I’m trying to create an “Inventory” application that has two models:
1- item
2- itemdetails
I have made a “relationship” between those two models, such that:
item has_many itemdetails
Once I try to create an item or itemdetail I get a NoMethodError as
follows: http://pastie.org/private/wvqtorzl12vrkrudzc8ha
This also applies if I wnt to “show”.
The weird thing aslo is that when I get the NoMethodError page after I
add an item gets created, I find that I get a message that the item hs
been cteated succssfully.
And, attached are the files to show what I hav e did?
Any ideas on this?
Thanks a lot.
On Fri, Jul 16, 2010 at 1:08 PM, Abder-Rahman A. [email protected]
wrote:
follows: http://pastie.org/private/wvqtorzl12vrkrudzc8ha
Have you run all your migrations? Do you have the price column in your
itemdetails table?
–
Leonardo M…
There’s no place like ~
Leonardo M. wrote:
On Fri, Jul 16, 2010 at 1:08 PM, Abder-Rahman A. [email protected]
wrote:
follows: http://pastie.org/private/wvqtorzl12vrkrudzc8ha
Have you run all your migrations? Do you have the price column in your
itemdetails table?
–
Leonardo M…
There’s no place like ~
Thanks Leonardo.
I have included “price” when generating the scaffold. When I checked the
“itemdetails” table using SQLite Manager, the price in addition to other
fields are not presented as columns, but, there is ONE column presented
You can even see the fields presented in the show.html.erb og itemdetail
attached.
I also made a rake db:migrate
Why aren’t those fields present in the table?
What do you think I should do now?
Thanks.
Does sequence have to do here?
I mean, if I create the scaffold “item”, must I IMMEDIATELY rake
db:migrate BEFORE creating the scaffold “itemdetails”?
In my tables, I can see that the “items” table has the required fields,
but “itemdetails”. You know the story 
Thanks.
On Fri, Jul 16, 2010 at 1:35 PM, Abder-Rahman A. [email protected]
wrote:
Does sequence have to do here?
I mean, if I create the scaffold “item”, must I IMMEDIATELY rake
db:migrate BEFORE creating the scaffold “itemdetails”?
No, no need to.
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–
Leonardo M…
There’s no place like ~
On Fri, Jul 16, 2010 at 1:31 PM, Abder-Rahman A. [email protected]
wrote:
Leonardo M…
attached.
I also made a rake db:migrate
Why aren’t those fields present in the table?
Maybe there was something wrong with your migration generated file
What do you think I should do now?
Check the migration file created for the itemdetails scaffold, fix it
and re-do that migration with rake db:migrate:redo
VERSION=YOUR_MIGRATION_VERSION_NUMBER_HERE
If you want to start fresh, just re-create the scaffold and make sure
all the fields are created properly.
You can also generate a new migration to add the missing fields to
this table, but I wouldn’t recommend this for clarity sake.
Hope it helps.
–
Leonardo M…
There’s no place like ~
Thanks Leonardo. Just a small question since I’m nearly new to Rails.
What is the “migration file” called?
Leonardo M. wrote:
On Fri, Jul 16, 2010 at 1:35 PM, Abder-Rahman A. [email protected]
wrote:
Does sequence have to do here?
I mean, if I create the scaffold “item”, must I IMMEDIATELY rake
db:migrate BEFORE creating the scaffold “itemdetails”?
No, no need to.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to [email protected].
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
–
Leonardo M…
There’s no place like ~
Leonardo. Seems I may go with creating it from scratch again. But, till
now, don’t know what I have been missing for a column to show up and
other not.
Thanks.
On Sat, Jul 17, 2010 at 12:36 PM, Abder-Rahman A.
[email protected] wrote:
I think I figured what the issue was. I was assigning the type “double”
instead of writing it as “decimal” 
WAS —> price:double
NOW —> price:decimal —> Worked
There you go.
Sorry for the late.
To find the migration files you should look at the db/migrate
directory, there you’ll find those files named with the version number
(which is actually a timestamp) , followed by a relevant name about
what they do.
For example, your itemdetails scaffold migration file, might be named
something like this:
20100717192542_create_itemdetails.rb
Hope it helps.
Cheers.
Leonardo M…
There’s no place like ~
I think I figured what the issue was. I was assigning the type “double”
instead of writing it as “decimal”
WAS —> price:double
NOW —> price:decimal —> Worked