AngularJs watch method to monitor input value and request data

This article mainly shares with you the method of AngularJs watch to monitor input value and request data. I hope it can help you.

1. html input menu and hidden controls

<p class="form-pider"></p>
<p class="form-item form-remark">
    <p class="item-title"><span class="adError">*</span> 投放产品</p>
    <input name="app" ng-model="chance.appName" type="text" class="item-select" placeholder="请填写产品名称">
</p>
<p ng-if="ishaveName==true" class="margin-top-1 adError">
    该应用已被商务"{{haveName}}"录入国，可保持沟通
</p>

2. Start using watch

1. JS must be initialized $watch control, ng-model="chance.appName"

$scope.chance={
    appName:null};

2. Start watch code

1. Be sure to note that it is $watch, with a dollar sign in front. There are variables inside, and there is no $scope

in front of the variables. 2. If the value is not obtained, the prompt control should not be displayed. So the variable $scope.ishaveName= false is set. Note that the JS header is initialized to false. Only when true will the prompt control be displayed.

3. When entering $watch, change the above 2 $scope.ishaveName is set to false

---

$scope.chance={
    appName:null};$scope.ishaveName= false;

---

$scope.$watch('chance.appName',function () {
    $scope.ishaveName= false;     if($scope.chance.appName!=null&&$scope.chance.appName!=undefined&&$scope.chance.appName!=''){         $http.get(ctx+'/chance/findAdminByAppName?appName='+$scope.chance.appName)
             .success(function (data,status) {
                 if(data.result!=null){                     $scope.haveName= data.result.name;                     $scope.ishaveName= true;

                 }
             })
     }

});

3, backend code

---

1, controller

---

@Controller@RequestMapping("chance")@ResourceFolder(folder = "module/chance/")public class ChanceController {


    @GetMapping("findAdminByAppName")    @ResponseBody
    public ResponseBean findAdminByAppName(String appName){            try {               return ResponseBean.buildSuccess(customerChanceService.findAdminByAppName(appName));
            }catch (AppException e){                return ResponseBean.buildFailure(e.getMessage());
            }
    }
}

2, service, when you set up a product for the logged-in person, you don’t need to prompt yourself. Try to prompt others as much as possible (fools know).

---

//根据产品名字 ，查看是否有商务经理已经添加了该产品,选则一个不是自己的产品经理@Overridepublic SysAdminUser findAdminByAppName(String appName) {    if("".equals(appName)||appName==null){        return null;
    }
    Long adminId = CasConfig.RemoteUserUtil.getRemoteUserId();

    List<SysAdminUser> sysAdminUsers = customerMapper.findAdminByAppName(appName);    //有可能会出现多个人，那么首先如果是自己创建的话，就排除掉
    if(sysAdminUsers.size()>0){        if(adminId.compareTo(sysAdminUsers.get(0).getId())==0){
            sysAdminUsers.remove(0);
        }        if(sysAdminUsers.size()>0){            return sysAdminUsers.get(0);
        }
    }    return null;
}

3. mapper

1. First of all, it should be clear that what we are getting here is managers, so we must focus on managers.

---

<!--根据产品，名字，看出是否已经有商务经理在维护了，根据产品名字 ，查看是否有商务经理已经添加了该产品,如果前台传入的参数我空，则通过java判断，不能进入本sql，`否则会出错`-->
    <select id="findAdminByAppName" resultType="com.duodian.admore.entity.db.admin.SysAdminUser">        SELECT s.*        FROM `sys_admin_user`  s
        left JOIN  crm_customer_chance c on c.adminId = s.id        where c.isVisible = 1 and c.adminId is not NULL
        <if test="_parameter != null and _parameter!= &#39;&#39;">            and c.appName = #{_parameter}
        </if>        GROUP by id
    </select>

</mapper>

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