权限没有,则隐藏 function forum_list_access_filter($forumlist, $gid, $allow = 'allowread') { global $grouplist; if (empty($forumlist)) return array(); if (1 == $gid) return $forumlist; $forumlist_filter = $forumlist; $group = $grouplist[$gid]; foreach ($forumlist_filter as $fid => $forum) { if (empty($forum['accesson']) && empty($group[$allow]) || !empty($forum['accesson']) && empty($forum['accesslist'][$gid][$allow])) { unset($forumlist_filter[$fid]); } unset($forumlist_filter[$fid]['accesslist']); } return $forumlist_filter; } function forum_filter_moduid($moduids) { $moduids = trim($moduids); if (empty($moduids)) return ''; $arr = explode(',', $moduids); $r = array(); foreach ($arr as $_uid) { $_uid = intval($_uid); $_user = user_read($_uid); if (empty($_user)) continue; if ($_user['gid'] > 4) continue; $r[] = $_uid; } return implode(',', $r); } function forum_safe_info($forum) { //unset($forum['moduids']); return $forum; } function forum_filter($forumlist) { foreach ($forumlist as &$val) { unset($val['brief'], $val['announcement'], $val['seo_title'], $val['seo_keywords'], $val['create_date_fmt'], $val['icon_url'], $val['modlist']); } return $forumlist; } function forum_format_url($forum) { global $conf; if (0 == $forum['category']) { // 列表URL $url = url('list-' . $forum['fid'], '', FALSE); } elseif (1 == $forum['category']) { // 频道 $url = url('category-' . $forum['fid'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = url('read-' . trim($forum['brief']), '', FALSE); } if ($conf['url_rewrite_on'] > 1 && $forum['well_alias']) { if (0 == $forum['category'] || 1 == $forum['category']) { $url = url($forum['well_alias'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = ($forum['threads'] && $forum['brief']) ? url($forum['well_alias'] . '-' . trim($forum['brief']), '', FALSE) : url($forum['well_alias'], '', FALSE); } } return $url; } function well_forum_alias() { $forumlist = forum_list_cache(); if (empty($forumlist)) return ''; $key = 'forum-alias'; static $cache = array(); if (isset($cache[$key])) return $cache[$key]; $cache[$key] = array(); foreach ($forumlist as $val) { if ($val['well_alias']) $cache[$key][$val['fid']] = $val['well_alias']; } return array_flip($cache[$key]); } function well_forum_alias_cache() { global $conf; $key = 'forum-alias-cache'; static $cache = array(); // 用静态变量只能在当前 request 生命周期缓存,跨进程需要再加一层缓存:redis/memcached/xcache/apc if (isset($cache[$key])) return $cache[$key]; if ('mysql' == $conf['cache']['type']) { $arr = well_forum_alias(); } else { $arr = cache_get($key); if (NULL === $arr) { $arr = well_forum_alias(); !empty($arr) AND cache_set($key, $arr); } } $cache[$key] = empty($arr) ? '' : $arr; return $cache[$key]; } ?>javascript - Adding debounce to mobx function - Stack Overflow
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javascript - Adding debounce to mobx function - Stack Overflow

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I am creating a React App that makes search request to server as the user types. I want to debounce this search request, but not sure how to implement it in my existing code:

Mobx Store:

// function which initiates a fetch request to server
@action searchPlanet = async (event) => {
            this.searchString = event.target.value;
            this.planets = await getPlanets(this.searchString);
        }

React Component calling searchPlanet:

const Search = observer(({ store }) => {
    const planetList = toJS(store.planets);
    return (
        <div>
            <div className={style.search_container}>
                <input type="text" id="search" onChange={e => store.searchPlanet(e)} value={store.searchString} placeholder="search planet" />
            </div>
        </div>
    )
})

I can't use debounce function directly on onChange because that will also delay the re-rendering of Search ponent, so the user will see the typed text after some time. But I am not able to figure out to how to implement debounce function in my store? I can do something like:

import _ from lodash

@action searchPlanet = async (event) => {
            this.searchString = event.target.value;
            this.planets = await getPlanets(this.searchString);
        }

debounceSearch = _.debounce(this.searchPlanet, 250);

The issue with this is that I can't call debounceSearch directly from Search ponent because of reason mentioned above. But I want to debounce getPlanets function, which returns a promise (I am not sure if Lodash debounce function can return the promise returned by the wrapped function)?

I am creating a React App that makes search request to server as the user types. I want to debounce this search request, but not sure how to implement it in my existing code:

Mobx Store:

// function which initiates a fetch request to server
@action searchPlanet = async (event) => {
            this.searchString = event.target.value;
            this.planets = await getPlanets(this.searchString);
        }

React Component calling searchPlanet:

const Search = observer(({ store }) => {
    const planetList = toJS(store.planets);
    return (
        <div>
            <div className={style.search_container}>
                <input type="text" id="search" onChange={e => store.searchPlanet(e)} value={store.searchString} placeholder="search planet" />
            </div>
        </div>
    )
})

I can't use debounce function directly on onChange because that will also delay the re-rendering of Search ponent, so the user will see the typed text after some time. But I am not able to figure out to how to implement debounce function in my store? I can do something like:

import _ from lodash

@action searchPlanet = async (event) => {
            this.searchString = event.target.value;
            this.planets = await getPlanets(this.searchString);
        }

debounceSearch = _.debounce(this.searchPlanet, 250);

The issue with this is that I can't call debounceSearch directly from Search ponent because of reason mentioned above. But I want to debounce getPlanets function, which returns a promise (I am not sure if Lodash debounce function can return the promise returned by the wrapped function)?

Share Improve this question edited Jun 22, 2018 at 16:14 darKnight asked Jun 22, 2018 at 15:29 darKnightdarKnight 6,48115 gold badges58 silver badges93 bronze badges
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1 Answer 1

Reset to default 7

Instead of assigning a value to planets in your searchPlanet action, you could do it in the debounced function instead.

Example

@observer
class App extends Component {
  @observable value = "";
  @observable query = "";

  onChange = action(event => {
    const { value } = event.target;
    this.value = value;
    this.search(value);
  });

  search = debounce(action(query => {
    this.query = query;
  }), 250);

  render() {
    const { value, query, onChange } = this;
    return (
      <div>
        <input value={value} onChange={onChange} />
        <div>{query}</div>
      </div>
    );
  }
}
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