rendering

Customize the rendering of a choice/entity field in Symfony2

余生颓废 提交于 2020-11-30 12:03:05
问题 I would like a <select> element to be rendered with additional data on its <option> s. For the sake of example, I'd like to have a service-selector (non-multiple entity-field) that resets another inputs value upon selection change. I'm not interested in using JS data-structures, I need to have the rendered field to look as follows: <select name="..."> <option value="1" data-price="90">Service 1</option> <option value="2" data-price="40">Service 2</option> </select> I would take two different

Will using UUID to as list keys cause unnecessary re-renders in React?

ⅰ亾dé卋堺 提交于 2020-11-29 08:48:27
问题 I have a list of items that doesn't contain enough data to generate a unique key. If I use the uuid library to generate an ID, will a single item change also causes the other items to re-render since their key will change each time? const people = [ { gender: 'male', firstName: 'david', }, { gender: 'male', firstName: 'david', }, { gender: 'male', firstName: 'joe', }, ] const renderPeople = () => { return people.map(person => { return ( <div key={uuid.v4() /* a new value each time? */ }> <p>

Uncaught Invariant Violation on rendering search data

别来无恙 提交于 2020-08-25 07:08:23
问题 I am trying to implement search using React. I have 2 problems on my logic flow: To set input as Params To render the data I get from server While I'm playing with it, I have encountered the error message Uncaught Invariant Violation input is a void element tag and must not have children or use props.dangerouslySetInnerHTML . And this is my code: import React, { PropTypes } from 'react'; import withStyles from 'isomorphic-style-loader/lib/withStyles'; import s from './Home.scss'; import AWS

React useContext() performance, useContext inside custom hook

可紊 提交于 2020-08-19 08:38:28
问题 I used a structure using React Hooks. It is based on a global Context that contains a combination of reducers (as in the Redux). Also, I widely use custom hooks to separate logic. I have a hook that contains asynchronous API requests and it has become quite cumbersome and I have the opportunity to split almost every function of this hook into other hooks, but each of these functions uses a global context (more precisely - dispatch from useReducer()). So, questions: Is it ok to use useContext(