问题
I think this is most likely very simple but I cannot find any clear documentation on how to add a filter outside of the 'filterText' that is shown on their website. What I am trying to do is something as simple as this:
$scope.filterOptions = {
filter: $scope.myFilter, // <- How to do something like this?
useExternalFilter: true
}
$scope.gridOptions = {
data: 'entries',
enableColumnResize: false,
multiSelect: false,
enableSorting: false,
selectedItems: $scope.selectedEntries,
filterOptions: $scope.filterOptions
}
$scope.lowerLimit = 50;
// My Filter
$scope.myFilter = function(entry) {
if (entry < $scope.lowerLimit) {
return false;
}
return true;
}
Edit: Or maybe if I could filter the datasource somehow? I tried this:
$scope.gridOptions = {
data: 'entries | filter: myFilter',
enableColumnResize: false,
multiSelect: false,
enableSorting: false,
selectedItems: $scope.selectedEntries,
}
But it is throwing quite a few errors.
回答1:
You can use angular to bind to the filterOptions.filterText variable. There's a plunker here to demonstrate: http://plnkr.co/edit/PHdBhF?p=preview
I'll post the same code below:
// main.js
var app = angular.module('myApp', ['ngGrid']);
app.controller('MyCtrl', function($scope) {
$scope.filterOptions = {
filterText: ''
};
$scope.myData = [{name: "Moroni", age: 50},
{name: "Tiancum", age: 43},
{name: "Jacob", age: 27},
{name: "Nephi", age: 29},
{name: "Enos", age: 34}];
$scope.gridOptions = {
data: 'myData',
filterOptions: $scope.filterOptions
};
});
The above should be about identical to the plunkers on the docs page.
<!DOCTYPE html>
<html ng-app="myApp">
<head lang="en">
<meta charset="utf-8">
<title>Custom Plunker</title>
<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="http://angular-ui.github.com/ng-grid/css/ng-grid.css" />
<link rel="stylesheet" type="text/css" href="style.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script>
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.2/angular.min.js"></script>
<script type="text/javascript" src="http://angular-ui.github.com/ng-grid/lib/ng-grid.debug.js"></script>
<script type="text/javascript" src="main.js"></script>
</head>
<body ng-controller="MyCtrl">
<strong>Filter:</strong><input type="text" ng-model="filterOptions.filterText" />
<br/>
<br/>
<div class="gridStyle" ng-grid="gridOptions"></div>
</body>
</html>
Notice ng-model="filterOptions.filterText" on the <input ...>. That's all it takes!
回答2:
I have found a way that updates instantly. Basically I hold a hidden set of all my data, and upon receiving new data or changing my filter - I apply this filter to the full data set and hand the grid the filtered version.
This lets me use comparators (i.e. age >= 50) in my filter, which is the purpose of this question.
// Full unfiltered data set
$scope.entries = []; // Updated and pushed to
$scope.gridOptions = {
// The grids already filtered data set
data: 'filteredEntries',
enableColumnResize: false,
multiSelect: false,
enableSorting: false,
selectedItems: $scope.selectedEntries,
}
$scope.$on("updateEntries", function(data) {
// My table is filled by socket pushes, this is where it is updated.
$scope.updateFilters();
}
$scope.$on("newFilter", function(newFilter) {
// This is where I update my filter
$scope.updateFilters();
}
$scope.updateFilters = function() {
// Filters the full set and hands the result to the grid.
$scope.filteredEntries = $filter('filter')($scope.entries, $scope.myFilter);
$scope.$digest();
}
// A modifiable limit, modify through newFilter so data is refiltered
$scope.lowerLimit = 50;
// My Filter
$scope.myFilter = function(entry) {
if (entry < $scope.lowerLimit) {
return false;
}
return true;
}
回答3:
This is my solution!!
It found with ng-grid in html:
<input type="text" ng-model="miinput" placeholder="Filter text"/>
<div class="gridStyles" ng-grid="gridOpciones">
</div>
in js:
//pagination
$scope.filterOptions = {
filterText: $scope.miinput,
useExternalFilter: true
};
$scope.totalServerItems = 0;
$scope.pagingOptions = {
pageSizes: [10, 25, 50],
pageSize: 10,
currentPage: 1
};
$scope.setPagingData = function(data, page, pageSize){
var pagedData = data.slice((page - 1) * pageSize, page * pageSize);
$scope.vocabulario = pagedData;
$scope.totalServerItems = data.length;
if (!$scope.$$phase) {
$scope.$apply();
}
};
$scope.getPagedDataAsync = function (pageSize, page, searchText) {
setTimeout(function () {
var data;
if (searchText) {
var ft = searchText.toLowerCase();
$http.get('http://localhost:9000/json/voc.json').success(function (largeLoad) {
data = largeLoad.filter(function(item) {
return JSON.stringify(item).toLowerCase().indexOf(ft) != -1;
});
$scope.setPagingData(data,page,pageSize);
});
} else {
$http.get('http://localhost:9000/json/voc.json').success(function (largeLoad) {
$scope.setPagingData(largeLoad,page,pageSize);
});
}
}, 100);
};
$scope.getPagedDataAsync($scope.pagingOptions.pageSize, $scope.pagingOptions.currentPage);
$scope.$watch('pagingOptions', function (newVal, oldVal) {
if (newVal !== oldVal && newVal.currentPage !== oldVal.currentPage) {
$scope.getPagedDataAsync($scope.pagingOptions.pageSize, $scope.pagingOptions.currentPage, $scope.filterOptions.filterText);
}
}, true);
$scope.$watch('filterOptions', function (newVal, oldVal) {
if (newVal !== oldVal) {
$scope.getPagedDataAsync($scope.pagingOptions.pageSize, $scope.pagingOptions.currentPage, $scope.filterOptions.filterText);
}
}, true);
//cada vez que escribo en el input
$scope.$watch('miinput', function () {
if ($scope.miinput !== "") {
$scope.pagingOptions.currentPage=1;
$scope.getPagedDataAsync($scope.pagingOptions.pageSize, $scope.pagingOptions.currentPage, $scope.miinput);
}else{
$scope.getPagedDataAsync($scope.pagingOptions.pageSize, $scope.pagingOptions.currentPage, $scope.filterOptions.filterText);
}
}, true);
//
$scope.gridOpciones = {
data: 'vocabulario',
showGroupPanel: true,
enableCellSelection: true,
enableRowSelection: true,
enableCellEdit: true,
enablePaging: true,
showFooter: true,
totalServerItems: 'totalServerItems',
pagingOptions: $scope.pagingOptions,
filterOptions: $scope.filterOptions,
columnDefs: [
{field:'I', displayName:'Id', width:60,resizable: true},
{field:'T', displayName:'Type',visible:false,resizable: true},
{field:'N', displayName:'Level',width:60},
{field:'L', displayName:'List',width:100},
{field:'P', displayName:'English',minWidth: 400},
{field:'R', displayName:'Spanish', minWidth: 400}]
};
//JSON
[
{"I": "3001", "T": "F", "N": "3", "L": "01 a", "P": "HE IDO ALL\u00cd DOS VECES ESTA SEMANA", "R": "I'VE GONE THERE TWICE THIS WEEK"},
{"I": "3002", "T": "F", "N": "3", "L": "01 a", "P": "\u00c9L ME HA LLAMADO VARIAS VECES HOY", "R": "HE'S CALLED ME SEVERAL TIMES TODAY"},
{"I": "3003", "T": "F", "N": "3", "L": "01 a", "P": "HEMOS LLEGADO A UNA CONCLUSI\u00d3N", "R": "WE'VE REACHED A CONCLUSION"},
{"I": "3004", "T": "F", "N": "3", "L": "01 a", "P": "HEMOS DECIDIDO CANCELAR EL PROYECTO", "R": "WE'VE DECIDED TO CANCEL THE PROJECT"},
{"I": "3005", "T": "F", "N": "3", "L": "01 a", "P": "NO HAN HECHO NADA", "R": "THEY HAVEN'T DONE ANYTHING"},
{"I": "3006", "T": "F", "N": "3", "L": "01 a", "P": "HE PROBADO MUCHAS DIFERENTES PROFESIONES", "R": "I'VE TRIED MANY DIFFERENT PROFESSIONS"},
{"I": "3007", "T": "F", "N": "3", "L": "01 a", "P": "\u00c9L HA PERDIDO LA VOZ", "R": "HE'S LOST HIS VOICE"},
{"I": "3008", "T": "F", "N": "3", "L": "01 a", "P": "ELLA NO HA VENIDO POR AQU\u00cd \u00daLTIMAMENTE"}
]
来源：https://stackoverflow.com/questions/17977869/how-to-filter-my-data-ng-grid