Rails url_for and params missery
Assume you have a params array with the following items:
params[:qry][:city] = ”
You would like to build a new URL with the current params appended. Should be as simple as:
Well that’s not the case it results in the following URL:
http://localhost/controller/list?qry=namejocity&sort=created_at
Long live Rails! The frustrating part of it, is that it first converts inner Hashmaps to a string. I don’t have a clue why!
The solution, put the following code in your ApplicationHelper. (Is a nice method to have ;-)
# Converts the given HASH array like ‘params’ to a flat
# HASH array that’s compatible with url_for and link_to
#
def flatten_param_hash( params )
found = true
while found
found = false
new_hash = {}
params.each do |key,value|
if value.is_a?( Hash )
found = true
value.each do |key2,value2|
new_hash[ key.to_s + ‘[' + key2.to_s + ']‘ ] = value2
end
else
new_hash[ key.to_s ] = value
end
end
params = new_hash
end
params
end
Adjust your code to the following
And voila the result is now a little bit better:
http://localhost/controller/list?qry[name]=jo&qry[city]=&sort=created_at
Thank for this code!
It’s very usefull!
Nice post,
YOU saved my day
thanks for the post