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[英]Does Ember CLI Mirage store data in a database? or the posted data gets removed after refreshing the browser?
[英]Mirage server GETs data but POST fails
我有海市蜃樓模型:
// mirage/models/country.js
import { Model, belongsTo, hasMany } from 'miragejs';
export default Model.extend({
name: '',
iso3166_1_alpha3: '',
capitol_city: belongsTo('city', {inverse: null}),
cities: hasMany('city', {inverse: 'country'})
});
和:
// mirage/models/city.js
import { Model, belongsTo } from 'miragejs';
export default Model.extend({
name: '',
country: belongsTo('country', {inverse: 'cities'})
});
和序列化器:
// mirage/serializers/application.js
import { camelize, capitalize, underscore } from '@ember/string';
import { JSONAPISerializer } from 'miragejs';
export default class ApplicationSerializer extends JSONAPISerializer
{
alwaysIncludeLinkageData = true;
keyForAttribute(attr) {
return underscore(attr);
};
keyForRelationship(modelName) {
return underscore(modelName);
};
typeKeyForModel(model) {
return capitalize(camelize(model.modelName));
};
};
當我運行測試時:
import { module, test } from 'qunit';
import { setupTest } from 'ember-qunit';
import { setupMirage } from 'ember-cli-mirage/test-support';
module('Unit | Mirage | mirage models', function (hooks) {
setupTest(hooks);
setupMirage(hooks);
test('it retrieves the country', async function (assert) {
const server = this.server;
let city = server.create('city', { id: '1', name: 'Paris' });
server.create(
'country',
{
id: 'FR',
name: 'France',
iso3166_1_alpha3: 'FRA',
capitol_city: city
}
);
let response = await fetch('/api/countries')
assert.strictEqual(response.status, 200, "Should have created the model");
let json = await response.json();
assert.deepEqual(
json,
{
data: [
{
type: 'Country',
id: 'FR',
attributes: {
name: 'France',
iso3166_1_alpha3: 'FRA',
},
relationships: {
capitol_city: {data: {type: 'City', id: '1'}},
cities: {data: []},
}
}
]
}
)
});
test('it creates the country', async function (assert) {
const server = this.server;
server.create('city', { id: '1', name: 'Paris' });
let response = await fetch(
'/api/countries',
{
method: 'POST',
headers: {'Countent-Type': 'application/json'},
body: JSON.stringify(
{
data: {
id: 'FR',
type: 'Country',
attributes: {
iso3166_1_alpha3: 'FRA',
name: 'France',
},
relationships: {
capitol_city: { data: { type: 'City', id: '1'} },
cities: { data: [{ type: 'City', id: '1'}] }
}
}
}
)
}
);
console.log((await response.json()).message);
assert.strictEqual(response.status, 201, "Should have created the model");
});
});
第一個通過,第二個失敗並顯示消息:
Mirage: You're passing the relationship 'capitol_city' to the 'country' model via a POST to '/api/countries', but you did not define the 'capitol_city' association on the 'country' model.
如何讓 Mirage 識別 model 上的capitol_city
屬性?
Mirage 在屬性格式方面固執己見,並希望屬性采用camelCase
式(而不是snake_case
)。
不幸的是, Ember CLI Mirage model 關系文檔沒有提到這種期望,所有示例都使用單詞屬性。 更不幸的是,對於簡單的GET
請求以及通過 API 直接創建模型時,Mirage 將使用snake_case
屬性; 只有當您向服務器發出POST
/ PUT
/ PATCH
a model 請求時,它才會失敗,並且消息將(令人困惑地)引用已定義的 snake case 屬性。 (有關失敗的地方,請參閱Mirage 源代碼。)
要解決它,請將屬性轉換為駝峰式大小寫:
// mirage/models/country.js
import { Model, belongsTo, hasMany } from 'miragejs';
export default Model.extend({
name: '',
iso31661Alpha3: 0,
capitolCity: belongsTo('city', {inverse: null}),
cities: hasMany('city', {inverse: 'country'})
});
並在測試中更改它:
import { module, test } from 'qunit';
import { setupTest } from 'ember-qunit';
import { setupMirage } from 'ember-cli-mirage/test-support';
module('Unit | Mirage | mirage models', function (hooks) {
setupTest(hooks);
setupMirage(hooks);
test('it retrieves the country', async function (assert) {
const server = (this as any).server;
let city = server.create('city', { id: '1', name: 'Paris' });
server.create(
'country',
{
id: 'FR',
name: 'France',
iso31661Alpha3: 'FRA',
capitolCity: city
}
);
let response = await fetch('/api/countries')
assert.strictEqual(response.status, 200, "Should have created the model");
let json = await response.json();
console.log(JSON.stringify(json));
assert.deepEqual(
json,
{
data: [
{
type: 'Country',
id: 'FR',
attributes: {
name: 'France',
iso3166_1_alpha3: 'FRA',
},
relationships: {
capitol_city: {data: {type: 'City', id: '1'}},
cities: {data: []},
}
}
]
}
)
});
test('it creates the country', async function (assert) {
const server = (this as any).server;
let city = server.create('city', { id: '1', name: 'Paris' });
let response = await fetch(
'/api/countries',
{
method: 'POST',
headers: {'Countent-Type': 'application/json'},
body: JSON.stringify(
{
data: {
id: 'FR',
type: 'Country',
attributes: {
iso3166_1_alpha3: 'FRA',
name: 'France',
},
relationships: {
capitol_city: { data: { type: 'City', id: '1'} },
cities: { data: [{ type: 'City', id: '1'}] }
}
}
}
)
}
);
console.log((await response.json()).message);
assert.strictEqual(response.status, 201, "Should have created the model");
});
});
但是,一旦將其轉換為駝峰式大小寫,屬性iso31661Alpha3
就無法在 output 中正確格式化,因此您必須手動更改國家/地區 model 的序列化程序:
// mirage/serializers/country.js
import ApplicationSerializer from './application';
export default class CountrySerializer extends ApplicationSerializer
{
keyForAttribute(attr: string) {
switch(attr)
{
case 'iso31661Alpha3': return 'iso3166_1_alpha3';
default: return super.keyForAttribute(attr);
}
};
};
一旦屬性大小寫正確,它就會起作用。
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