JonnyBGod / Loopback Include Through Mixin
Licence: mit
A mixin to enable including Through model properties
Stars: ✭ 15
Programming Languages
javascript
184084 projects - #8 most used programming language
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loopback-include-through-mixin
Features
- include though model properties with queries
- setup default bahavior
- use as mixin
Installation
npm install loopback-include-through-mixin --save
How to use
Add the mixins property to your server/model-config.json like the following:
{
"_meta": {
"sources": [
"loopback/common/models",
"loopback/server/models",
"../common/models",
"./models"
],
"mixins": [
"loopback/common/mixins",
"../node_modules/loopback-include-through-mixin",
"../common/mixins"
]
}
}
or
{
"_meta": {
"sources": [
"loopback/common/models",
"loopback/server/models",
"../common/models",
"./models"
],
"mixins": [
"loopback/common/mixins",
"loopback-include-through-mixin/lib",
"../common/mixins"
]
}
}
To use with your Models add the mixins attribute to the definition object of your model config.
{
"name": "app",
"properties": {
"name": {
"type": "string",
}
},
"relations": {
"users": {
"type": "hasMany",
"model": "user",
"foreignKey": "appId",
"through": "userRole"
}
},
"mixins": {
"IncludeThrough": true,
}
}
Then use in you queries like:
{
"where": "...",
"include": "...",
"includeThrough": true
}
{
"where": "...",
"include": "...",
"includeThrough": {
"fields": "type"
}
}
You can also set default behavior in your model definition with options.
{
"name": "app",
"properties": {
"name": {
"type": "string",
}
},
"relations": {
"users": {
"type": "hasMany",
"model": "user",
"foreignKey": "appId",
"through": "userRole"
}
},
"mixins": {
"IncludeThrough": {
"relations": [
"users"
],
"fields": {
"users": "type"
}
},
}
}
Example of Through Model:
{
"name": "userRole",
"properties": {
"type": {
"type": "string",
"required": true,
"default": "owner",
"description": "owner | administrator | collaborator"
}
},
"validations": [],
"relations": {
"app": {
"type": "belongsTo",
"model": "app",
"foreignKey": "appId"
},
"user": {
"type": "belongsTo",
"model": "user",
"foreignKey": "userId"
}
}
}
Options
| option | type | description | required |
|---|---|---|---|
| relations | [String, Object] | select relations, can be object with property "name" and "asProperty" | false |
| relations[0].name | String | name of the relation | false |
| relations[0].asProperty | String | rename the property that through model will be injected to, default is name of the through model | false |
| fields | Key/Value Object | similar to filter fields. Key: relation; Value: fields filter. | false |
- By setting relations in model definition it will return the though model for the specified relations by default
- By passing includeThrough in you query filter it will override default fields
License
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