Question

我想通过使用for循环使用laravel中的whereMonth子句来查询数据库，但是我得到了一个空数组。如果我将whereMonth子句中的$ m替换为类似7的整数，则会提取数据。

            <table class="table table-bordered table-hover expenses-report" id="expenses-report-table">
                <thead>
                    <tr>
                        <th class="bold">Category</th>
                        <?php
                            for ($m=1; $m<=12; $m++) {
                                echo '  <th class="bold">' .date('F', mktime(0,0,0,$m,1)) . '</th>';} 
                        ?>
                        <th class="bold">year ({{\Carbon\Carbon::now()->format('Y')}})</th>
                        <?php

                        ?>
                    </tr>
                </thead>
                <tbody>
                    @foreach ($categories as $category)
                    <tr>
                        <td>
                            {{$category->name}}
                            <?php
                            for ($m = 1; $m <= 12; $m++) {
                                if (!isset($netMonthlyTotal[$m])) {
                                    $netMonthlyTotal[$m] = array();
                                }
                                $expense_results = $expenses->whereMonth('date',$m)
                                ->whereYear('date', \Carbon\Carbon::now()->format('Y'))
                                ->where('category', $category->id)
                                ->get();
                                print_r($expense_results);
                                $total_expenses = array();
                                echo '<td>';
                                foreach ($expense_results as $expense) {
                                    $expense = $expenses->where('id', $expense->id)->first();
                                    $total = $expense->amount;
                                    $totalTaxByExpense = 0;
                                    // Check if tax is applied
                                    if ($expense->tax != 0) {
                                        $totalTaxByExpense+= ($total / 100 * $expense->tax);
                                    }
                                    $taxTotal[$m][] = $totalTaxByExpense;
                                    $total_expenses[] = $total;
                                }
                                $total_expenses = array_sum($total_expenses);
                                // Add to total monthy expenses
                                array_push($netMonthlyTotal[$m], $total_expenses);
                                if (!isset($totalNetByExpenseCategory[$category->id])) {
                                    $totalNetByExpenseCategory[$category->id] = array();
                                }
                                array_push($totalNetByExpenseCategory[$category->id], $total_expenses);
                                // Output the total for this category
                                if (count($categories) <= 8) {
                                    echo $total_expenses;
                                } else {
                                    // show tooltip for the month if more the 8 categories found. becuase when listing down you wont be able to see the month
                                    echo '<span data-toggle="tooltip"
                                                                title="' . date('F', mktime(0, 0, 0, $m, 1)) . '">' . $total_expenses . '</span>';
                                }
                                echo '</td>';
                            }
                            ?>
                        </td>
                        <td class="bg-odd">
                            {{array_sum($totalNetByExpenseCategory[$category->id])}}
                        </td>
                    </tr>
                    @endforeach

                </tbody>
            </table>

我基本上想返回与搜索查询匹配的结果，包括whereMonth

Answer 1

您可以替换这部分吗

Configures a MySQL DB instance to be a Read Replica of an instance of MySQL running external to Amazon RDS

与此

$query->whereMonth('date', $m);

然后重试。我猜它不接受整数。

Answer 2

我能够通过使用Raw查询使其工作

$ rawQuery =“从tblexpenses处选择金额，标识号，税款，MONTH（date）= $ m AND YEAR（CURRENT_DATE）AND category = $ category-> id GROUP BY id”; $ expense_results = DB :: select（DB :: raw（$ rawQuery））;

不过，如果有人可以帮助将该查询翻译为laravel，我将不胜感激

无法在for循环php laravel中使用whereMonth查询获取数据库结果

2 个答案: