Remove old service architecture from Vue docs

doc/development/fe_guide/vue.md

@@ -2,27 +2,24 @@
 
 To get started with Vue, read through [their documentation][vue-docs].
 
-## Vue architecture
+## Examples
 
-All new features built with Vue.js must follow a [Flux architecture][flux].
-The main goal we are trying to achieve is to have only one data flow and only one data entry.
-In order to achieve this goal, you can either use [vuex](#vuex) or use the [store pattern][state-management], explained below:
+What is described in the following sections can be found in these examples:
 
-Each Vue bundle needs a Store - where we keep all the data -, a Service - that we use to communicate with the server - and a main Vue component.
+- web ide: https://gitlab.com/gitlab-org/gitlab-ce/tree/master/app/assets/javascripts/ide/stores
+- security products: https://gitlab.com/gitlab-org/gitlab-ee/tree/master/ee/app/assets/javascripts/vue_shared/security_reports
+- registry: https://gitlab.com/gitlab-org/gitlab-ce/tree/master/app/assets/javascripts/registry/stores
 
-Think of the Main Vue Component as the entry point of your application. This is the only smart
-component that should exist in each Vue feature.
-This component is responsible for:
-1. Calling the Service to get data from the server
-1. Calling the Store to store the data received
-1. Mounting all the other components
+## Vue architecture
 
-![Vue Architecture](img/vue_arch.png)
+All new features built with Vue.js must follow a [Flux architecture][flux].
+The main goal we are trying to achieve is to have only one data flow and only one data entry.
+In order to achieve this goal we use [vuex](#vuex).
 
 You can also read about this architecture in vue docs about [state management][state-management]
 and about [one way data flow][one-way-data-flow].
 
-### Components, Stores and Services
+### Components and Store
 
 In some features implemented with Vue.js, like the [issue board][issue-boards]
 or [environments table][environments-table]
@@ -33,10 +30,8 @@ new_feature
 ├── components
 │   └── component.vue
 │   └── ...
-├── stores
+├── store
 │  └── new_feature_store.js
-├── services # only when not using vuex
-│  └── new_feature_service.js
 ├── index.js
 ```
 _For consistency purposes, we recommend you to follow the same structure._
@@ -125,217 +120,6 @@ You can read more about components in Vue.js site, [Component System][component-
 #### Vuex
 Check this [page](vuex.md) for more details.
 
-#### Flux like state management
-The Store is a class that allows us to manage the state in a single
-source of truth. It is not aware of the service or the components.
-
-The concept we are trying to follow is better explained by Vue documentation
-itself, please read this guide: [State Management][state-management]
-
-### A folder for the Service
-
-**If you are using Vuex you won't need this step**
-
-The Service is a class used only to communicate with the server.
-It does not store or manipulate any data. It is not aware of the store or the components.
-We use [axios][axios] to communicate with the server.
-Refer to [axios](axios.md) for more details.
-
-Axios instance should only be imported in the service file.
-
-```javascript
-import axios from '~/lib/utils/axios_utils';
-```
-
-### End Result
-
-The following example shows an application:
-
-```javascript
-// store.js
-export default class Store {
-
-  /**
-   * This is where we will iniatialize the state of our data.
-   * Usually in a small SPA you don't need any options when starting the store.
-   * In that case you do need guarantee it's an Object and it's documented.
-   *
-   * @param  {Object} options
-   */
-  constructor(options) {
-    this.options = options;
-
-    // Create a state object to handle all our data in the same place
-    this.todos = [];
-  }
-
-  setTodos(todos = []) {
-    this.todos = todos;
-  }
-
-  addTodo(todo) {
-    this.todos.push(todo);
-  }
-
-  removeTodo(todoID) {
-    const state = this.todos;
-
-    const newState = state.filter((element) => {element.id !== todoID});
-
-    this.todos = newState;
-  }
-}
-
-// service.js
-import axios from '~/lib/utils/axios_utils'
-
-export default class Service {
-  constructor(options) {
-    this.todos = axios.create({
-      baseURL: endpoint.todosEndpoint
-    });
-
-  }
-
-  getTodos() {
-    return this.todos.get();
-  }
-
-  addTodo(todo) {
-    return this.todos.put(todo);
-  }
-}
-// todo_component.vue
-<script>
-export default {
-  props: {
-    data: {
-      type: Object,
-      required: true,
-    },
-  },
-};
-</script>
-<template>
-  <div>
-    <h1>
-      Title: {{data.title}}
-    </h1>
-    <p>
-      {{data.text}}
-    </p>
-  </div>
-</template>
-
-// todos_main_component.vue
-<script>
-import Store from 'store';
-import Service from 'service';
-import TodoComponent from 'todoComponent';
-export default {
-  components: {
-    todo: TodoComponent,
-  },
-  /**
-   * Although most data belongs in the store, each component it's own state.
-   * We want to show a loading spinner while we are fetching the todos, this state belong
-   * in the component.
-   *
-   * We need to access the store methods through all methods of our component.
-   * We need to access the state of our store.
-   */
-  data() {
-    const store = new Store();
-
-    return {
-      isLoading: false,
-      store: store,
-      todos: store.todos,
-    };
-  },
-
-  created() {
-    this.service = new Service('/todos');
-
-    this.getTodos();
-  },
-
-  methods: {
-    getTodos() {
-      this.isLoading = true;
-
-      this.service
-        .getTodos()
-        .then(response => {
-          this.store.setTodos(response);
-          this.isLoading = false;
-        })
-        .catch(() => {
-          this.isLoading = false;
-          // Show an error
-        });
-    },
-
-    addTodo(event) {
-      this.service
-        .addTodo({
-          title: 'New entry',
-          text: `You clicked on ${event.target.tagName}`,
-        })
-        .then(response => {
-          this.store.addTodo(response);
-        })
-        .catch(() => {
-          // Show an error
-        });
-    },
-  },
-};
-</script>
-<template>
-  <div class="container">
-    <div v-if="isLoading">
-      <i
-        class="fa fa-spin fa-spinner"
-        aria-hidden="true" />
-    </div>
-
-    <div
-      v-if="!isLoading"
-      class="js-todo-list">
-      <template v-for='todo in todos'>
-        <todo :data="todo" />
-      </template>
-
-      <button
-        @click="addTodo"
-        class="js-add-todo">
-        Add Todo
-      </button>
-    </div>
-  <div>
-</template>
-
-// index.js
-import todoComponent from 'todos_main_component.vue';
-
-new Vue({
-  el: '.js-todo-app',
-  components: {
-    todoComponent,
-  },
-  render: createElement => createElement('todo-component' {
-    props: {
-      someProp: [],
-    }
-  }),
-});
-
-```
-
-The [issue boards service][issue-boards-service]
-is a good example of this pattern.
-
 ## Style guide
 
 Please refer to the Vue section of our [style guide](style_guide_js.md#vue-js)
@@ -446,6 +230,5 @@ need to test the rendered output. [Vue][vue-test] guide's to unit test show us e
 [state-management]: https://vuejs.org/v2/guide/state-management.html#Simple-State-Management-from-Scratch
 [one-way-data-flow]: https://vuejs.org/v2/guide/components.html#One-Way-Data-Flow
 [vue-test]: https://vuejs.org/v2/guide/unit-testing.html
-[issue-boards-service]: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/javascripts/boards/services/board_service.js.es6
 [flux]: https://facebook.github.io/flux
 [axios]: https://github.com/axios/axios