Question

我在其中一个视图中使用了表单助手，我希望用户从选项列表中进行选择。然后，我想将所选选项的id等效存储到我的数据库中。但是，每次我选择一个选项时，它的id都没有被存储，数据库只对这个属性说nil。

<%= f.label :"Team Against" %><br>
<%= f.select :opposing_team, options_for_select([['Team 1', 1], ['Team 2', 2], ['Team 3', 3]]) %><br>

例如，我的表格中有一列名为＆＃39; opposite_team＆＃39;当用户选择团队1时，我希望用值1更新opposition_team。目前我可以选择表单中的选项范围，但reflect_team值总是为零。

编辑：

def create
    @league = League.find(params[:league_id])
    @team = @league.teams.find(params[:team_id])
    @fixture = @team.fixtures.create(fixture_params)
    if @fixture.save
        redirect_to league_team_path(:league_id => @league.id, :id => @team.id)
    else
        render 'new'
    end

end 
def new
    @team = Team.find(params[:team_id])
    @fixture = Fixture.new 
end

这是灯具控制器的组成部分。 opposition_team是数据库中的整数值。

Answer 1

这是一个常见问题，通常答案是Release notes错过了必需的密钥。在你的控制器中，你最后有一个方法看起来像：

def fixture_params
  params.require(:fixture).permit(:value, :other_value, :opposing_team)
end

如果是，请将/** * This implementation uses HttpEngine to send requests and receive responses. This class may use * multiple HttpEngines to follow redirects, authentication retries, etc. to retrieve the final * response body. * * <h3>What does 'connected' mean?</h3> This class inherits a {@code connected} field from the * superclass. That field is <strong>not</strong> used to indicate whether this URLConnection is * currently connected. Instead, it indicates whether a connection has ever been attempted. Once a * connection has been attempted, certain properties (request header fields, request method, etc.) * are immutable. */ public class HttpURLConnectionImpl extends HttpURLConnection { private String defaultUserAgent() { String agent = System.getProperty("http.agent"); return agent != null ? Util.toHumanReadableAscii(agent) : Version.userAgent(); }添加到密钥列表中。

System.getProperty("http.agent");

Ruby on Rails的表单助手

1 个答案: