Cannot add an object to a state tree if it is already part of the same or another state tree. #229
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mobx-state-tree: 0.9.0
node: 8.0.0
const {types} = require('mobx-state-tree')
const Model = types.model({
a: types.model({b: types.string}),
c: types.string // string
})
const Store = types.model({
one: Model,
index: types.array(Model)
}, {
set (one) {
this.one = one
},
push (model) {
this.index.push(model)
}
})
const object = {
a: {b: 'string'}, // object
c: new Date().toString() // string
}
const instance = Store.create({
one: object,
index: [object]
})
instance.set(object)
instance.push(object) // ok↑ Even if the same object exists in the state tree, It works.
const {types} = require('mobx-state-tree')
const Model = types.model({
a: types.model({b: types.string}),
c: types.Date // types.string -> types.Date
})
const Store = types.model({
one: Model,
index: types.array(Model)
}, {
set (one) {
this.one = one
},
push (model) {
this.index.push(model)
}
})
const object = {
a: {b: 'string'},
c: new Date() // string -> date (number)
}
const instance = Store.create({
one: object,
index: [object]
})
instance.set(object)
instance.push(object) // error↑ I changed types.string to types.Date, and I received an error.
Cannot add an object to a state tree if it is already part of the same or another state tree. Tried to assign an object to '/index/0/c', but it lives already at '/one/c'
What rules exist?
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