Backfill follow suggestions with fallback when not enough results. Cycling

through suggestions in UI
This commit is contained in:
Eugen Rochko 2016-10-16 17:04:13 +02:00
parent f9c9fef157
commit 4470330385
2 changed files with 65 additions and 23 deletions

View file

@ -6,7 +6,8 @@ import { Link } from 'react-router';
const outerStyle = {
marginBottom: '10px',
borderTop: '1px solid #616b86'
borderTop: '1px solid #616b86',
position: 'relative'
};
const headerStyle = {
@ -41,26 +42,64 @@ const acctStyle = {
textOverflow: 'ellipsis'
};
const nextStyle = {
fontWeight: '400',
color: '#2b90d9'
};
const SuggestionsBox = React.createClass({
propTypes: {
accounts: ImmutablePropTypes.list.isRequired
accounts: ImmutablePropTypes.list.isRequired,
perWindow: React.PropTypes.number
},
getInitialState () {
return {
index: 0
};
},
getDefaultProps () {
return {
perWindow: 2
};
},
mixins: [PureRenderMixin],
handleNextClick (e) {
e.preventDefault();
let newIndex = this.state.index + 1;
if (this.props.accounts.skip(this.props.perWindow * newIndex).size === 0) {
newIndex = 0;
}
this.setState({ index: newIndex });
},
render () {
const accounts = this.props.accounts.take(3);
const { accounts, perWindow } = this.props;
if (accounts.size === 0) {
return <div />;
}
let nextLink = '';
if (accounts.size > perWindow) {
nextLink = <a href='#' style={nextStyle} onClick={this.handleNextClick}>Next</a>;
}
return (
<div style={outerStyle}>
<strong style={headerStyle}>Who to follow</strong>
<strong style={headerStyle}>
Who to follow {nextLink}
</strong>
{accounts.map(account => {
{accounts.skip(perWindow * this.state.index).take(perWindow).map(account => {
let displayName = account.get('display_name');
if (displayName.length === 0) {

View file

@ -14,9 +14,17 @@ END
results = neo.execute_query(query, id: for_account_id, limit: limit)
return fallback(for_account_id, limit) if results.empty? || results['data'].empty?
if results.empty?
results = fallback(for_account_id, limit)
elsif results['data'].size < limit
results['data'] = (results['data'] + fallback(for_account_id, limit - results['data'].size)['data']).uniq
end
map_to_accounts(for_account_id, results)
account_ids = results['data'].map(&:first)
blocked_ids = Block.where(account_id: for_account_id).pluck(:target_account_id)
accounts_map = Account.where(id: account_ids - blocked_ids).map { |a| [a.id, a] }.to_h
account_ids.map { |id| accounts_map[id] }.compact
rescue Neography::NeographyError, Excon::Error::Socket => e
Rails.logger.error e
return []
@ -25,23 +33,18 @@ END
private
def self.fallback(for_account_id, limit)
neo = Neography::Rest.new
query = 'MATCH (a) WHERE a.account_id <> {id} RETURN a.account_id ORDER BY a.nodeRank DESC LIMIT {limit}'
results = neo.execute_query(query, id: for_account_id, limit: limit)
neo = Neography::Rest.new
map_to_accounts(for_account_id, results)
rescue Neography::NeographyError, Excon::Error::Socket => e
Rails.logger.error e
return []
end
query = <<END
START a=node:account_index(Account={id})
MATCH (b)
WHERE a <> b
AND NOT (a)-[:follows]->(b)
RETURN b.account_id
ORDER BY b.nodeRank DESC
LIMIT {limit}
END
def self.map_to_accounts(for_account_id, results)
return [] if results.empty? || results['data'].empty?
account_ids = results['data'].map(&:first)
blocked_ids = Block.where(account_id: for_account_id).pluck(:target_account_id)
accounts_map = Account.where(id: account_ids - blocked_ids).map { |a| [a.id, a] }.to_h
account_ids.map { |id| accounts_map[id] }.compact
neo.execute_query(query, id: for_account_id, limit: limit)
end
end