我试图保留数组<!DOCTYPE html>
<html>
<body>
<button class="button button1" onclick="PlusPage()">Next Page </button>
<button class="button button1" onclick="RemPage()">Previous Page </button>
<br><br>
<img id="page" src="https://github.com/sudface/ps8/raw/master/1.png" alt="">
<br>The below textbox should alter the page. but instead, the whole thing stops functioning.
<input id="someInput" type="text">
<input type="button" value="Go to Page" onClick="doStuff()">
</body>
</html>的现有值，并将@account.images的值添加到数组中，如下所示：
new_images这就是我在强大的def add_more_images(new_images)
@account = Account.find(params[:id])
@images = [@account.images]
@images += [new_images]
@account.assign_attributes({ :images => @images })
end
这是我从`@ account.images：
获得的 {images: []}
这是我从[#<AttachmentUploader:0x007f98699482f8 @model=#<Account id: 1, business_name: "Example Account", business_description: "There are many variations of passages of Lorem Ips...", web_site: "www.example.com", phone_number: "", street: "", zip_code: "6021", country: "", store_id: 1, city: "", state: "", created_at: "2018-03-04 14:39:23", updated_at: "2018-03-13 09:19:30", images: [nil, nil, nil, "image8.jpg"]>, @mounted_as=:images, @storage=#<CarrierWave::Storage::File:0x007f9869948258 @uploader=#<AttachmentUploader:0x007f98699482f8 ...>>, @file=#<CarrierWave::SanitizedFile:0x007f986a1f3ce0 @file="/Users/RubymineProjects/pinsle/public/uploads/account/images/1/image8.jpg", @original_filename=nil, @content_type=nil>, @versions={:thumb=>#<AttachmentUploader::Uploader70146304658160:0x007f986a1f3c90 @model=#<Account id: 1, business_name: "Example Account", business_description: "There are many variations of passages of Lorem Ips...", web_site: "www.example.com", phone_number: "2349875678", street: "", zip_code: "", country: "", store_id: 1, city: "", state: "", created_at: "2018-03-04 14:39:23", updated_at: "2018-03-13 09:19:30", images: [nil, nil, nil, "image8.jpg"]>, @mounted_as=:images, @parent_version=#<AttachmentUploader:0x007f98699482f8 ...>, @storage=#<CarrierWave::Storage::File:0x007f986a1f3bc8 @uploader=#<AttachmentUploader::Uploader70146304658160:0x007f986a1f3c90 ...>>, @file=#<CarrierWave::SanitizedFile:0x007f986a1f36a0 @file="/Users/RubymineProjects/pinsle/public/uploads/account/images/1/thumb_image8.jpg", @original_filename=nil, @content_type=nil>, @versions={}>, :mini=>#<AttachmentUploader::Uploader70146304645520:0x007f986a1f3c68 @model=#<Account id: 1, business_name: "Example Account", business_description: "There are many variations of passages of Lorem Ips...", web_site: "www.example.com", phone_number: "2349875678", street: "", zip_code: "", country: "", store_id: 1, city: "", state: "", created_at: "2018-03-04 14:39:23", updated_at: "2018-03-13 09:19:30", images: [nil, nil, nil, "image8.jpg"]>, @mounted_as=:images, @parent_version=#<AttachmentUploader:0x007f98699482f8 ...>, @storage=#<CarrierWave::Storage::File:0x007f986a1f35d8 @uploader=#<AttachmentUploader::Uploader70146304645520:0x007f986a1f3c68 ...>>, @file=#<CarrierWave::SanitizedFile:0x007f986a1f30b0 @file="/Users/RubymineProjects/pinsle/public/uploads/account/images/1/mini_image8.jpg", @original_filename=nil, @content_type=nil>, @versions={}>}>]得到的：
new_images
这是我在这一行[#<ActionDispatch::Http::UploadedFile:0x007f986a2096a8 @tempfile=#<Tempfile:/var/folders/hq/pr4rt14n7s31v3f6292wtjm00000gn/T/RackMultipart20180313-2377-yox8g6.jpg>, @original_filename="image1.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"account[images][]\"; filename=\"image1.jpg\"\r\nContent-Type: image/jpeg\r\n">]
no implicit conversion of nil into String
我在这里做错了什么以及如何使这项工作成功？
答案 0 :(得分：0)
你必须使用这样的东西：
$array = ["1", "hello", "1", "world", "hello"];