Question

我想将一个对象从控制器传递给我的表单构建器，以便稍后可以将它用于我的ChoiceType字段。我该如何做到这一点？

这是我的控制者：

    $choices          = [];
    $table2Repository = $this->getDoctrine()->getRepository('SwipeBundle:Company');
    $table2Objects    = $table2Repository->findAll();

    foreach ($table2Objects as $table2Obj) {
        $choices[$table2Obj->getId()] = $table2Obj->getId() . ' - ' . $table2Obj->getName();
    }

    $form = $this->createForm(SubAgentType::class, $choices, array(
        'action'=>$this->generateUrl('backend_sub_agent_create'),
        'method'=>'POST'
    ));

这是我的SubAgentType.php

class SubAgentType extends AbstractType {

    protected $choices;

    public function __construct (Choices $choices)
    {
        $this->choices = $choices;
    }    

    public function buildForm(FormBuilderInterface $builder, array $options)
    {

        $builder->add('company_id', ChoiceType::class, array(
            'mapped'  => false,
            'choices' => $choices,
        ));

问题是我收到以下错误。

捕获致命错误：参数1传递给 MyBundle \ Form \ SubAgentType :: __ construct（）必须是。的实例 MyBundle \表格\选择，

Answer 1

回答你的问题：

在services.yml文件中：

myform.type:
    class: AppBundle\Form\MyFormType
    arguments:
        - '@doctrine.orm.entity_manager'
    tags:
      - { name: form.type }

你的MyFormType中的

：

/**
 * @var EntityManagerInterface
 */
protected $em;

/**
 * LicenseeType constructor.
 *
 * @param EntityManagerInterface $em
 */
public function __construct(EntityManagerInterface $em)
{
    $this->em = $em;
}

/**
 * @param FormBuilderInterface $builder
 * @param array                $options
 */
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $choices          = [];
    $table2Repository = $this-em->getRepository('SwipeBundle:Company');
    $table2Objects    = $table2Repository->findAll();

    foreach ($table2Objects as $table2Obj) {
        $choices[$table2Obj->getId()] = $table2Obj->getId() . ' - ' . $table2Obj->getName();
    }

    ...

但是，显然，如果您正确定义实体关系，则不需要这样做。

Answer 2

尝试在SubAgentType中解析构造函数，$ choices不需要是Choices的子类型：

var aExcelData = [
    {
        "ProductId": "1239102",
        "Name": "Power Projector 4713",
        "Category": "Projector",
        "SupplierName": "Titanium",
        "Description": "A very powerful projector with special features for Internet usability, USB",
        "WeightMeasure": 1467,
        "WeightUnit": "g",
        "Price": 856.49,
        "CurrencyCode": "EUR",
        "Status": "Available",
        "Quantity": 3,
        "UoM": "PC",
        "Width": 51,
        "Depth": 42,
        "Height": 18,
        "DimUnit": "cm"
    },
    {
        "ProductId": "2212-121-828",
        "Name": "Gladiator MX",
        "Category": "Graphics Card",
        "SupplierName": "Technocom",
        "Description": "Gladiator MX: DDR2 RoHS 128MB Supporting 512MB Clock rate: 350 MHz Memory Clock: 533 MHz, Bus Type: PCI-Express, Memory Type: DDR2 Memory Bus: 32-bit Highlighted Features: DVI Out, TV Out , HDTV",
        "WeightMeasure": 321,
        "WeightUnit": "g",
        "Price": 81.7,
        "CurrencyCode": "EUR",
        "Status": "Discontinued",
        "Quantity": 10,
        "UoM": "PC",
        "Width": 34,
        "Depth": 14,
        "Height": 2,
        "DimUnit": "cm",
    }
];
// Consider above array of object as a dummy data

    this.fnJSONToXLSXConvertor(aExcelData, <<put_here_xlsx_file_name>>);
}

fnJSONToXLSXConvertor : function(JSONData, ReportTitle) {

    var aData = typeof JSONData != 'object' ? JSON.parse(JSONData) : JSONData;
    if (aData.length) {
        var aFinalXlsxData,
            aXlsxHeaderData;

        // Array variable to store header data in XLSX file
        aXlsxHeaderData = [];
        aFinalXlsxData = [];

        // Below loop to extract header data
        for ( var iIndex in aData[0]) {
            switch (iIndex) {
            case "ProductId":
                aXlsxHeaderData.push(this.getText("ProductId"));
                break;
            case "Name":
                aXlsxHeaderData.push(this.getText("Name"));
                break;
            ...etc
            <<specify/push your column header from i18n>>
        }
        // Adding column header data in final XLSX data
        aFinalXlsxData.push(aXlsxHeaderData);

        // Below loop to extract data
        for (var i = 0; i < aData.length; i++) {
            // Array variable to store content data in XLSX file
            var aXlsxContentData = [];
            for ( var iIndex in aData[i]) {
                switch (iIndex) {
                case "ProductId":
                case "Name":
                case "Status":
                ...
                <<specify your column name, to extract only particular column data>>
                    aXlsxContentData.push(aData[i][iIndex]);
                    break;
                }
            }
            // Adding content data in final XLSX data
            aFinalXlsxData.push(aXlsxContentData);
        }

        var Workbook = function Workbook() {
            if(!(this instanceof Workbook)) return new Workbook();
            this.SheetNames = [];
            this.Sheets = {};
        }
        var wb = Workbook();
        wb.SheetNames.push(ReportTitle);

        var sheet_from_array_of_arrays = function sheet_from_array_of_arrays(data, opts) {
            var ws = {};
            var range = {s: {c:10000000, r:10000000}, e: {c:0, r:0 }};
            for(var R = 0; R != data.length; ++R) {
                for(var C = 0; C != data[R].length; ++C) {
                    if(range.s.r > R) range.s.r = R;
                    if(range.s.c > C) range.s.c = C;
                    if(range.e.r < R) range.e.r = R;
                    if(range.e.c < C) range.e.c = C;
                    var cell = {v: data[R][C] };
                    if(cell.v == null) continue;
                    var cell_ref = XLSX.utils.encode_cell({c:C,r:R});

                    if(typeof cell.v === 'number') cell.t = 'n';
                    else if(typeof cell.v === 'boolean') cell.t = 'b';
                    else if(cell.v instanceof Date) {
                        cell.t = 'n'; cell.z = XLSX.SSF._table[14];
                        cell.v = datenum(cell.v);
                    }
                    else cell.t = 's';

                    ws[cell_ref] = cell;
                }
            }
            if(range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
            return ws;
        }

        var ws = sheet_from_array_of_arrays(aFinalXlsxData);

        // Setting up Excel column width
        ws['!cols'] = [ 
            {wch:14},
            {wch:12}
            ...     
            <<specify no. of character in cell to set column width if any>>
        ];
        wb.Sheets[ReportTitle] = ws;        // wb.Sheets[ReportTitle] -> To set sheet name

        var wbout = XLSX.write(wb, {bookType:'xlsx', bookSST:true, type: 'binary'});
        var s2ab = function s2ab(s) {
            var buf = new ArrayBuffer(s.length);
            var view = new Uint8Array(buf);
            for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
            return buf;
        };
        saveAs(new Blob([s2ab(wbout)],{type:"application/octet-stream"}), ReportTitle + ".xlsx");

    } else {
        MessageBox.error(
            "No data..!",
            {
                styleClass: bCompact? "sapUiSizeCompact" : ""
            }
        );
    }
}

如果在控制器中注入一个数组，那么构造函数必须接受一个数组。

将对象从控制器传递到表单类型

2 个答案: