Read Only Error Since 1.1?

Since I upgraded to 1.1, I am getting ‘ActiveRecord::ReadOnlyRecord’
exceptions when trying to save a specific record.

I read up on ActiveRecord::Base.readonly? but I don’t think the
condition
there (objects pulled in from a certain JOIN type) applies.

Here’s my code that is throwing the exception:

@company = session[:company]
@company.bytes_used = @company.calculate_megabytes_used
@company.save
session[:company] = @company

This was working under 1.0 and I checked SVN and I don’t see any changes
to
this code in my repository since then…

What could be causing this? Any ideas?

Thanks,
Hunter

I’m having the same troubles. I have a has_and_belongs_to_many
relationship which is causing me the same problem. I modify the model
from the association and it errors out when I save. This also worked
for me pre 1.1. Any ideas on how I can make this work and not be read
only? This only seems to be a problem with has_and_belongs_to_many
realtionships.

(three tables, crawlers, teams, crawlers_teams)
crawler model relationship
has_and_belongs_to_many :teams

for team in crawler.teams
team.name = “Mets”
team.save
end

Thanks,
Dallas

HH wrote:

Since I upgraded to 1.1, I am getting ‘ActiveRecord::ReadOnlyRecord’
exceptions when trying to save a specific record.

I read up on ActiveRecord::Base.readonly? but I don’t think the
condition
there (objects pulled in from a certain JOIN type) applies.

Here’s my code that is throwing the exception:

@company = session[:company]
@company.bytes_used = @company.calculate_megabytes_used
@company.save
session[:company] = @company

This was working under 1.0 and I checked SVN and I don’t see any changes
to
this code in my repository since then…

What could be causing this? Any ideas?

Thanks,
Hunter

To answer my own question (and the guy before me).

Apparently you can’t use the has_and_belongs_to_many associations if you
want to update the model from the association because its made read only
based off this changelist. Instead it says to do a find by sql.

http://dev.rubyonrails.org/changeset/2594

Dallas wrote:

I’m having the same troubles. I have a has_and_belongs_to_many
relationship which is causing me the same problem. I modify the model
from the association and it errors out when I save. This also worked
for me pre 1.1. Any ideas on how I can make this work and not be read
only? This only seems to be a problem with has_and_belongs_to_many
realtionships.

(three tables, crawlers, teams, crawlers_teams)
crawler model relationship
has_and_belongs_to_many :teams

for team in crawler.teams
team.name = “Mets”
team.save
end

Thanks,
Dallas

HH wrote:

Since I upgraded to 1.1, I am getting ‘ActiveRecord::ReadOnlyRecord’
exceptions when trying to save a specific record.

I read up on ActiveRecord::Base.readonly? but I don’t think the
condition
there (objects pulled in from a certain JOIN type) applies.

Here’s my code that is throwing the exception:

@company = session[:company]
@company.bytes_used = @company.calculate_megabytes_used
@company.save
session[:company] = @company

This was working under 1.0 and I checked SVN and I don’t see any changes
to
this code in my repository since then…

What could be causing this? Any ideas?

Thanks,
Hunter

I’ve been using Join Models myself, but wanted to use an “acts_as_list”
with
a many-to-many relationship.
Setting up something like this doesn’t currently work with a Join Model
approach.

Someone wrote a “acts_as_habtm_list” plugin that works great… but does
requires a non-Join Model approach.

If anyone has time to whip up a Join Model version of this, that would
be
great :slight_smile:

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