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ruby-on-rails - 如何安装 Prawn for Rails 4

转载 作者:行者123 更新时间:2023-12-04 12:32:32 24 4
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嗨,我正在尝试实现下载 PDF 收据。我不确定如何将 Prawn 与 Rails 4 应用程序集成,我找不到任何有关如何执行此操作的教程。请参阅下文了解我所做的事情。有人可以向我推荐一些文章或一些提示。

1 添加了 Prawn gem 并进行了捆绑安装

2 添加 Controller 代码以呈现 PDF

respond_to do |format|
format.html
format.pdf do
pdf = OrderPdf.new(@order, view_context)
send_data pdf.render, filename: "order_#{@order.order_number}.pdf",
type: "application/pdf",
disposition: "inline"
end
end

3 在 View 中有一个link_to 代码。 View 位于 App > PDF
<%= link_to "Download PDF", order_path(@order, format: pdf) %>

最佳答案

我不确定您需要帮助哪一部分,但我是这样做的。在下面的代码中,我正在创建收据的 pdf 并将其存储在数据库中。输出看起来像这样 - Sample Receipt

也许它可能会有所帮助。

class Omni::ReceiptWorksheet < Omni::Receipt

def print(receipt)
pdf = header receipt

data = []
data[0] = ["PO Nbr","Carton Nbr","Sku Nbr","Sku Description","S/U Open","S/U per Pack","Packs Open", "Packs Received"]

receipt.receipt_details.each_with_index do |detail,i|
selling_units = detail.purchase_detail.selling_units_approved - detail.purchase_detail.selling_units_received - detail.purchase_detail.selling_units_cancelled
data[i+1] = [detail.purchase.purchase_nbr,' ', detail.sku.sku_nbr, detail.sku.display, selling_units, detail.receipt_pack_size, selling_units / detail.receipt_pack_size, ' ']
end

pdf.move_down 110

pdf.table(data) do |t|
t.style(t.row(0), :background_color => '0075C9')
t.header = true
end

pdf.number_pages "page <page> of <total>", { :at => [pdf.bounds.right - 150, 0], width: 150, align: :right, page_filter: (1..50), start_count_at: 1, color: "002B82" }
attach StringIO.new(pdf.render), "receiving_worksheet#{Date.today}.pdf", receipt
end

def header(receipt)
pdf = Prawn::Document.new
pdf.font_size = 12
pdf.draw_text "Printed on: #{Date.today}", at: [0, 670]
pdf.draw_text "Receiving Worksheet", at: [220, 670]
pdf.draw_text "Page 1", at: [480, 670]

pdf.draw_text "Receipt #: #{receipt.receipt_nbr}", at: [0, 650]
pdf.draw_text "Receipt Date: #{Date.today}", at: [400, 650]

pdf.draw_text "Receiving Location: #{receipt.location_display}", at: [0, 640]
pdf.draw_text "Carrier Name: #{receipt.carrier_supplier.display}", at: [0, 620]
pdf.draw_text "Bill of Lading: #{receipt.bill_of_lading_number}", at: [450, 620]
pdf
end

def attach(file, file_name, receipt)
attachment = Buildit::Attachment.create(
attachable_type: "Omni::Receipt",
attachable_id: receipt.receipt_id,
file_name: file_name,
mime_type: 'application/pdf',
byte_size: file.size,
locale: 'en',
is_enabled: true
)

Buildit::Content.create(
contentable_type: "Buildit::Attachment",
contentable_id: attachment.attachment_id,
data: file.read
)
end

end

下面是我上传和下载附件的 Controller 。
class ContentController < ActionController::Base

def download

content = Buildit::Content.find_by_content_id(params[:file_id])
contentable = content.contentable
file_name = (contentable ? contentable.file_name : 'file')

send_data content.data, :disposition => 'attachment', :filename => file_name

end # def download

def upload
begin
content = Buildit::Content.create(
data: params[:file].read
)

result = {
success: true,
content_id: content.content_id,
file_name: params[:file].original_filename,
mime_type: params[:file].content_type,
byte_size: params[:file].size
}
rescue
result = {success: false}
end

render text: result.to_json, status: 200
end # def upload

end # class ContentController

祝你好运!如果您需要更具体的东西,请告诉我。

关于ruby-on-rails - 如何安装 Prawn for Rails 4,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19717074/

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