how to convert a hash into an array with particular order? (ruby) -

-

I have a hash of hash (@post) and I want to save it to CSV. The strange thing for me is that my approach works for header, but not for rows if I

CSV < & Lt; (@ Post_csv_order.each {| element | puts single_post [element]})

I can see the correct string on the screen, but the CSV file does not have the value of the hash key that has the value Price Basically, I have 5 rows of headers in my CSV instead of the right values.

I think I must convert the post (key) hash based on @ post_csv_order with an order based on post @ [post]. @Post [Key] hash is a hash method but it will not give me the order I need.

I think that you can suggest a different approach and can not use the hash of the hand, but I would also like to know how to convert hash into an array in which something The pre-defined sequence is

On the other hand if there is an easy way to save CSV / a hash of hash in the table , then I would love to re-write my code Is happening

'code' is required 'fast_csv' requirement 'PP' @post = {123 = & gt; {"Forum ID" = & gt; "123", "Post Author" = & gt; "Thom"}, 222 = & gt; {"Forum ID" = & gt; "222", "Post Author" = & gt; "Mark"}, 345 = & gt; {"Forum ID" = & gt; "345", "Post Author" = & gt; "Heel"}, 444 = & gt; {"Forum ID" = & gt; "444", "Post Author" = & gt; "Eli"}} @post_cod_order- ["forummed", "post author"] forres csv Open ("test.csv", "w", {: quote_char = & gt; '',: col_sep = & gt; ',',:;); CSV | CSV & lt; & Lt; (@ Post_csv_order.each {| element | element] element:}) @ Post.each_value do | Single_post | Csv & lt; & Lt; (@ Post_csv_order.each {| element | single_post [element]}) #ccv & lt; & Lt; (@ Post_csv_order.each {| element | puts single_post [element]}) End of End

< P> This row: 

  csv & lt; & Lt; @ Post_csv_order.each {| Element | On single_post [element]}

@post_csv_order array and return the array, which is not what you want. Each and blocks do not really do anything in this context. If you change every to De> map this will work as you wish: 

  csv < & Lt; @ Post_csv_order.map {| Element | |

block

/ P>


Comments

Post a Comment

Popular posts from this blog

oracle - The fastest way to check if some records in a database table? -

-
I have a big table to work with. I have to see that there are some records whose parent_id is equal to my passing value. Currently I do this by implementing "my_table using select count (*) where parent_id =: id"; If the result> 0, it means that they exist. Because this is a very large table, and I do not care what the actual number of records present, I just want to know if it exists, so I think count (*) Bit is disabled. How do I apply this requirement most quickly? I'm using Oracle 10. # Tips for Hibernation & amp; Tricks It suggests writing in such a way: Integer number = (integer) session .createQuery ("Select Count (*) to ...."). UniqueResult (); I do not know what is the magic of the unique rule? Why does it fast? To compare, select "1 from mytable where parent_id = passId and rowrum", which is more efficient? If you are not interested in the number of records, then there is an EXISTS query one: Select 'y'
Read more

php - multilevel menu with multilevel array -

-
Just ask someone to solve this problem? I want to create a multilevel menu I can not find the right solution generated with multilevel array, it always gets an array_push error My study came from the original idea But still my Can not match the need. This is my MySQL [code] ----- --------------------- --------------- | ID | PARENT_ID | Name | Link | Seq | 1 | 0 | Dashboad | Dashboard / | 1 | 2 | 0 | Menu 1 | Menu 1 / | 2 | 3 | 0 | Menu 2 | Menu 2 / | 3 | 4 | 0 | Menu 3 | Menu 3 / | 4 | 5 | 2 | Joint Add / | 1 | 6 | 3 | Joint Add / | 1 | 7 | 2 | Edit | Edit / | 2 | 8 | 4 | Joint Add / | 1 ------------------------------------------ [/ Code] I want to do something like this in my array array ('dashboard' = & gt; array ('id' = & gt; '' 'Dame' = & gt; 'Dashboard', 'Title' = & gt; 'Dashboard', 'MatchMin' = & gt; Base_URL (). 'Dashboard /', 'Active' => = & Gt; NULL), &
Read more

jQuery UI: Datepicker month format -

-
I am trying to change the format of the month that shows in the popup (not in the date that the picker actually I do not have any choice anywhere to do this, do I like to use a sub-string () or something else? What I normally display is Trying to change: Class = "ui-datepicker-title"> January & lt; / span & gt; ... & lt; / div & gt; Div>
Read more