With the spreadsheet gem, you can run Spreadsheet::Link.new('http://hyperlinkhere.com', 'Some words') to make a spreadsheet with a cell containing the string "Some words" with a hyperlink leading to "http://hyperlinkhere.com."
What's the axlsx equivalent?
EDIT: What if I want to write a row with more than one cell?
With spreadsheet, you can do this:
newSheetRow[13] = Spreadsheet::Link.new('url.com','text')
newSheetRow[14] = 'some text'
How do I do that with axlsx's .add_row method?
You can add both links within workbook and URLs.
p = Axlsx::Package.new
book = p.workbook
book.add_worksheet(:name => 'hyperlinks') do |sheet|
# external references
sheet.add_row ['axlsx']
sheet.add_hyperlink :location => 'https://github.com/randym/axlsx', :ref => sheet.rows.first.cells.first
# internal references
sheet.add_hyperlink :location => "'Next Sheet'!A1", :ref => 'A2', :target => :sheet
sheet.add_row ['next sheet']
end
Related
I have a text file located in my project directory that contains the link of sites as well as the location of the logos. For example:
img1 = {name => "logo1", link => "http://example.com", imgpath => "img/logo1.png"}
img2 = {name => "logo2", link => "http://foobar.com", imgpath => "img/foobar.png"}
img3 = {name => "logo3", link => "http://foobar.com", imgpath => "img/foobar2.png"}
What I would like to do is loop through that text file to display each image with its link. I've searched all over and I can't seem to find a good example on how to do it. Here's the for loop I've got so far in my page:
- File.open("img/logos.txt").readlines.each do |name,link,imgpath|
.col-sm-6.col-md-4.col-lg-3
.item-work
.hover
%img{:alt => "Image", :src => "img/#{imgpath}"}/
%a.lightbox-image{:href => "#{link}", :title => "Image"}/
.overlay
.info
%a{:href => "#{name}"} #{name}
I'm sort of close, the page loads all the logos except the images aren't there and the links are associated with them. I know it's because I didn't call them correctly in my %img link and %a tags but I can't seem to figure it out. How would you suggest going about doing this?
#readlines is going to give you each line of the text file as a string. Based on your comment, this would word fine:
logos.txt:
logo1,http://example.com,img/logo1.png
logo2,http://foobar.com,img/foobar.png
logo3,http://foobar.com,img/foobar2.png
Haml:
- File.open("img/logos.txt").readlines.each do |line|
- img = line.split(',').map(&:chomp)
.col-sm-6.col-md-4.col-lg-3
.item-work
.hover
%img{:alt => "Image", :src => "img/#{img[2]}"}/
%a.lightbox-image{:href => "#{img[1]}", :title => "Image"}/
.overlay
.info
%a{:href => "#{img[0]}"} #{img[0]}
The second line is creating an array of values, like so:
[1] pry(main)> line
=> "logo1,http://example.com,img/logo1.png\n"
[2] pry(main)> line.split(',').map(&:chomp)
=> ["logo1", "http://example.com", "img/logo1.png"]
Given I have the following code:
ENDPOINT = 'http://api.eventful.com'
API_KEY = 'PbFVZfjTXJQWrnJp'
def get_xml(url, options={})
compiled_url = "#{ENDPOINT}/rest#{url}" << "?app_key=#{API_KEY}&sort_order=popularity"
options.each { |k, v| compiled_url << "&#{k.to_s}=#{v.to_s}" }
REXML::Document.new((Net::HTTP.get(URI.parse(URI.escape(compiled_url)))))
end
def event_search(location, date)
get_xml('/events/search',
:location => "#{location}, United Kingdom",
:date => date
)
end
And we access the XML data formatted by REXML::Document like this:
events = event_search('London', 'Today').elements
And we can access these elements like this (this prints all the titles in the events):
events.each('search/events/event/title') do |title|
puts title.text
end
The XML I'm using can be found here. I would like this construct a Hash like so:
{"Title1" => {:title => 'Title1', :date => 'Date1', :post_code => 'PostCode1'},
"Title2" => {:title => 'Title2', :date => 'Date2', :post_code => 'PostCode2'}}
When using events.each('search/events/event/title'), events.each('search/events/event/date'), and events.each('search/events/event/post_code').
So I want to create a Hash from the XML provided by the URL I have included above. Thanks!
You should loop over the events themselves, not the titles. Something like this
events_by_title = {}
elements.each('search/events/event') do |event|
title = event.get_elements('title').first.text
events_by_title[title] = {
:title => title,
:date => event.get_elements('start_time').first.text
:post_code => event.get_elements('postal_code').first.text,
}
end
Get the root element using root() on the REXML:Document object then use each_element("search/events/event") to iterate over "event" node. You can then extract the different values out of it using the different methods on element: http://ruby-doc.org/stdlib-1.9.3/libdoc/rexml/rdoc/REXML/Element.html
require 'gchart'
require 'rubygems'
require 'roo'
oo = Excelx.new("datav.xlsx")
oo.default_sheet = oo.sheets.first
2.upto(47) do |line|
data_a = [oo.cell(line,'B')]
data_b = [oo.cell(line,'E')]
chart_a = Gchart.new( :type => 'line',
:title => "A",
:theme => :keynote,
:width => 600,
:height => 500,
:data => data_a,
:line_colors => 'e0440e',
:axis_with_labels => ['x', 'y'],
:axis_range => [[0,50,20], [0,3000,500]],
:filename => "tmp/chart_a.png")
chart_b = Gchart.new( :type => 'line',
:title => "B",
:theme => :keynote,
:width => 600,
:height => 500,
:data => data_b,
:line_colors => 'e62ae5',
:axis_with_labels => ['x', 'y'],
:axis_range => [[0,50,20], [0,3000,500]],
:filename => "tmp/chart_b.png")
# Record file in filesystem
chart_a.file
chart_b.file
end
This will get every cell's content of column B and E to be the argument :data alone. How to return it as an array? If roo can't return array, then is there any else gem do this?
there is a column method that returns values of a given column as an array. Calling oo.column(2) should return you values for column B. oo.column('B') might work also. haven't tested it.
I needed the row back as a hash to be compatible with the logic I used for FasterCSV. This will give you a hash of the first row as the key and current line as the value.
def row_from_excel(s, line)
row = {}
s.first_column.upto(s.last_column) do |col|
cell_name = s.cell(1, col)
logger.debug "************* #{col} => #{cell_name} => #{s.cell(line, col)}"
row[cell_name] = s.cell(line, col)
end
row
end
s = Excelx.new(path_to_file) # or Excel.new(path_to_file)
2.upto(s.last_row) do |line|
row = row_from_excel(s, line)
end
I wanna generate a pdf with ruby and the prawn(0.8.4) gem. the first page of the pdf should have a different header/footer than the following pages. The data will be shown in a table, but the table is shown on multiple pages.
Example:
first page should have an header height of 60.mm
the table starts at the first page, below the header
on the second page there should be a header with a height of 30.mm
the table continues on the second page, below the smaller header
do you see my problem?
solved.
require "rubygems"
require "prawn"
require "prawn/core"
require "prawn/layout"
require "prawn/measurement_extensions"
Prawn::Document.generate("test.pdf", :page_size => "A3", :page_layout => :landscape, :margin => 0) do
padded_box 30.mm do
move_down(40.mm)
items = 100.times.map {|i| [i, i]}
table items, :border_style => :underline_header, :headers => ["Column#1", "Column#2"]
end
page_count.times do |i|
page_num = i+1
go_to_page(page_num)
if page_num == 1
# header of first page
text_box "header#1", :at => [30.mm, 290.mm], :size => 18
image "logo.png", :at => [12.mm,(297-15.78).mm]
else
# header 2..n
text_box "header#2..n", :at => [30.mm, 290.mm], :size => 12
end
end
end
I'm making a little script with ruby which produces a week schedule PDF file, using Prawn as a PDF library and I'm struggling with styling the table. I'd like to set a static width for all the columns in the table so that the widths wouldn't depend on the contents of the cells.
I've read the documentation (lot of room for improvement there) from the Prawn project site and googled for a few hours, but I'm lost at how to set width for columns or cells in a table, or how to style the columns/cells in any way whatsoever. I do get a PDF file which has a grid layout though, the cells just vary in size a lot, which doesn't look that neat.
This didn't work:
Prawn::Document.generate(#filename, :page_size => 'A4', :page_layout => :landscape) do
table(course_matrix, :headers => HEADERS, :border_style => :grid, :row_colors => ['dddddd', 'eeeeee'], :column_widths => 50)
end
Here's the current version of my method to generate PDF, but it doesn't stylize the cells either:
def produce_pdf
course_matrix = DataParser.new.parse_for_pdf
Prawn::Document.generate(#filename, :page_size => 'A4', :page_layout => :landscape) do
table(course_matrix, :headers => HEADERS, :border_style => :grid, :row_colors => ['dddddd', 'eeeeee']) do |table|
table.cells.style { |cell| cell.width = 50 }
end
end
end
I do something like this:
pdf = Prawn::Document.new(
:page_size => 'A4',
:page_layout => :landscape,
:margin => [5.mm])
....
....
pdf.table(tbl_data) do
row(0).style(:background_color => 'dddddd', :size => 9, :align => :center, :font_style => :bold)
column(0).style(:background_color => 'dddddd', :size => 9, :padding_top => 20.mm, :font_style => :bold)
row(1).column(1..7).style(:size => 8, :padding => 3)
cells[0,0].background_color = 'ffffff'
row(0).height = 8.mm
row(1..3).height = 45.mm
column(0).width = 28.mm
column(1..7).width = 35.mm
row(1..3).column(6..7).borders = [:left, :right]
row(3).column(6..7).borders = [:left, :right, :bottom]
....
pdf.render()
More info here.
To set a static width for all the columns I do something like this:
REPORT_FIELDS = %w[DESCRIPTION PRICE DATE NOTE].freeze
A4_SIZE = 200.freeze
data = []
data << REPORT_FIELDS
... things happen ...
table(data, column_widths: (A4_SIZE/REPORT_FIELDS.size).mm))
In this case I wanted to set the table to fit the full page and with the cells with the same width.