[英]Vue js v-for not working when array passed through props
當我通過道具v-for
傳遞數組時,由於某種原因,我沒有得到它,因為它不會工作,而我直接看到的數據唯一的區別是,從道具傳遞的數組之間沒有空格。
我正在使用laravel,並通過刀片服務器im將數據傳遞到vue,數據是帶有信息的所有照片的陣列。 但是該數據不會列出所有照片並顯示div。
讓我向您展示我的代碼:
這就是刀片模板中的內容:
<picture-upload
:input_value="'{{ json_encode($profilephotos) }}'"
:bind_user="'{{ $profile->id }}'"
:input_name="'profilephoto'"
:post_url="'{{ route('photouploads') }}'"
:type="'profilephoto'"
></picture-upload>
我不認為json_encode
在這種情況下有所作為,但我以任何方式嘗試過。
這就是我在photos.vue
文件中所擁有的
props: ['input_name', 'post_url', 'bind_user', 'type', 'input_value'],
data() {
return {
files: [],
uploads: this.input_value,
items: [
{"id":110,"user_id":28,"type":"profilephoto","name":"5.jpg","mime":"image/jpeg","extension":"jpg","path":"3f49191095d302fb7e66ce037dd5efa111287e8230964ad8a3170687ca4336a1","size":192445,"created_at":"2019-04-23 16:04:01","updated_at":"2019-04-23 16:04:01"},
{"id":111,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"0bd693c2cd1ab5ec2c7223fc6a92356ab68c52e8cc0b7d5d5aa5b4a230cf015b","size":193223,"created_at":"2019-04-23 21:58:52","updated_at":"2019-04-23 21:58:52"},
{"id":112,"user_id":28,"type":"profilephoto","name":"5.jpg","mime":"image/jpeg","extension":"jpg","path":"0bd693c2cd1ab5ec2c7223fc6a92356ab68c52e8cc0b7d5d5aa5b4a230cf015b","size":192445,"created_at":"2019-04-23 21:58:52","updated_at":"2019-04-23 21:58:52"},
{"id":113,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"ffe6f95d10c5249390fcea140fe15a1fb57f5d29626a947e4a999db50f3ea295","size":193223,"created_at":"2019-04-23 22:00:10","updated_at":"2019-04-23 22:00:10"},
{"id":114,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"75a00a901f1a01a0267d44bebc8574efa9eb7a7edfd395e29dabb289efb353ac","size":193223,"created_at":"2019-04-23 22:05:32","updated_at":"2019-04-23 22:05:32"}
]
}
},
所以input_value
是刀片服務器模板傳遞的內容, items
是我為測試手動添加的內容, items
與我在前端輸出數據時看到的內容完全相同。
這是我在.vue
<template>
部分中的內容
{{ items }}
<li v-for="item in items">
{{ item.type }}
</li>
{{ uploads }}
<div v-for="upload in uploads">
{{ upload.type }}
</div>
因此, items
應該輸出完整的數組,而v-for
應該過濾並輸出該數組中的每個項目,這對於uploads
應該相同,但是問題是uploads
無法正常工作。
這就是我真正要面對的
對於{{ items }}
[ { "id": 110, "user_id": 28, "type": "profilephoto", "name": "5.jpg", "mime": "image/jpeg", "extension": "jpg", "path": "3f49191095d302fb7e66ce037dd5efa111287e8230964ad8a3170687ca4336a1", "size": 192445, "created_at": "2019-04-23 16:04:01", "updated_at": "2019-04-23 16:04:01" }, { "id": 111, "user_id": 28, "type": "profilephoto", "name": "4.jpg", "mime": "image/jpeg", "extension": "jpg", "path": "0bd693c2cd1ab5ec2c7223fc6a92356ab68c52e8cc0b7d5d5aa5b4a230cf015b", "size": 193223, "created_at": "2019-04-23 21:58:52", "updated_at": "2019-04-23 21:58:52" }, { "id": 112, "user_id": 28, "type": "profilephoto", "name": "5.jpg", "mime": "image/jpeg", "extension": "jpg", "path": "0bd693c2cd1ab5ec2c7223fc6a92356ab68c52e8cc0b7d5d5aa5b4a230cf015b", "size": 192445, "created_at": "2019-04-23 21:58:52", "updated_at": "2019-04-23 21:58:52" }, { "id": 113, "user_id": 28, "type": "profilephoto", "name": "4.jpg", "mime": "image/jpeg", "extension": "jpg", "path": "ffe6f95d10c5249390fcea140fe15a1fb57f5d29626a947e4a999db50f3ea295", "size": 193223, "created_at": "2019-04-23 22:00:10", "updated_at": "2019-04-23 22:00:10" }, { "id": 114, "user_id": 28, "type": "profilephoto", "name": "4.jpg", "mime": "image/jpeg", "extension": "jpg", "path": "75a00a901f1a01a0267d44bebc8574efa9eb7a7edfd395e29dabb289efb353ac", "size": 193223, "created_at": "2019-04-23 22:05:32", "updated_at": "2019-04-23 22:05:32" } ]
如果我做的話,這里有v-for="item in items"
邏輯工作
<li v-for="item in items">
{{ item.type }}
</li>
我將獲得item.type
列表
如果我對uploads
所做的操作完全相同,則會發生問題。
如果我測試{{ uploads }}
輸出,我將得到與items
完全相同的數組,除了數組中的事物之間有空格。
這是{{ uploads }}
輸出
[{"id":110,"user_id":28,"type":"profilephoto","name":"5.jpg","mime":"image/jpeg","extension":"jpg","path":"3f49191095d302fb7e66ce037dd5efa111287e8230964ad8a3170687ca4336a1","size":192445,"created_at":"2019-04-23 16:04:01","updated_at":"2019-04-23 16:04:01"},{"id":111,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"0bd693c2cd1ab5ec2c7223fc6a92356ab68c52e8cc0b7d5d5aa5b4a230cf015b","size":193223,"created_at":"2019-04-23 21:58:52","updated_at":"2019-04-23 21:58:52"},{"id":112,"user_id":28,"type":"profilephoto","name":"5.jpg","mime":"image/jpeg","extension":"jpg","path":"0bd693c2cd1ab5ec2c7223fc6a92356ab68c52e8cc0b7d5d5aa5b4a230cf015b","size":192445,"created_at":"2019-04-23 21:58:52","updated_at":"2019-04-23 21:58:52"},{"id":113,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"ffe6f95d10c5249390fcea140fe15a1fb57f5d29626a947e4a999db50f3ea295","size":193223,"created_at":"2019-04-23 22:00:10","updated_at":"2019-04-23 22:00:10"},{"id":114,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"75a00a901f1a01a0267d44bebc8574efa9eb7a7edfd395e29dabb289efb353ac","size":193223,"created_at":"2019-04-23 22:05:32","updated_at":"2019-04-23 22:05:32"},{"id":115,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"c0db13b85c255a30b8466ca5778cad05d06f20f2cf12a3db46e9b6a7d182fdd8","size":193223,"created_at":"2019-04-23 22:14:37","updated_at":"2019-04-23 22:14:37"},{"id":116,"user_id":28,"type":"profilephoto","name":"4.jpg","mime":"image/jpeg","extension":"jpg","path":"3591cedc64c8f3638d71643291ce2e37d697dbcdfe08c715254d94237b93b1a1","size":193223,"created_at":"2019-04-23 22:21:37","updated_at":"2019-04-23 22:21:37"}]
如果我嘗試去做
<div v-for="upload in uploads">
{{ upload.type }}
</div>
我得到了一整堆空的div,而不是upload.type
輸出。 再加上我總共有20張圖片,我得到200張空白的div。
這讓我很困惑,為什么會這樣發生,有什么建議嗎?
您正在對變量進行JSON編碼,因此您傳遞了一個string
。 從本質上講這是正確的,但您可能還需要更改
:input_value="'{{ json_encode($profilephotos) }}'"
至
:input_value="{{ json_encode($profilephotos) }}"
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