    contact_email: 'maintainer@example.com'
  }
});

The following options are optional:

You can also include options from schemaBuilder.fetchTranslations() in order to download translation files at the same time as compiling data.

Building Development Data

To validate your source data and compile files needed during development:

const schemaBuilder = require('@ideditor/schema-builder');
schemaBuilder.buildDev({
  inDirectory: 'data',
  interimDirectory: 'interim',
  sourceLocale: 'en'
});

The following options are identical to those for schemaBuilder.buildDist():

Validating Data

To validate your source data without compiling anything:

const schemaBuilder = require('@ideditor/schema-builder');
schemaBuilder.validate({
  inDirectory: 'data'
});

The following options are identical to those for schemaBuilder.buildDist():

Fetching Translations

To download locale files from Transfiex:

const schemaBuilder = require('@ideditor/schema-builder');
schemaBuilder.fetchTranslations({
  outDirectory: 'dist',
  sourceLocale: 'en',
  translOrgId: 'openstreetmap',
  translProjectId: 'intrepid',
  translResourceIds: ['presets'],
  translReviewedOnly: ['de', 'es']
});

The following options are required:

The following options are optional:

Source Files

Your inDirectory folder (data by default) should contain your source files with this structure:

data/
    categories/
        category1.json
        category2.json
        ...
    fields/
        field1.json
        field2.json
        ...
    presets/
        preset1.json
        preset2.json
        ...
    defaults.json
    deprecated.json
    discarded.json

The format for each file is defined in the schemas directory.

Presets

A preset represents a specific type of map feature. For example, presets can exist for parks, restaurants, drinking water fountains, buildings, railway tracks, and many more feature types.

iD editor preset and field types are defined in JSON files located under the data/presets folder.

Preset Files

Presets are defined in JSON files located under data/presets. They're organized in a directory hierarchy based on OSM key/value pairs. For example, the preset that matches the tag leisure=park is in the file data/presets/leisure/park.json.

Preset Schema

A basic preset is of the form:

{
    // Display name for this feature type in the `sourceLocale` language.
    "name": "Produce Stand",
    // Aliases are synonyms of the preset's name - this is for alternative
    // names a preset might also be known as
    "aliases": [
        "Farm Shop",
        "Farm Stand"
    ]
    // Terms are additional search terms for the preset - these are added to
    // fuel the search functionality. searching for 'vegetables' will bring
    // up this 'farm shop' preset
    "terms": [
        "fresh food",
        "fruits",
        "greengrocer",
        "orchard",
        "organics",
        "vegetables"
    ],
    // Tags that are added to the feature when selecting the preset,
    // and also used to match the preset against existing features.
    // You can use the value "*" to match any value.
    "tags": {
        "shop": "farm"
    },
    // The geometry types for which this preset is valid.
    // options are point, area, line, and vertex.
    // vertices are points that are parts of lines, like the nodes in a road
    // lines are unclosed ways, and areas are closed ways
    "geometry": [
        "point", "area"
    ]
    // The icon in iD which represents this feature.
    "icon": "maki-shop",
    // The names of fields that will appear by default in the editor sidebar.
    // See the fields documentation for details of what's valid here.
    "fields": [
        "{shop}",
        "organic"
    ],
    // The names of fields that the user can add manually. These will also
    // appear if the corresponding tags are present.
    "moreFields": [
        "produce"
    ]
}

The complete JSON schema for presets can be found in schemas/preset.json

Preset Properties

name

The primary name of the feature type.

Upon merging into the main branch, this is sent to Transifex for translating to other localizations. Changing the name of an existing preset will require it to be re-translated to all localizations.

A preset can optionally reference the label of another by using that preset's name contained in brackets, like {preset}. In which case the presets's terms and aliases are also automatically sourced from that other field. This is for example useful for regional presets which should get the same labels as the preset they are based on.

This property is required. There is no default.

aliases

A list of synonyms for the preset's name. These are alternative terms a preset might also be known as. For example, Port could be added as an alias to the Harbor preset. Terms which describe a specific sub-type of a preset should not be added as an alias (e.g. Barber Shop should not be added as an alias to the Hairdresser preset).

terms

A list of additional search terms or keywords for the preset. These might be names which describe a subset of the preset's features, or simply related terms a user might enter when searching for the preset.

geometry

An array of possible geometry types that a feature must have in order to match this preset.

Closed ways can be treated as both line or area geometry. If a preset allows both, iD will add an additional area=yes tag when choosing the preset for an area feature.

The geometry types should be listed in order of preference. For example, the preset for leisure=swimming_pool lists area before point.

This property is required. There is no default.

tags

An object with the "key": "value" tags a feature must have to match this preset. A "*" wildcard value can be set to have this preset match any value for that key.

A feature can only match one preset even if its tags and geometry could technically match more than one. iD will pick the best match based on matchScore, the number of tags, and the use of wildcard values.

This property is required. There is no default.

addTags

The tags that are added to the feature when selecting this preset. Defaults to tags. If needed, this property will typically be a superset of tags.

iD's validator will recommend that users add missing tags from addTags to matching features. For example, the Bridge preset has these properties:

    "tags": {
        "man_made": "bridge"
    },
    "addTags": {
        "man_made": "bridge",
        "layer": "1"
    },

When adding a feature with this preset, it will be given the tags man_made=bridge and layer=1. The user could then change layer to 3, for instance, and the feature would still match the preset because it still has man_made=bridge. If the user removes the layer tag altogether, iD will recommend adding it back with a value of 1.

removeTags

The tags that are removed from the feature when deselecting this preset. Defaults to addTags or if this is also not defined, to tags.

fields/moreFields

Both these properties are arrays of field paths (e.g. description or generator/type). fields are shown by default and moreFields are shown if manually added by the user or if a matching tag is present. Note that some fields have a prerequisiteTag property that limits when they will be shown.

A preset can reference the fields of another by using that preset's name contained in brackets, like {preset}. For example, {shop} in presets/shop/books.json references and extends the fields of presets/shop.json. When subfolders are used, the format is {shop/books} to reference the properties of the shop/books.json.

"fields": [
    "{shop}",
    "internet_access"
],
"moreFields": [
    "{shop}",
    "internet_access/fee",
    "internet_access/ssid"
],
"tags": {
    "shop": "books"
}

If fields or moreFields are not defined, the values of the preset's "parent" preset are used. For example, shop/convenience automatically uses the same fields as shop.

In both explicit and implicit inheritance, fields for keys that define the preset via tags are generally not inherited, even when specified by the parent explicity. E.g. the shop field is not inherited by shop/… presets. This can be overwritten by adding the field explicitly like "fields": [ "shop", "{shop}" ],

icon

An icon representing a preset, e.g. "icon": "temaki-power_tower" (Example). More information about available icon sets and usage of icons can be found on the icons subpage.

imageURL

The URL of a remote image file. This does not fully replace icon—both may be shown in the UI.

For example, imageURL is used to specify the logos of brand presets from the name-suggestion-index.

Bitmap images should be at least 100×100 px² to look good on high-resolution screens.

searchable

Deprecated or generic presets can include the property "searchable": false. This means that they will be recognized by iD when editing existing data, but will not be available as an option when adding new features.

By convention, unsearchable presets have filenames that begin with an underscore (e.g. data/presets/landuse/_farm.json)

matchScore

A number that ranks this preset against others that match the feature.

For example, a feature with amenity=cafe and building=commercial will match the Cafe preset instead of the Commercial Building preset because Commercial Building has a lower matchScore.

The default is 1.0.

locationSet

An object with the identifiers of regions where this preset should or shouldn't be shown. By default, presets are available everywhere.

See the location-conflation package for details.

"locationSet": {
    "include": ["US"],
    "exclude": ["PR", "VI"]
}
replacement

The ID of a preset that is preferable to this one. iD's validator will flag features matching this preset and recommend that the user upgrade the tags.

When possible, use deprecated.json instead to specify upgrade paths for old tags. This property is meant for special cases, such as upgrades with geometry requirements.

reference

A key and optionally a value to link to the wiki documentation for this preset. Only necessary if the preset consists of several tags.

For example,

"reference": {
    "key": "tower:type",
    "value": "communication"
}

Fields

Fields are reusable form elements that can be associated with presets.

Field Files

Fields are defined in JSON files located under data/fields.

The field files are typically named according to their associated OSM key. For example, the field for the tag sport=* is stored in the file data/fields/sport.json. When a field has multiple versions that depend on which preset is active, we add a suffix to the filename: (sport.json, sport_ice.json, sport_racing_motor.json).

Some keys in OSM are namespaced using colons (':'). Namespaced fields are nested in folders according to their tag. For example, the field for the tag piste:difficulty=* is stored in the file data/fields/piste/difficulty.json.

Field Schema

{
    "key": "cuisine",
    "type": "combo",
    "label": "Cuisine"
}

The complete JSON schema for fields can be found in schemas/field.json

Field Properties

label

A sort desciption or caption of the field.

A field can optionally reference the label of another by using that field's name contained in brackets, like {field}. In which case the field's terms are also automatically sourced from that other field. This is for example useful when there are multiple variants of fields for the same tag, which should all have the same labels.

type

A string specifying the UI and behavior of the field. Must be one of the following values.

Text fields
Combo/Dropdown fields
Checkboxes
Radio Buttons
Special
usage

A string specifying how iD uses the field. Must be one of the following values.

key/keys

The key property names the OSM tag key that the field will edit. Some fields, like the address field, operate on more than one tag: These expect an array of keys in the keys property. The following table lists which field types accept which properties:

field typekeykeysdescriptionexample
text, number, email, url, tel:heavy_check_mark:optionalOptionally, these fields can match multiple tag keys of an OSM object: which is useful to support OSM tags which have more than one established tag key like phone and contact:phone.1"key": "phone", "keys": ["phone", "contact:phone"]
address:heavy_check_mark::heavy_check_mark:keys must contains all possible subtags to be used in the address field and key must contain the tag key prefix (e.g. addr)."key": "addr", "keys": ["addr:city", "addr:street", …]
wikipedia, wikidata:heavy_check_mark::heavy_check_mark:As the values of these two fields should be updated in sync by the editor, the keys should always contain both the respective wikipedia and wikidata keys."key": "flag:wikidata", "keys": ["flag:wikidata", "flag:wikipedia"]
directionalCombo:heavy_check_mark::heavy_check_mark:For directional fields, the key is the tag to use when the OSM feature has the same attributes in both directions, while the keys are the two tags for the individual directions."key": "cycleway", "keys": ["cycleway:right", "cycleway:left"]
access:x::heavy_check_mark:keys lists all access tags to consider in the field."keys": ["access", "foot", "bicycle", …]
localized:heavy_check_mark::x:key specified the main tag, which will also be used as the tag key prefix for localized versions of the tag (i.e. the name field will also display contents of the tags name:*)."key": "name"
multiCombo:heavy_check_mark::x:This field allows to toggle multiple yes/no subtags which share a common tag prefix specified in the field's key."key": "recycling:"
manyCombo:x::heavy_check_mark:Similar to the multiCombo field, but here the keys property contains the full list of OSM tag keys which the options of the field should correspond to."keys": ["hiking", "bicycle", …]
structureRadio:x::heavy_check_mark:Like the radio field, but operates on multiple tags: Selecting an option will remove the tag for the previously active option."keys": ["bridge", "tunnel", …]
restrictions:x::x:A special field which does not operate on tags, therefore does not need key or keys.
all other fields:heavy_check_mark::x:A regular field which only operates on a single tag."key": "oneway"
universal

If a field definition contains the property "universal": true, this field will appear in the "Add Field" list for all presets

geometry

If specified, only show the field for this kind of geometry. Should contain one of point, vertex, line, area.

default

The default value for the field. For example, the building_area.json field will automatically add the tag building=yes to certain presets that are associated with building features (but only if drawn as a closed area).

{
    "key": "building",
    "type": "combo",
    "default": "yes",
    "geometry": "area",
    "label": "Building"
}
placeholder

The text which should be shown in a field's input box when no value has been entered yet. This text is shown as a grayed-out text and can be used to give the user some examples of what to enter in the respective field.

A field can optionally reference the placeholder text of another by using that field's name contained in brackets, like {field}. In which case the field's terms are also automatically sourced from that other field. This is for example useful when there are multiple variants of fields for the same tag, which should all have the same labels.

options

Combo field types can provide dropdown values in an options array. The user can pick from any of the options, or type their own value.

{
    "key": "diaper",
    "type": "combo",
    "label": "Diaper Changing Available",
    "options": ["yes", "no", "room", "1", "2", "3", "4", "5"]
}
strings

The strings object contains values that the field wants to be translated on Transifex.

Combo field types can accept key-label pairs in the options value of the strings property. These values populate the options property if it isn't otherwise specified. If autoSuggestions is true (as per default), then raw and labeled values might be mixed in the dropdown suggestions.

{
    "key": "smoothness",
    "type": "combo",
    "label": "Smoothness",
    "placeholder": "Thin Rollers, Wheels, Off-Road...",
    "strings": {
        "options": {
            "excellent": "Thin Rollers: rollerblade, skateboard",
            "good": "Thin Wheels: racing bike",
            "intermediate": "Wheels: city bike, wheelchair, scooter",
            "bad": "Robust Wheels: trekking bike, car, rickshaw",
            "very_bad": "High Clearance: light duty off-road vehicle",
            "horrible": "Off-Road: heavy duty off-road vehicle",
            "very_horrible": "Specialized off-road: tractor, ATV",
            "impassable": "Impassable / No wheeled vehicle"
        }
    }
}

Checkbox field tyes use the options keys to specify the values of the OSM tag corresponding to the different states of the checkbox input element, in the following order:

  1. fields of type check: unset state (must use the option undefined), checked state, unchecked state (example)
  2. fields of type defaultCheck: unchecked state (must use the option undefined), checked state (example)
stringsCrossReference

An optional property to reference to the strings of another field, indicated by using that field's name contained in brackets, like {field}. This is for example useful when there are multiple variants of fields for the same tag, which should all use the same strings.

autoSuggestions

For combo fields, the most common tag values will be fetched from TagInfo and shown in the dropdown list if autoSuggestions is true. The default is true.

customValues

For combo fields, the user can type a custom value in addition to choosing any shown in the dropdown list if customValues is true. The default is true.

snake_case

For combo fields, spaces are replaced with underscores in the tag value if snake_case is true. The default is true.

caseSensitive

For combo fields, case-sensitive field values are allowed if caseSensitive is true. The default is false.

minValue

For number fields, the lowest valid value. There is no default.

maxValue

For number fields, the greatest valid value. There is no default.

increment

For number fields, the amount the stepper control increases or decreases the value. The default is 1.

prerequisiteTag

An object defining the tags the feature needs before this field will be displayed. It may have this property:

And may optionally be combined with one of these properties:

Alternatively, the object may contain a single property:

For example, this is how we show the Internet Access Fee field only if the feature has an internet_access tag not equal to no.

"prerequisiteTag": {
    "key": "internet_access",
    "valueNot": "no"
}

If a feature has a value for this field's key or keys, it will display regardless of the prerequisiteTag property.

locationSet

An object with the identifiers of regions where this field should or shouldn't be shown. By default, fields are available everywhere.

See the location-conflation package for details.

"locationSet": {
    "include": ["US"],
    "exclude": ["PR", "VI"]
}
urlFormat

For identifier fields, the permalink URL of the external record. It must contain a {value} placeholder where the tag value will be inserted. For example:

"urlFormat": "https://geonames.usgs.gov/apex/f?p=gnispq:3:::NO::P3_FID:{value}"
pattern

For identifier fields, the regular expression that valid values are expected to match to be linkable.

icons

For combo fields, the icons object might contain the name of icons which represent the different values of the field. More information about available icon sets and usage of icons can be found on the icons subpage.

Combo field types can accept key-label pairs in the options value of the strings property.

{
    "key": "crossing:markings",
    "type": "combo",
    "label": "Crossing Markings",
    "icons": {
        "zebra": "iD-crossing_markings-zebra",
        "lines": "iD-crossing_markings-lines",
        …
    }
}
iconsCrossReference

An optional property to reference to the icons of another field, indicated by using that field's name contained in brackets, like {field}. This is for example useful when there are multiple variants of fields for the same tag, which should all use the same icons.

Deprecations

Use deprecated.json (Example, Schema) to specify tag deprecations.

Usage example: iD Editor will show an information panel that informs users about deprecated tags and an update-tag-action.

Example: Default Case

To update a specific tag to a specific new tag

  {
    "old": {"foo": "value"},
    "replace": {"bar": "value"}
  },

Example: Change the key, keep the value

  {
    "old": {"foo": "*"},
    "replace": {"bar": "$1"}
  },

Example: Delete a tag

  {
    "old": {"content": "unknown"}
  },

Contributing

iD's code of conduct and privacy policy also apply to this project.

Footnotes

  1. The intended behaviour of a field with alternative keys is the following: If an OSM feature does not yet have a tag of the given keys, the supplied key will be used; if a feature has a single tag which matches a key from the keys, it should be used by the field; if a feature has multiple tags matching a key from the keys alternatives, the field should update them simultaneously and display a multiple/conflicting values message if necessary. ↩