修改事前支付表格为可选

src/views/businessConfig/contractConfig.vue

@@ -253,7 +253,7 @@
 
               <!-- 支付表格 -->
               <el-form-item label="事前支付表格" prop="prePaymentForm" class="form-section">
-                <el-select v-model="form.prePaymentForm" placeholder="请选择事前支付表格" class="form-input">
+                <el-select v-model="form.prePaymentForm" placeholder="请选择事前支付表格" class="form-input" clearable>
                   <el-option 
                     v-for="item in paymentFormOptions" 
                     :key="item.id" 
@@ -264,7 +264,7 @@
               </el-form-item>
 
               <el-form-item label="事后支付表格" prop="postPaymentForm" class="form-section">
-                <el-select v-model="form.postPaymentForm" placeholder="请选择事后支付表格" class="form-input">
+                <el-select v-model="form.postPaymentForm" placeholder="请选择事后支付表格" class="form-input" clearable>
                   <el-option 
                     v-for="item in paymentFormOptions" 
                     :key="item.id" 
@@ -349,7 +349,7 @@ export default {
           { required: true, message: '请选择采购方式', trigger: 'change' }
         ],
         prePaymentForm: [
-          { required: true, message: '请选择事前支付表格', trigger: 'change' }
+          // 移除必选验证规则
         ],
         postPaymentForm: [
           { required: true, message: '请选择事后支付表格', trigger: 'change' }
@@ -839,19 +839,20 @@ export default {
               // 只添加ID
               submitData.id = this.form.id
               
-              // 如果事前支付表格有值且与原始值不同，才添加到提交数据中
-              if (this.form.prePaymentForm && this.form.prePaymentForm !== this.originalPrePaymentForm) {
+              // 如果事前支付表格被清空，设置为空字符串
+              if (this.form.prePaymentForm === '') {
+                submitData.before_contract_template_id = ''
+              } else if (this.form.prePaymentForm && this.form.prePaymentForm !== this.originalPrePaymentForm) {
                 submitData.before_contract_template_id = this.form.prePaymentForm
               }
+              
               // 如果事后支付表格有值且与原始值不同，才添加到提交数据中
               if (this.form.postPaymentForm && this.form.postPaymentForm !== this.originalPostPaymentForm) {
                 submitData.contract_template_id = this.form.postPaymentForm
               }
             } else {
               // 新增模式下，如果有支付表格值就添加
-              if (this.form.prePaymentForm) {
-                submitData.before_contract_template_id = this.form.prePaymentForm
-              }
+              submitData.before_contract_template_id = this.form.prePaymentForm || ''
               if (this.form.postPaymentForm) {
                 submitData.contract_template_id = this.form.postPaymentForm
               }