jsはフォームの提出上の認識を阻止します.

    function check_form(){
    	  	/*
                  ，   concert       ，        
             */
            $('tr').each(function () {
                var user_id = this.id;
                var concert = $('#concert_'+user_id).val()
                if (concert !== ''){
                    if (concert >= 10 && concert <= 0) {
                        $("#span_" + assingee_id).css('display', 'block');
                        return false
                    }
                }
            })
            var concert = $('.cencert').val()
            console.log('concert:',concert)
    	  }

function check_form() {
            const name = $.trim($("#name").val());
           
            //       
            if (!name) {
                alert("      ！");
                return false;
            }
            const form_data = $("#form_data").serialize();
            //          
            $.ajax({
                url: "{% url 'bugs:project' %}",
                data: {"form_data": form_data,'path':path, "action": action},
                type: "post",
                dataType: "json",
                beforeSend: function () {
                    $("#tip").html("    ...");
                    return true;
                },
                success: function (data) {
                    if (data) {
                        var msg = "  ";
                        if (data == "update") msg = "  ";
                        $("#tip").html("  ，" + msg + "  ！");
                        alert(msg + "OK！");
                        location.reload();
                    }
                    else {
                        if (data == -2) alert("       ！");
                        $("#tip").html("  ！    ");
                        alert("    ");
                    }
                },
                error: function () {
                    alert("    ！");
                },
                complete: function () {
                    $("#acting_tips").hide();
                }
            });
            return false;
        }

$('tr').each(function () {
            var user_id = this.id;
            concert = $('#concert_' + user_id).val();
            if (concert !== '') {
                if (concert > 10 || concert < 0) {
                    //     
                    $('#submit').attr('disabled', 'true');
                    return false
                } else {
                    $('#submit').removeAttr('disabled');
                }
            }
        });