mixins

问题 I've mapped chartData to a state property using vuex. What I'd like to do is update the chart when a dataset is updated. I have heard that it can be done with mixins or watchers but I don't know how to implement it. I understand that mixins creates a watcher but I don't know how it is used within vuex. Chartline.vue: <script> import { Line } from 'vue-chartjs' import { mapState } from 'vuex' export default { name: 'ChartLine', extends: Line, computed:{ ...mapState(['charData','options']) },

问题 I'm currently learning how to develop an app with Vuejs. I have a main.js file with the code for setting up Vue.js. I created a new directory /mixins with a new file api.js. I want to use that as mixin so that every component can use a function to access my api. But I don't know how to do it. This is my /mixins/api.js file: export default{ callapi() { alert('code to call an api'); }, }; This is my main.js file: import Vue from 'vue'; import VueRouter from 'vue-router'; import VueResource from

问题 I have the following JSON-file: { "Primary": { "mixin": "primary", "color": "red" }, "Secondary": { "mixin": "secondary", "color": "blue" } } ...that I want to parse and dynamically create mixins off of it. Inspired by https://stackoverflow.com/a/35127312/2000741 I tried the following: colors = json('./colors.json', { hash: true }) for entry in colors mixin = scale[entry]["mixin"] value = scale[entry]["color"] // FIXME: Hack to cast mixin-name to string -> is there a better way? define("" +

问题 I am trying to implement staff_member_required mixins: Here are the two ways I found on how to do so: First: class StaffRequiredMixin(object): @method_decorator(login_required) def dispatch(self, request, *args, **kwargs): if not request.user.is_staff: messages.error( request, 'You do not have the permission required to perform the ' 'requested operation.') return redirect(settings.LOGIN_URL) return super(StaffRequiredMixin, self).dispatch(request, *args, **kwargs) Second: class

问题 Our application has set of complex form wizards. To avoid code duplication I created several mixins. The problem is that PyCharm highlights mixin methods with Unresolved attribute refference error. This is correct as object does not have such methods. But I know that this mixin will be used only with special classes. Is there any way to tell this info to PyCharm? For now I use such approach: class MyMixin(object): def get_context_data(self, **kwargs): assert isinstance(self,

问题 Under multiple inheritance, where the child always inherits from Mixin and some type of Thing , how do I get a method in Mixin to enable the child to return instances of the parent Thing ? The following code works by directly calling into the Method Resolution Order graph, but seems unpythonic. Is there a better way? class Thing1(object): def __init__(self, x=None): self.x = x class Thing2(object): def __init__(self, x=None): self.x = 2*x ... class Mixin(object): def __init__(self, numbers=(1

问题 This is a follow up question to Using JavaScript Class Mixins with TypeScript Declaration Files Given a JavaScript Mixin: export function Mixin(superclass) { return class Consumer extends superclass { connectedCallback() { super.connectedCallback && super.connectedCallback(); this.mo = new MutationObserver(console.log) this.mo.observe(this) } classMethod() { return true } } } And a TypeScript declaration file: export declare class Consumer extends HTMLElement { public classMethod(): boolean }

问题 This is a follow up question to Using JavaScript Class Mixins with TypeScript Declaration Files Given a JavaScript Mixin: export function Mixin(superclass) { return class Consumer extends superclass { connectedCallback() { super.connectedCallback && super.connectedCallback(); this.mo = new MutationObserver(console.log) this.mo.observe(this) } classMethod() { return true } } } And a TypeScript declaration file: export declare class Consumer extends HTMLElement { public classMethod(): boolean }

问题 We'd like to define mixin classes in regular .js files using jsDoc comments instead of .ts files. An important aspect of mixin classes is constraining the generic type parameter to a class constructor using extends . E.g., the above page has the following TypeScript: type Constructor<T> = new(...args: any[]) => T; function Tagged<T extends Constructor<{}>>(Base: T) { ... } TypeScript's jsDoc support allows for a @template T declaration, but we don't see any way to constrain T to, for example,

问题 i recently converted my vuejs to typescript base, but now i have problem with using mixin in typescript. i used two types of mixin, but none worked for me and it shows error ts2339, and i couldnt found the solution on https://vuejs.org/v2/guide/typescript.html#Basic-Usage: first one: //mixin.ts import {ViewState} from "@/types"; import {mocked_view_state} from "@/api/mock/profile.device.group.mock"; export const ProfileDeviceGroup = { methods: { resetViewState(): ViewState { return mocked