Odoo Development · Derry
Odoo Development in Derry
Building custom modules for Derry businesses running Odoo, where computed fields are the feature most often got subtly wrong. A computed field only recalculates when something it declares a dependency on changes — declare the wrong ones and the value quietly goes stale, showing a figure that was correct at some point in the past.
Why this comes up
The problem
A calculated total is wrong on some records and right on others, and nobody can find a pattern in which ones.
What you get
What we deliver
- Computed fields written with complete and accurate dependencies
- Stored versus non-stored decided per field, since it affects searching and speed
- Operations written against recordsets rather than looping record by record
- Modules structured to inherit standard behaviour instead of replacing it
- Access rules and record rules defined for anything the module introduces
- Code version controlled and deployable, not edited on the server
Want this scoped for your business in Derry?
Thirty minutes, no charge, no sales script. You leave with a written summary of what odoo development would actually involve — whether or not you use us.
Working in Derry
Northern Ireland
The city is Derry to most of its population and Londonderry in official use, and which name you lead with is read as a statement here — we use Derry in customer-facing copy and note both where a document has to be formal.
Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west.
Sectors we work with in Derry
- Manufacturing
- Healthcare
- Higher Education
- Digital
- Tourism
What we work with
Technologies and platforms
- Odoo
- Python
- PostgreSQL
- XML
Who we work with
Industries we serve
- Manufacturing
- Wholesale
- Retail
- Professional services
- Small and medium businesses
Why us
Why Derry businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in Derry
Looking for the full picture? See our Odoo Development services, everything we do in Derry or browse everything we do.
Odoo Development in Derry — common questions
- Why do computed fields go stale?
- Because recalculation is triggered by declared dependencies, not by anything changing. If a computation reads a field it never declares, Odoo has no reason to recompute when that field changes — and the stored value stays as it was, indefinitely and silently.
- Should computed fields be stored?
- Store them when you need to search, sort or group on the value, and accept the recomputation cost. Leave them unstored when they are display-only, which avoids writing to the database every time a dependency changes across a large table.
- What is the usual performance mistake?
- Looping over records and writing to each one individually. The ORM is built to act on a whole recordset at once, and a per-record loop turns one database operation into thousands — fine in testing, painful on a real dataset.
- Do custom modules need their own access rules?
- Yes. A new model with no rules is either invisible or open depending on configuration, and neither is what you meant. Defining access and record rules alongside the model is part of building it, not a hardening step afterwards.
- Do you work with businesses across County Londonderry?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout Northern Ireland, including Derry and the surrounding County Londonderry area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Derry businesses do you usually work with?
- Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west. Beyond that we work across Manufacturing, Healthcare, Higher Education, Digital and Tourism.
- Do you cover the areas around Derry?
- Yes — we work throughout Northern Ireland, including Belfast, Lisburn. Derry is an urban area of roughly 85,000+, and we take on work across the wider County Londonderry region rather than the city boundary alone.
Talk to us about Odoo Development in Derry
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise